Simcom SIM5360A GSM/WCDMA Module User Manual SIM5360A Rev 1

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SIM5360A_User_Manual_V1.03
Document Title
SIM5360A User Manual
Version
1.03
Date
2014-07-03
Status
Release
Document Control ID
SIM5360A_User_Manual_V1.03
Smart Machine Smart Decision
Compliance Information
FCC Compliance Statement: This device complies with Part 15 of the FCC Rules . Operation is subject to
the following two conditions: 1. This device may not cause harmful interference, and 2. This device must
accept any interference received, including interference that may cause undesired operation. This device
must accept any interference received, including interference that may cause undesired operation. Product
that is a radio transmitter is labeled with FCC ID.
FCC Caution
(1)Exposure to Radio Frequency Radiation. This equipment must be installed and operated in accordance
with provided instructions and the antenna(s) used for this transmitter must be installed to provide a
separation distance of at least 20 cm from all persons and must not be collocated or operating in
conjunction with any other antenna or transmitter. End-users and installers must be provided with antenna
installation instructions and transmitter operating conditions for satisfying RF exposure compliance.
(2) Any changes or modifications not expressly approved by the grantee of this device could void the
user's authority to operate the equipment.
(3) This Transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
(4) Changes or modifications to this unit not expressly approved by the party responsible for compliance
could void the user authority to operate the equipment.
(5) the modules FCC ID is not visible when installed in the host, or
(6) if the host is marketed so that end users do not have straight forward commonly used methods for
access to remove the module so that the FCC ID of the module is visible; then an additional permanent
label referring to the enclosed module: Contains Transmitter Module FCC ID: UDV-SIM5360A or
Contains FCC ID: UDV-SIM5360A must be used.
IC Notice
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the
following two conditions: this device may not cause interference, and this device must accept any
interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes:
l'appareil ne doit pas produire de
brouillage, et l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
General Notes
SIMCom offers this information as a service to its customers, to support application and engineering
efforts that use the products designed by SIMCom. The information provided is based upon requirements
specifically provided to SIMCom by the customers. SIMCom has not undertaken any independent search
for additional relevant information, including any information that may be in the customer’s possession.
Furthermore, system validation of this product designed by SIMCom within a larger electronic system
remains the responsibility of the customer or the customer’s system integrator. All specifications supplied
herein are subject to change.
Smart Machine Smart Decision
Copyright
This document contains proprietary technical information which is the property of SIMCom Limited,
copying of this document and giving it to others and the using or communication of the contents thereof,
are forbidden without express authority. Offenders are liable to the payment of damages. All rights
reserved in the event of grant of a patent or the registration of a utility model or design. All specification
supplied herein are subject to change without notice at any time.
Copyright © Shanghai SIMCom Wireless Solutions Ltd. 2014
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Contents
Revision History ......................................................................................................................................... 10
1 Introduction ............................................................................................................................................. 11
1.1 Product Outline ................................................................................................................................... 11
1.2 Hardware Interface Overview ............................................................................................................. 11
1.3 Hardware Diagram .............................................................................................................................. 12
1.4 Functional Overview ........................................................................................................................... 12
2 Package Information ............................................................................................................................... 13
2.1 Pin Configuration ................................................................................................................................ 13
2.2 Pin description .................................................................................................................................... 16
2.3 Package Dimensions ........................................................................................................................... 19
2.4 Footprint Recommendation................................................................................................................. 21
3 Application Interface Specification ........................................................................................................ 21
3.1 Power Supply ...................................................................................................................................... 21
3.1.1 Power Supply Pin ......................................................................................................................... 22
3.1.2 Design Guide ................................................................................................................................ 22
3.1.3 RTC Backup ................................................................................................................................. 24
3.2 Power on/off Time Sequence .............................................................................................................. 26
3.2.1 Power on Sequence ....................................................................................................................... 26
3.2.2 Power off Sequence ...................................................................................................................... 27
3.3 UART Interface ................................................................................................................................... 28
3.3.1 Pin Description ............................................................................................................................. 30
3.3.2 Application Guide ......................................................................................................................... 30
3.4 SD/MMC Interface ............................................................................................................................. 32
3.4.1 Pin Description ............................................................................................................................. 32
3.4.2 Design guide ................................................................................................................................. 33
3.5 USIM Interface ................................................................................................................................... 33
3.5.1 Pin description .............................................................................................................................. 33
3.5.2 Application Guide ......................................................................................................................... 34
3.5.3 Recommend Components ............................................................................................................. 35
3.6 I2C Interface ....................................................................................................................................... 36
3.6.1 Pin Description ............................................................................................................................. 37
3.6.2 Signal Description ........................................................................................................................ 37
3.6.3 Design Guide ................................................................................................................................ 37
3.7 Keypad Interface ................................................................................................................................. 37
3.7.1 Pin Description ............................................................................................................................. 37
3.7.2 Application Guide ......................................................................................................................... 38
3.8 USB Interface...................................................................................................................................... 39
3.8.1 Application Guide ......................................................................................................................... 39
3.9 SPI Interface........................................................................................................................................ 40
3.9.1 Pin Description ............................................................................................................................. 40
3.10 GPIO Interface .................................................................................................................................. 40
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3.10.1 Pin Description ........................................................................................................................... 41
3.10.2 Application Guide ....................................................................................................................... 42
3.11 PCM Interface ................................................................................................................................... 43
3.11.1 Pin Description ........................................................................................................................... 44
3.11.2 Signal Description....................................................................................................................... 44
3.11.3 Application Guide ....................................................................................................................... 47
3.12 GNSS (GPS and GLONASS) ........................................................................................................... 48
3.12.1 Technical specification ............................................................................................................... 48
3.12.2 Operate Mode ............................................................................................................................. 49
3.12.3 Application Guide ....................................................................................................................... 49
3.13 Multi-functional interface ................................................................................................................. 51
3.13.1 Sink Current Source.................................................................................................................... 51
3.13.2 Reset Function ............................................................................................................................ 52
3.13.3 ADC ............................................................................................................................................ 52
3.13.4 LDO ............................................................................................................................................ 53
4 RF Specification ....................................................................................................................................... 54
4.1 RF Specification.................................................................................................................................. 54
4.2 Operating Specification....................................................................................................................... 54
4.3 Antenna Design Guide ........................................................................................................................ 55
Contact us: .................................................................................................................................................. 57
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Table Index
Table 2 : General Feature .......................................................................................................................... 12
Figure 2: Pin viewTable 3 : Pin definition ................................................................................................ 15
Table 4 : Pin description ............................................................................................................................ 16
Table 5 : Pin description ............................................................................................................................ 22
Table 6 : Recommended zener diode models............................................................................................ 23
Table 7 : Power on timing .......................................................................................................................... 27
Table 8 : Power off timing .......................................................................................................................... 28
Table 9 : Pin description ............................................................................................................................ 30
Table 10 : Logic level .................................................................................................................................. 30
Table 11 : Pin description ........................................................................................................................... 32
Table 12 : Electronic characteristic........................................................................................................... 33
Table 16 : Pin description .......................................................................................................................... 33
Table 17 : Electronic characteristic........................................................................................................... 34
Table 18 : Pin description .......................................................................................................................... 37
Table 19 : Pin description .......................................................................................................................... 37
Table 20 : GPIO configuration .................................................................................................................. 38
Table 21 : Electronic characteristic........................................................................................................... 39
Table 22 : Pin description ......................................................................................................................... 40
Table 23 : Electronic characteristic ......................................................................................................... 40
Table 24 : Pin description .......................................................................................................................... 41
Table 25 : Electronic characteristic ......................................................................................................... 41
Table 26 : LED status ................................................................................................................................. 42
Table 27 : Control status ............................................................................................................................ 43
Table 28 : Pin description .......................................................................................................................... 44
Table 29 : Electronic characteristic ......................................................................................................... 44
Table 30 : Timing parameters.................................................................................................................... 45
Table 31 : Timing parameters.................................................................................................................... 47
Table 32 : Electronic characteristic........................................................................................................... 51
Table 33 : Electronic Characteristics ........................................................................................................ 52
Table 34 : Electronic characteristic........................................................................................................... 53
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Table 35 : Conducted transmission power .............................................................................................. 54
Table 36 : Operating frequencies .............................................................................................................. 54
Table 37 : Conducted receive sensitivity ................................................................................................... 54
Table 38 : GPRS/EDGE data throughout................................................................................................. 54
Table 39 : HSDPA throughout ................................................................................................................... 55
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Figure Index
Figure 1 : SIM5360A functional architecture .......................................................................................... 12
Figure 2 : Pin viewTable 3: Pin definition ................................................................................................ 14
Figure 3 : Top dimensions (Unit: mm) .................................................................................................... 19
Figure 4 : Side dimensions (Unit: mm) ................................................................................................... 20
Figure 5 : Bottom dimensions (Unit: mm) .............................................................................................. 20
Figure 6 : Footprint recommendation (Unit: mm) ................................................................................. 21
Figure 7 : VBAT voltage drop during burst emission (GSM/GPRS) ..................................................... 22
Figure 8 : VBAT input application circuit ................................................................................................ 23
Figure 9 : Reference circuit of the LDO power supply ........................................................................... 23
Figure 10 : Reference circuit of the DCDC power supply....................................................................... 24
Figure 11 : RTC supply from capacitor .................................................................................................... 25
Figure 12 : RTC supply from non-chargeable battery ............................................................................ 25
Figure 13 : RTC supply from rechargeable battery ................................................................................ 25
Figure 15 : Power on Timing Sequence .................................................................................................... 26
Figure 16 : Power off timing sequence ...................................................................................................... 28
Figure 17 : UART1 Full modem ................................................................................................................ 29
Figure 18 : Null modem (UART1 and UART2) ....................................................................................... 29
Figure 19 : RI behaviour in NULL Modem.............................................................................................. 31
Figure 20 : RI behaviour in FULL Modem .............................................................................................. 31
Figure 21 : Reference circuit of level shift ................................................................................................ 32
Figure 22 : SD interface circuit ................................................................................................................. 33
Figure 23 : USIM interface reference circuit ........................................................................................... 35
Figure 24 : Amphenol SIM card socket .................................................................................................... 36
Figure 25 : Reference circuit ..................................................................................................................... 38
Figure 26 : USB interface........................................................................................................................... 39
Figure 27 : Application circuit ................................................................................................................... 42
Figure 28 : Flight mode switch .................................................................................................................. 43
Figure 29 : Synchrony timing .................................................................................................................. 44
Figure 30 : EXT CODEC to MODULE timing........................................................................................ 45
Figure 31 : MODULE to EXT CODEC timing ........................................................................................ 45
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Figure 32 : Synchrony timing .................................................................................................................... 46
Figure 33 : EXT CODEC to MODULE timing........................................................................................ 46
Figure 34 : MODULE to EXT CODEC timing ........................................................................................ 47
Figure 35 : Reference Circuit of PCM Application with Audio Codec .................................................. 48
Figure 36 : Active antenna circuit ............................................................................................................. 50
Figure 37 ：Passive antenna circuit (Default) ......................................................................................... 50
Figure 38 : Current drive ........................................................................................................................... 51
Figure 39 : Reset circuit ............................................................................................................................. 52
Figure 40 : Antenna matching circuit (MAIN_ANT) .............................................................................. 56
Figure 41 : Antenna matching circuit (DIV_ANT) .................................................................................. 56
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Revision History
Data
Version
Description of change
Author
2014-02-28
1.01
Original
Libing
2014-04-18
1.02
Add UART2 description
Libing
2014-07-03
1.03
Modify pin names of SIM5360A
Libing
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1 Introduction
This document describes electronic specifications, RF specifications, function interface, mechanical
characteristic and testing conclusions of the SIMCom SIM5360A module. With the help of this document
and other SIM5360A software application notes, user guides, users can quickly understand and use
SIM5360A module to design and develop applications quickly.
1.1
Product Outline
Designed for global market, SIM5360A is a quad-band GSM/GPRS/EDGE and dual-band UMTS /HSPA+
that works on frequencies of GSM 850MHz, EGSM 900 MHz, DCS 1800 MHz, PCS 1900MHz and
WCDMA 1900/850 MHz.
With a tiny configuration of 30*30*2.9 mm and integrated functions, SIM5360A can meet almost any
space requirement in users’ application, such as Smart phone, PDA phone, industrial handhelds,
machine-to-machine, vehicle applications, etc..
There are 82 pins on SIM5360, which provide most application interfaces for customers’ board.
1.2
Hardware Interface Overview
Sub-interfaces are described in detail in the next chapter, which includes:
● Power Supply
● USB Interface
● UART Interface
● SD card Interfaces
● SIM Interface
● GPIO
● ADC
● LDO Power Output
● Current Sink Source
● PCM Interface
● Keypad Interface
● SPI Interface
● RTC
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I2C Interface
●
1.3
Hardware Diagram
The global architecture of the SIM5360A Embedded module is described in the figure below.
GNSS Antenna
Main Antenna
GSM/WCDMA
RF Frontend
DIV Antenna
DDR
GNSS
RF
WCDMA
RF
Frontend
NAND
Flash
SMT Interface
Qualcomm
Chip
Processor
Transceiver
GSM PA
Vbat*
WCDMA
PA
Power
Management
SIM
UART
MMC/SD
I2C
PCM
USB
Interrupt
GPIOs
ADC
Status LED
LDO
SPI
Keypad(Multiplex with GPIOs)
Sink Current Source
RTC
Power On
Reset
Vbat*
Vbat*
XO
19.2MHz
XO
32.768kHz
Figure 1: SIM5360A functional architecture
1.4
Functional Overview
Table 1: General Feature
Feature
Implementation
Power supply
Single supply voltage 3.4～4.2V
●
Dual-mode UMTS/HSPA+/EDGE/GPRS operation
GPRS Class B, multislot class 12 operation, Supports coding scheme:
CS1-4
EDGE multislot class 12 operation, Supports coding schemes
MSC1-9
UMTS R99 data rates-384 kbps DL/UL
Category 6 HSDPA -14.4 Mbps HSUPA-5.76 Mbps
CSD feature: 9.6, 14.4, 64 kbps UL/DL
●
●
●
●
●
GNSS engine (GPS and GLONASS)
Protocol: NMEA
Mobile-assisted mode
Mobile-based mode
Standalone mode
●
●
Transmission data
●
●
●
GNSS
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MT, MO, CB, Text and PDU mode
● SMS storage: SIM card or ME(default)
● Support transmission of SMS alternatively over CSD or GPRS.
User can choose preferred mode.
●
SMS
SIM interface
Audio features(optional)
UART interface
Support identity card: 1.8V, 3V.
Speech codec modes:
● Half Rate (ETS 06.20)
● Full Rate (ETS 06.10)
● Enhanced Full Rate (ETS 06.50 / 06.60 / 06.80)
● AMR (WCDMA)
● AMR+QCP (GSM)
● A5/1, A5/2, and A5/3 ciphering
Support full mode or null mode
● Support AT command
●
USB
Support USB2.0 Slave mode
Rx-diversity
Support UMTS Rx-diversity.
Phonebook management
Support phonebook types: SM, FD, LD, RC, ON, MC.
Support SAT class 3, GSM 11.14 Release 98
Support USAT
SIM application toolkit
Real Time Clock
Physical characteristics
Firmware upgrade
PCM
Temperature range
Support RTC
Size:30*30*2.9mm
Weight:5.7 g
Firmware upgrade over USB interface
Multiplex on GPIOs.
Used for analog audio function with external codec.
Support long frame sync and short frame sync.
Support 8-bit A-law, μ-law and 16-bit linear data formats.
Support master and slave mode, but must be the master in long frame
sync.
Normal operation temperature: -10°C to +60°C
● Storage temperature -45°C to +90°C
●
2 Package Information
2.1
Pin Configuration
All hardware interfaces which connect SIM5360A to customers’ application platform are through 82 pins
pads (Metal half hole). Figure 2 is SIM5360A outline diagram.
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Figure 2: Pin view
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Table 2: Pin definition
Pin No.
Define
Pin No.
Define
GND
GND
POWERKEY
RESET
GND
SPI_CLK
UART2_RXD / SPI_MISO
UART2_TXD / SPI_MOSI
SPI_CS
10
GND
11
USB_VBUS
12
USB_DN
13
USB_DP
14
GND
15
VDD_1V8
16
RESERVED
17
USIM_DATA
18
USIM_RST
19
USIM_CLK
20
USIM_VDD
21
SD_CMD
22
SD_DATA0
23
SD_DATA1
24
SD_DATA2
25
SD_DATA3
26
SD_CLK
27
KBC1
28
KBC0
29
KBR0
30
KBR2
31
KBC2
32
KBC3
33
KBR1
34
KBR4
35
KBR3
36
KBC4
37
GND
38
VBAT
39
VBAT
40
GND
41
GND
42
VRTC
43
GND
44
VDD_EXT
45
ISINK
46
ADC2
47
ADC1
48
GPIO44
49
GPIO40
50
GPIO43
51
NETLIGHT/GPIO1
52
GPIO41
53
GPIO42
54
GPIO4
55
SCL
56
SDA
57
GND
58
GND
59
MAIN_ANT
60
GND
61
GND
62
VBAT
63
VBAT
64
GND
65
GND
66
RTS
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67
CTS
68
RXD
69
RI
70
DCD
71
TXD
72
DTR
73
PCM_OUT
74
PCM_IN
75
PCM_SYNC
76
PCM_CLK
77
GND
78
GND
79
GNSS_ANT
80
GND
81
GND
82
DIV_ANT
2.2
Pin description
IO Parameters Definition
Pin Type
Description
PI
Power input
PO
Power output
IO
Bidirectional input / output
DI
Digital input
DO
Digital output
AI
Analog input
Table 3: Pin description
Pin name
Pin No.
I/O
Description
Comment
VBAT
38,39,
62,63
PI
Power supply voltage
VRTC
42
I/O
Power supply for RTC
Power Supply
VDD_EXT
44
PO
VDD_1V8
15
PO
GND
1,2,5,10
,14,37,4
0,41,43,
57,58,6
0,61,64,
65,77,7
8,80,81
LDO power output for SD card
circuit or other external circuit.
This LDO output voltage can be
changed by the AT command
“AT+CVAUXV”.
The 1.8V SMPS output for
external circuit, such as level shift
circuit.
If it is unused, keep open.
Ground
Power on/off
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DI
POWERKEY should be pulled
low at least 180ms to power on or
500ms to power off the module.
SD_CMD
21
I/O
SDIO command
SD_DATA0
22
I/O
SDIO data
SD_DATA1
23
I/O
SDIO data
SD_DATA2
24
I/O
SDIO data
SD_DATA3
25
I/O
SDIO data
SD_CLK
26
DO
SDIO clock
USIM_DATA
17
I/O
SIM Data Output/Input
USIM_RST
USIM_CLK
18
19
DO
DO
SIM Reset
SIM Clock
USIM_VDD
20
PO
Voltage Supply for SIM card
Support 1.8V or 3V SIM card
DO
SPI clock
DI
Receive data of UART2 / SPI
(master only) master in/slave out
data
DO
Transmit data of UART2 / SPI
(master only) master out/slave in
data
DO
SPI chip-select
USB_VBUS
11
PI
USB power supply input
USB_DN
12
I/O
USB_DP
13
I/O
RTS
66
DO
Request to send
CTS
67
DI
Clear to Send
RXD
68
DI
Receive Data
RI
69
DO
Ring Indicator
DCD
70
DO
Carrier detects
TXD
DTR
71
72
DO
DI
Transmit Data
DTE get ready
POWERKEY
SD interface
If it is unused, keep open.
USIM interface
All signals of SIM
interface
should
be
protected
against
ESD/EMC.
SPI/UART2 interface
SPI_CLK
UART2_RXD
/SPI_MISO
UART2_TXD
SPI_MOSI
SPI_CS
If it is unused, keep open.
USB
Minus (-) line of the differential,
bi-directional USB signal to/from
the
Plus (+) line of the differential,
bi-directional USB signal to/from
the
They are compliant with
the USB 2.0 specification.
If it is unused, keep open.
UART1 interface
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RXD has been pulled
down with a 12kR resistor
to ground in the module.
If it is unused, keep open.
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I2C interface
SCL
55
DO
I2C clock output
SDA
56
I/O
I2C data
KBR0
29
DO
Bit 0 drive to the pad matrix
KBR1
33
DO
Bit 1 drive to the pad matrix
KBR2
30
DO
Bit 2 drive to the pad matrix
KBR3
35
DO
Bit 3 drive to the pad matrix
KBR4
34
DO
Bit 4 drive to the pad matrix
KBC0
28
DI
Bit 0 for sensing key press on pad
matrix
KBC1
27
DI
Bit 1 for sensing key press on pad
matrix
KBC2
31
DI
Bit 2 for sensing key press on pad
matrix
KBC3
32
DI
Bit 3 for sensing key press on pad
matrix
KBC4
36
DI
Bit 4 for sensing key press on pad
matrix
PCM_OUT/GPIO5
73
DO
PCM_IN/GPIO0
74
DI
None pulled up resistors in
the module. Pulled up with
a 2.2kR resistor to 1.8V
externally.
If it is unused, keep open.
Keypad interface
All Keypad pins can be
configured as GPIOs.
If it is unused, keep open.
PCM interface
PCM_SYNC/GPIO
75
DO
PCM_CLK/GPIO3
76
DO
NETLIGHT/GPIO1
51
DO
GPIO4
54
DI
GPIO40
49
DO
PCM data output. It also can be
multiplexed as GPIO5.
PCM data input. It also can be
multiplexed as GPIO0 with
module wake/interrupt.
PCM data frame sync signal. It
also can be multiplexed as
GPIO2.
PCM data bit clock. It also can be
multiplexed as GPIO3.
If it is unused, keep open.
Output PIN as LED control for
network status.
Input PIN as RF operating
control.
Output PIN as operating status
indicating of module.
General input/output PIN. It can
be used as wake/interrupt signal
to host from module
General input/output PIN. It can
be used as wake/interrupt signal
to module from host.
If it is unused, keep open.
GPIOs
GPIO41
52
DO
GPIO43
50
DI
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GPIO44
48
I/O
General input/output PIN.
GPIO42
53
I/O
General input/output PIN.
RF interface
MAIN _ANT
59
MAIN ANT soldering pad
GNSS_ANT
79
AI
GNSS ANT soldering pad
DIV_ANT
82
AI
Diversity ANT soldering pad
RESET
DI
System reset in, active low.
ISINK
45
DI
Current
source
of
ground-referenced current sink
ADC1
47
AI
Analog Digital Converter Input
ADC2
46
AI
Analog Digital Converter Input
RESERVED
16
Other interface
2.3
Refer to 3.13.1
Refer to 3.13.3
Reserved
Package Dimensions
The following figure shows mechanical dimensions of SIM5360.
Figure 3: Top dimensions (Unit: mm)
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Figure 4: Side dimensions (Unit: mm)
Figure 5: Bottom dimensions (Unit: mm)
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2.4
Footprint Recommendation
Figure 6: Footprint recommendation (Unit: mm)
3 Application Interface Specification
3.1
Power Supply
The power supply pins of SIM5360A include four VBAT pins (pin 62&63, pin 38&39). VBAT directly
supplies the power to RF circuit and baseband circuit. All four VBAT pins of SIM5360A must be used
together. VBAT directly supplies the power to RF PA and baseband system. For the VBAT, the ripple due
to GSM/GPRS emission burst (every 4.615ms）may cause voltage drop, and the current consumption rises
typically to peak of 2A. So the power supply must be able to provide sufficient current up to more than 2A.
The following figure is the VBAT voltage ripple wave at the maximum power transmit phase.
The test condition: VBAT =4.0V, VBAT maximum output current =2A, CA=100 µF tantalum capacitor
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(ESR=0.7Ω) and CB=1µF(Please refer to Figure 8—Application circuit).
Figure 7: VBAT voltage drop during burst emission (GSM/GPRS)
3.1.1
Power Supply Pin
Two VBAT pins are dedicated to connect the supply voltage.
Table 4: Pin description
Pin type
Pin name
Min
Typ
Max
Unit
POWER
VBAT
3.4
3.8
4.2
Note:
1. When the module is power off, users must pay attention to the issue about current leakage. Refer to
Chapter 3.10.2.
3.1.2
Design Guide
Make sure that the input voltage at the VBAT pin will never drop below 3.3V even during a transmit burst
when the current consumption rises up to more than 2A. If the power voltage drops below 3.3V, the
module may be shut down automatically. Using large tantalum capacitors (above 100uF) will be the best
way to reduce the voltage drops. If the power current cannot support up to 2A, users must introduce larger
capacitor (typical 1000uF) to storage electric power, especially GPRS multiple time slots emission.
For the consideration of RF performance and system stability, some multi-layer ceramic chip (MLCC)
capacitors (0.1/1uF) need to be used for EMC because of their low ESR in high frequencies. Note that
capacitors should be put beside VBAT pins as close as possible. Also User should minimize the PCB trace
impedance from the power supply to the VBAT pins through widening the trace to 80 mil or more on the
board. The following figure is the recommended circuit.
In addition, in order to get a stable power source, it is suggested to use a zener diode of which reverse
zener voltage is 5.1V and dissipation power is more than 500mW.
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Table 5: Recommended zener diode models
No.
Manufacturer
Part Number
Power
Package
On semi
MMSZ5231BT1G
500mW
SOD123
Prisemi
PZ3D4V2H
500mW
SOD323
Prisemi
PZ5D4V2H
500mW
SOD523
Vishay
MMSZ4689-V
500mW
SOD123
Crownpo
CDZ55C5V1SM
500mW
0805
Figure 8: VBAT input application circuit
There are three sections about how to design and optimize users’ power systems.
Power supply circuit
We recommend DCDC or LDO is used for the power supply of the module, make sure that the peak
current of power components can rise up to more than 2A. The following figure is the reference design of
+5V input power supply. The designed output for the power supply is 4.1V, here a linear regulator can be
used.
Figure 9: Reference circuit of the LDO power supply
If there is a big difference between the input voltage and the desired output (VBAT), a switching converter
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power will be preferable because of its better efficiency, especially at the high current situation. The
following figure is the reference circuit. Note that DCDC may deprave RF performance because of ripple
current intrinsically.
Figure 10: Reference circuit of the DCDC power supply
Voltage monitor
To monitor the power supply voltage, user can use the AT command “AT+CBC”, this command has two
parameters: the battery status and the voltage value (mV). It will return the capacity percentage and actual
value of battery (at the VBAT pin). The voltage is continuously measured at intervals, whenever the
measured battery voltage is lower than a specific value set by the AT command “AT+CVALARM”. For
example, if the voltage value is set to be 3.4V, the following URC will be presented: “warning! voltage is
low: 3.3v”.
If the voltage is lower than a specific value which is set by the AT command “AT+CPMVT”, the module
will be powered off automatically and AT commands cannot be executed any more.
Note: Under-voltage warning function is disabled by default, user can enable it by the AT command
“AT+CVALARM”. Please refer to Document [1].
3.1.3
RTC Backup
The module uses RTC (Real Time Clock) to update and maintain inherent time and keeps system alive at
no power supply status. The RTC power supply of module can be provided by an external capacitor or a
battery (non-chargeable or rechargeable) through the VRTC. The following figures show various reference
circuits for RTC back up. The discharge current is less than 10uA.

External capacitor backup
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Figure 11: RTC supply from capacitor

Non-chargeable battery backup
Figure 12: RTC supply from non-chargeable battery

Rechargeable battery backup
Figure 13: RTC supply from rechargeable battery
Coin-type rechargeable battery is recommended, such as ML414H-IV01E form Seiko can be used.
Note: The VRTC can be disabled, jus disconnect it in application circuit.
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3.2
3.2.1
Power on/off Time Sequence
Power on Sequence
SIM5360A can be powered on by POWERKEY pin, which starts normal operating mode.
POWERKEY pin is pulled up with a 200k ohm resistor to 1.8V in module. User can power on the
SIM5360A by pulling the POWERKEY pin down for a short time. The power-on scenarios are illustrated
in the following figures.
Figure 14: Power on Timing Sequence
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Table 6: Power on timing
Symbol
Time value
Parameter
Unit
Min.
Typ.
Max.
500
ms
0.5
Ton
The time to pull POWERKEY down to power on
180
TpD+
The time to indicate connecting with the network
Tpw+
The time to indicate the module is powered on
completely
Tuart
The time to enable UART
Tusb
The time to enable USB
10
Note: Module could be automatically power on by connecting Power ON pin to Low level directly.
Before designing, please refer to Document [27] for more detail.
3.2.2
Power off Sequence
The following methods can be used to power down SIM5360. These procedures will make module
disconnect from the network and allow the software to enter a safe state, and then save data before
completely powering the module off.
Method 1: Power off SIM5360A by pulling the POWERKEY pin down
● Method 2: Power off SIM5360A by AT command
●
User can power off the SIM5360A by pulling POWERKEY down for a specific time. The power off
scenario is illustrated in the following figure.
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Figure 15: Power off timing sequence
Table 7: Power off timing
Symbol
Time value
Parameter
Min.
Typ.
Max.
Unit
0.5
Toff
The time pulling POWERKEY down to power off
TpD-
The time to indicate disconnecting from the network
Tpw-
The time to indicate the module power off completely
Tuart
The time to disable UART
Tusb
The time to disable USB
Trestart
The time to power on again after Tpw-
User can also use the AT command “AT+CPOF” to power down the module. After that, the AT commands
cannot be executed any longer. The module enters the POWER DOWN mode, only the RTC is still active.
For details, refer to Document [1].
3.3
UART Interface
SIM5360A provides two UARTs (universal asynchronous serial transmission) port. UART1 consists of a
flexible 7-wire serial interface. UART2 consists of 2-wire serial interface. The module is as the DCE (Data
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Communication Equipment) and the client PC is as the DTE (Data Terminal Equipment). AT commands
are entered and serial communication is performed through UART interface.
In order to prevent the UART signals of the module damaged due to voltage spikes or ESD, series resistors
can be used on UART signals.
The application circuit is in the following figures.
Figure 16: UART1 Full modem
Figure 17: Null modem (UART1 and UART2)
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3.3.1
Pin Description
Table 8: Pin description
Pin type
UART1
UART2
Pin name
Pin No.
I/O
Default Status
RXD
68
Pull-Down
TXD
71
Pull-Up
RTS
66
CTS
67
Pull-Up
DTR
72
Pull-Up
DCD
70
RI
69
UART2_RXD
Pull-Down
UART2_TXD
Pull-Up
More pin information refers to chapter 2.2.
Table 9: Logic level
Symbol
Parameter
Min
Typ
Max
Unit
VIH
High-level input voltage
1.26
1.8
2.1
VIL
Low-level input voltage
-0.3
0.63
VOH
High-level output voltage
1.35
1.8
1.8
VOL
Low-level output voltage
0.45
3.3.2
Application Guide
If UART port is used in Null Modem, the pin “RI” can be used as an interrupt signal to HOST. Normally it
will keep high logic level until certain condition such as receiving SMS, voice call (CSD, video) or URC
reporting, then “RI” will change to low logic level to inform the master (client PC). It will stay low until
the master clears the interrupt event with AT command.
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Figure 18: RI behaviour in NULL Modem
If Full Modem is used to establish communication between devices, the pin “RI” is another operation
status. Initially it keeps high, when a voice call or CSD call comes, the pin “RI” will change to low for
about 5900ms, then it will return to high level for 100ms. It will repeat this procedure until this call is
answered or hung up.
Figure 19: RI behaviour in FULL Modem
The SIM5360A UART is 1.8V interface. A level shifter should be used if user’s application is equipped
with a 3.3V UART interface. The level shifter TXB0108RGYR provided by Texas Instruments is
recommended. The reference design of the TXB0108RGYR is in the following figures.
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Figure 20: Reference circuit of level shift
To comply with RS-232-C protocol, the RS-232-C level shifter chip should be used to connect SIM5360A
to the RS-232-C interface. In this connection, the TTL level and RS-232-C level are converted mutually.
SIMCom recommends that user uses the SP3238ECA chip with a full modem. For more information
please refers to the RS-232-C chip datasheet.
Note: SIM5360A supports the baud rate: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600,
115200, 230400, 460800, 921600, 3200000, 3686400, 4000000bps. Default rate is 115200bps.
3.4
SD/MMC Interface
SIM5360A provides one 4-bit SD/MMC interface. Its operation voltage is 2.85V, with clock rates up to 52
MHz. It supports 1-bit SD/MMC or 4-bit SD data transmission mode. Though the same hardware
controller is used, the initialization procession for SD or MMC cards is different. SIM5360A will detect
which card is inserted automatically.
Note: Interface with SD/MMC memory cards up to 32GB.
3.4.1
Pin Description
Table 10: Pin description
Pin name
Pin No.
Function
SD_DATA0
22
SD/MMC card data0
SD_DATA1
23
SD card data1
SD_DATA2
24
SD card data2
SD_DATA3
25
SD card data3
SD_CLK
26
SD card clock
SD_CMD
21
SD card command
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VDD_EXT
44
SD card power
Table 11: Electronic characteristic
Symbol
Parameter
Min
Typ
Max
Unit
VDD_EXT
LDO power output
2.71
2.85
2.99
VIH
High-level input voltage
0.65·VDD_EXT
VDD_EXT+0.3
VIL
Low-level input voltage
-0.3
0.3·VDD_EXT
VOH
High-level output voltage
2.71
2.85
2.99
VOL
Low-level output voltage
0.45
3.4.2
Design guide
The module provides a LDO named VDD_EXT for SD card power supply. The LDO is 2.85V by default,
capable of 300mA. Data lines should be pulled up to VDD_EXT by 10K resistors. ESD/EMI components
should be arranged beside SD card socket. Refer to the following application circuit.
Figure 21: SD interface circuit
3.5
USIM Interface
The USIM provides the required subscription verification information to allow the mobile equipment to
attach to a GSM or UMTS network. Both 1.8V and 3.0V SIM Cards are supported.
3.5.1
Pin description
Table 12: Pin description
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Pin name
Pin
Description
USIM_CLK
19
USIM Card Clock
USIM_RST
18
USIM_DATA
17
USIM_VDD
20
USIM Card Reset
USIM Card data I/O, which has been pulled up with a 22kR resistor to
USIM_VDD in module. Do not pull up or pull down in users’
application circuit.
USIM Card Power output depends automatically on USIM mode，one
is 3.0V±10%, another is 1.8V±10%. Current is less than 50mA.
Table 13: Electronic characteristic
3.0V mode
Symbol
Parameter
USIM_VD
Min
Typ
Max
LDO power
output
2.71
2.85
3.05
VIH
High-level
input voltage
0.65·USI
VIL
Low-level
input voltage
VOH
High-level
output voltage
VOL
Low-level
output voltage
3.5.2
M_VDD
1.8V mode
Min
Ty
Max
1.7
1.8
1.9
USIM_V
0.65·USI
DD +0.3
M_VDD
0.3·USI
-0.3
2.71
2.85
3.05
0.45
M_VDD
USIM_V
DD +0.3
0.3·USI
Unit
-0.3
1.7
1.8
1.9
0.45
M_VDD
Application Guide
It is recommended to use an ESD protection component such as ST (www.st.com ) ESDA6V1W5 or ON
SEMI (www.onsemi.com ) SMF05C. Note that the SIM peripheral circuit should be close to the SIM card
socket. The reference circuit of the 6-pin SIM card holder is illustrated in the following figure.
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Figure 22: USIM interface reference circuit
Note: USIM_DATA has been pulled up with a 15kohm resistor to USIM_VDD in module. A 220nF shut
capacitor on USIM_VDD is used to reduce interference. Use AT Commands to get information in USIM
card. For more detail, please refer to document [1].
3.5.3
Recommend Components
For 6 pins USIM socket, SIMCom recommend to use Amphenol C707 10M006 512 2. User can visit
http://www.amphenol.com for more information about the holder.
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Figure 23: Amphenol SIM card socket
Table 19: Amphenol USIM socket pin description
3.6
Pin
Signal
C1
USIM_VDD
C2
USIM_RST
C3
C5
C6
C7
USIM_CLK
GND
VPP
USIM_DATA
Description
SIM Card Power supply, it can identify automatically the
SIM Card power mode，one is 3.0V±10%, another is
1.8V±10%.
SIM Card Reset.
SIM Card Clock.
Connect to GND.
SIM Card data I/O.
I2C Interface
I2C is used to communicate with peripheral equipments and can be operated as either a transmitter or
receiver, depending on the device function. Use AT Commands “AT+CRIIC and AT+CWIIC” to read/write
register values of related peripheral equipments connected with I2C interface. Its operation voltage is
1.8V.
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3.6.1
Pin Description
Table 14: Pin description
Pin name
SDA
Pin No.
56
Function
Serial interface data input and output
SCL
55
Serial interface clock input
3.6.2
Signal Description
Both SDA and SCL are bidirectional lines, connected to a positive supply via a pull-up resistor
respectively. When the bus is free, both lines are high.
3.6.3
Design Guide
For SIM5360, the data on the I2C bus can be transferred at rates up to 400kbps. The number of peripheral
devices connected to the bus is solely dependent on the bus capacitance limit of 400pF. Note that PCB
traces length and bending are in users’ control to minimize load capacitance.
Note：SDA and SCL have none pulled up resistors in module. So there is need to pull them up in users’
application circuit.
3.7
Keypad Interface
SIM5360A module provides a keypad interface that supports five sense lines, or columns, and five keypad
rows. The interface generates an interrupt when any key is pressed. Its operation voltage is 1.8V.
3.7.1
Pin Description
Table 15: Pin description
Pin name
Pin No.
KBC0
KBC1
KBC2
28
27
31
KBC3
32
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KBC4
KBR0
KBR1
KBR2
KBR3
KBR4
3.7.2
36
30
29
30
35
34
Driving pads
Application Guide
All keypad pins can be configured for GPIOs. These GPIOs also support interruption operation if used as
input pins. A typical circuit about the keypad (5*5 keypad matrix) is shown in the following figure.
KBC0
KBC1
KBC2
KBC3
KBC4
KBR0
KBR1
KBR2
KBR3
KBR4
Figure 24: Reference circuit
If these pins are configured for GPIOs, the sequence is listed in the following table.
Table 16: GPIO configuration
Keypad interface
GPIO No.
KBR4
GPIO6
KBR3
GPIO7
KBR2
GPIO8
KBR1
GPIO9
KBR0
GPIO10
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KBC4
GPIO11
KBC3
GPIO12
KBC2
GPIO13
KBC1
GPIO14
KBC0
GPIO15
Note: Refer to document [23] for detailed information of Keypad Application Note.
3.8
USB Interface
SIM5360A module contains a USB interface. This interface is compliant with the USB2.0 specification.
The USB2.0 specification requires hosts such as the computer to support all three USB speeds, namely
low-speed (1.5Mbps), full-speed (12Mbps) and high-speed (480Mbps). USB charging and USB-OTG is
not supported.
Table 17: Electronic characteristic
Pin name
USB_VBUS
11
USB_DP
13
USB_DN
12
3.8.1
Input voltage scope( V )
Pin No.
Min
Typ
5.0
Max
5.25
They are compliant with the USB 2.0 specification.
Application Guide
Currently SIM5360A supports the USB suspend and resume mechanism which can help to save power.
If no transaction is on USB bus, SIM5360A will enter suspend mode. When some events such as voice call
or receiving SMS happen, SIM5360A will resume normal mode automatically.
Figure 25: USB interface
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Because of high bit rate on USB bus, pay attention to influence of junction capacitance of ESD component
on USB data lines. Typically, the capacitance should be less than 4pF @1MHz.
It is recommended to use an ESD protection component such as ON SEMI (www.onsemi.com )
ESD9M5.0ST5G or ESD9L5.0ST5G.
Note：The SIM5360A has two kinds of interface (UART and USB) to connect to host CPU. USB
interface is mapped to five virtual ports: “SIMTECH HS-USB Modem 9000”, “SIMTECH HS-USB
NMEA 9000”, “SIMTECH HS-USB AT port 9000”, “SIMTECH HS-USB Diagnostics 9000” and
“SIMTECH Wireless HS-USB Ethernet Adapter 9000”.
3.9 SPI Interface
SPI interface of SIM5360A is master only. It provides a duplex, synchronous, serial communication link
with peripheral devices. Its operation voltage is 1.8V, with clock rates up to 26 MHz.
3.9.1
Pin Description
Table 18: Pin description
Pin name
Pin No.
Function
SPI_CS
SPI chip-select; not mandatory in a point-to-point connection
SPI_MISO
SPI master in/slave out data
SPI_CLK
SPI clock
SPI_MOSI
SPI master out/slave in data
Table 19: Electronic characteristic
Symbol
Parameter
Min
Typ
Max
Unit
VIH
High-level input voltage
1.26
1.8
2.1
VIL
Low-level input voltage
-0.3
0.63
VOH
High-level output voltage
1.35
1.8
1.8
VOL
Low-level output voltage
0.45
3.10 GPIO Interface
SIM5360A provides a limited number of GPIO pins. All GPIOs can be configured as inputs or outputs.
User can use AT Commands to read or write GPIOs status. Refer to ATC document for details.
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3.10.1 Pin Description
Table 20: Pin description
Pin name
Pin No.
I/O
Function
NETLIGHT/GPIO1
51
Output PIN as LED control for network status. If it is
unused, left open.
GPIO4
54
Input PIN as RF operating control.
H: Normal Mode L:Flight Mode
If it is unused, left open.
GPIO40
49
Output PIN as operating status indicating of module.
H: Power on
L: Power off
If it is unused, left open.
GPIO41
52
I/O
General input/output PIN. It can be used as wake/interrupt
signal to host from module If it is unused, left open.
GPIO42
53
I/O
General Purpose Input/Output Port.
GPIO43
50
I/O
General Purpose Input/Output Port. It can be used as
wake/interrupt signal to module from host. If it is unused, left
open.
GPIO44
48
I/O
General Purpose Input/Output Port
Note: If more GPIOs need to be used, users can configure GPIO on other multiple function interfaces,
such as PCM. Please refer to GPIO list.
Table 21: Electronic characteristic
Symbol
Parameter
Min
Typ
Max
Unit
VIH
High-level input voltage
1.26
1.8
2.1
VIL
Low-level input voltage
-0.3
0.63
VOH
High-level output voltage
1.35
1.8
1.8
VOL
Low-level output voltage
0.45
Note: The output driver current of GPIOs is 2mA.
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3.10.2 Application Guide
Network status
GPIO1 is used to control Network Status LED; application circuit is shown below.
Figure 26: Application circuit
Note: The value of resistor Rx depends on LED characteristic.
Table 22: LED status
LED Status
Always On
200ms ON, 200ms OFF
800ms ON, 800ms OFF
Module Status
Searching Network/Call Connect
Data Transmit
Registered network
Off
Power off / Sleep
Flight mode control
GPIO4 controls SIM5360A module to enter or exit the Flight mode. In Flight mode, SIM5360A closes RF
function to prevent interference with other equipments or minimize current consumption. Bidirectional
ESD protection component is suggested to add on GPIO4.
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Figure 27: Flight mode switch
Table 23: Control status
GPIO4 Status
Low Level
High Level
Module operation
Flight Mode: RF is closed.
Normal Mode: RF is working.
Note：1. For SIM5360, GPIO0, GPIO2, GPIO3 and GPIO5 have multiplex function, user can use them
as PCM interface to connect extend codec. Refer to section 3.11 and document [1] for details.
2. When the module is powered off, make sure all digital interfaces (PCM UART, etc) connected with
peripheral devices have no voltage higher than 0.3V. If users’ design cannot meet above conditions,
high level voltages maybe occur in GPIO pins because current leakage from above digital interfaces
may occur.
3.11 PCM Interface
SIM5360A provides hardware PCM interface for external codec. The PCM interface enables
communication with an external codec to support hands-free applications. SIM5360A PCM interface can
be used in two modes: the default mode is auxiliary PCM (8 KHz long sync mode at 128 KHz PCM CLK);
the other mode is primary PCM (8 KHz short sync mode at 2048 KHz PCM CLK). In short-sync
(primary PCM) mode, SIM5360A can be a master or a slave. In long-sync (auxiliary PCM) mode,
SIM5360A is always a master. SIM5360A also supports 3 kinds of coding formats: 8 bits (-law or A-law)
and 16 bits (linear).
Note: PCM interface is multiplexed from GPIO (default setting). The AT command “AT+CPCM” is
used to switch between PCM and GPIO functions. Please refer to document [21] and document [1] for
details.
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3.11.1 Pin Description
Table 24: Pin description
Pins
Pin No.
Description
PCM_OUT
73
PCM data output
PCM_IN
74
PCM data input
PCM_SYNC
75
PCM data synchrony
PCM_CLK
76
PCM data clock
Table 25: Electronic characteristic
Symbol
Parameter
Min
Typ
Max
Unit
VIH
High-level input voltage
1.26
1.8
2.1
VIL
Low-level input voltage
-0.3
0.63
VOH
High-level output voltage
1.35
1.8
1.8
VOL
Low-level output voltage
0.45
3.11.2 Signal Description
The default PCM interface in SIM5360A is the auxiliary PCM interface. The data changes on the high
level of PCM_CLK and is sampled at the falling edge of PCM_CLK in one period. Primary PCM is
disabled after every power-on or every reset event. So user must use AT command to enable the primary
PCM mode after powering on or resetting the module every time if user wants to use Primary
PCM.SIM5360A PCM Interface can be operated in Master or Slave mode if it is configured to primary
PCM. In Master Mode, the Module drives the clock and sync signals that are sent to the external codec.
When it is in Slave Mode, the external codec drives the clock and sync signals which are sent to the
module. Both PCM modes are discussed in this section followed by additional PCM topics.
Auxiliary PCM (128 KHz PCM clock)
-law coding is supported by the auxiliary PCM. The auxiliary codec port operates with standard
long-sync timing and a 128 KHz clock. The AUX_PCM_SYNC runs at 8 KHz with 50% duty cycle.
Most -law codec support the 128 KHz clock.
Figure 28: Synchrony timing
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Figure 29: EXT CODEC to MODULE timing
Figure 30: MODULE to EXT CODEC timing
Table 26: Timing parameters
Parameter
Description
Min
Typ
Max
Unit
T(auxsync)
AUX_PCM_SYNC cycle time
–
125
μs
T(auxsynch)
AUX_PCM_SYNC high time
62.4
62.5
μs
T(auxsyncl)
AUX_PCM_SYNC low time
62.4
62.5
μs
T(auxclk)*
AUX_PCM_CLK cycle time
7.8
–
μs
T(auxclkh)
AUX_PCM_CLK high time
3.8
3.9
–
μs
T(auxclkl)
AUX_PCM_CLK low time
3.8
3.9
–
μs
T(suauxsync)
AUX_PCM_SYNC setup time high before
falling edge of PCM_CLK
1.95
–
–
μs
T(hauxsync)
AUX_PCM SYNC hold time after falling edge
1.95
–
–
μs
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of PCM_CLK
T(suauxdin)
AUX_PCM_IN setup time before falling edge
of AUX_PCM_CLK
70
–
–
ns
T(hauxdin)
AUX_PCM_IN hold time after falling edge of
AUX_PCM_CLK
20
–
–
ns
T(pauxdout)
Delay from AUX_PCM_CLK
AUX_PCM_OUT valid
–
–
50
ns
rising
to
*Note: T(auxclk) = 1/(128 KHz).
Primary PCM (2048 KHz PCM clock)
SIM5360A also supports 2.048 MHz PCM data and sync timing for -law codec. This is called the
primary PCM interface. User can use AT command to take the mode you want as discussed above.
Figure 31: Synchrony timing
Figure 32: EXT CODEC to MODULE timing
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Figure 33: MODULE to EXT CODEC timing
Table 27: Timing parameters
Parameter
Description
Min
Typ
Max
Unit
T(sync)
PCM_SYNC cycle time
–
125
–
μs
T(synch)
PCM_SYNC high time
400
500
–
ns
T(syncl)
PCM_SYNC low time
–
124.5
–
μs
T(clk)
PCM_CLK cycle time
–
488
–
ns
T(clkh)
PCM_CLK high time
–
244
–
ns
T(clkl)
PCM_CLK low time
–
244
–
ns
T(susync)
PCM_SYNC setup time high before falling edge of
PCM_CLK
60
–
–
ns
T(hsync)
PCM_SYNC hold time after falling edge of
PCM_CLK
60
–
–
ns
T(sudin)
PCM_IN setup time before falling edge of
PCM_CLK
50
–
–
ns
T(hdin)
PCM_IN hold time after falling edge of PCM_CLK
10
–
–
ns
T(pdout)
Delay from PCM_CLK rising to PCM_OUT valid
–
–
350
ns
T(zdout)
Delay from PCM_CLK falling to PCM_OUT
HIGH-Z
–
160
–
ns
Note: SIM5360A can transmit PCM data by USB except for PCM interface.
3.11.3 Application Guide
The mode of SIM5360A PCM can be configured by AT command “AT+CPCM and AT+CPCMFMT”, and
the default configuration is master mode using short sync data format with 2.048MHz PCM_CLK and 8
kHz PCM_SYNC. Please refer to document [21] and document [1] for details.
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In addition, the firmware of SIM5360A has integrated the configuration on WM8960GEFL/RV codec
provided by WOLFSON MICROELECTRONICS with I2C interface.
The reference circuit of the reference design of PCM interfaces with external codec IC in the following
figure. It is recommended to use a 26MHz CXO component such as TXC CORPORATION
(www.txccorp.com) 8W26000011.
Figure 34: Reference Circuit of PCM Application with Audio Codec
3.12 GNSS (GPS and GLONASS)
SIM5360A merges GNSS (GPS/GLONASS) satellite and network information to provide a
high-availability solution that offers industry-leading accuracy and performance. This solution performs
well, even in very challenging environmental conditions where conventional GNSS receivers fail, and
provides a platform to enable wireless operators to address both location-based services and emergency
mandates.
3.12.1 Technical specification
Tracking sensitivity
Cold-start sensitivity
Accuracy (Open Sky)
TTFF (Open Sky)
Receiver Type
Update rate
SIM5360A_User_Manual_V1.03
-159 dBm（GPS）
-158 dBm（GLONASS）
-148 dBm
2.5m (CEP50)
Hot start <1s
Cold start 35s
16-channel, C/A Code
GPS L1 Frequency (1575.42±1.023MHz),
GLONASS: 1597.5~1605.8 MHz
Default 1 Hz
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GNSS data format
NMEA-0183
GNSS Current consumption (WCDMA/GSM Sleep mode)
GNSS antenna
Passive/Active antenna
100mA (Total supply current)
Note: Performance will vary depending on the environment, antenna type and signal conditions and so
on.
3.12.2 Operate Mode
SIM5360A supports both A-GPS and S-GPS, and then provides three operating modes: mobile-assisted
mode, mobile-based mode and standalone mode. A-GPS includes mobile-assisted and mobile-based mode.
In mobile-assisted mode, when a request for position location is issued, available network information is
provided to the location server (e.g. Cell-ID) and assistance is requested from the location server. The
location server sends the assistance information to the handset. The handset/mobile unit measures the
GNSS observables and provides the GNSS measurements along with available network data (that is
appropriate for the given air interface technology) to the location server. The location server then
calculates the position location and returns results to the requesting entity.
In mobile-based mode, the assistant data provided by the location server encompasses not only the
information required to assist the handset in measuring the satellite signals, but also the information
required to calculate the handset’s position. Therefore, rather than provide the GNSS measurements and
available network data back to the location server, the mobile calculates the location on the handset and
passes the result to the requesting entity.
In standalone (autonomous) mode, the handset demodulates the data directly from the GNSS satellites.
This mode has some reduced cold-start sensitivity, and a longer time to first fix as compared to the assisted
modes. However, it requires no server interaction and works out of network coverage.
This combination of GNSS measurements and available network information provides:
High-sensitivity solution that works in all terrains: Indoor, outdoor, urban, and rural
● High availability that is enabled by using both satellite and network information
●
Therefore, while network solutions typically perform poorly in rural areas and areas of poor cell
geometry/density, and while unassisted, GNSS-only solutions typically perform poorly indoors. The
SIM5360A GNSS solution provides optimal time to fix, accuracy, sensitivity, availability, and reduced
network utilization in both of these environments, depending on the given condition.
3.12.3 Application Guide
Users can adopt an active antenna or a passive antenna as GNSS signal transceiver. In this document, all
GNSS specification mentioned is from passive antenna. The following is the reference circuit.
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Figure 35: Active antenna circuit
Figure 36：Passive antenna circuit (Default)
In above figures, the components C1 and L1, L2 are used for antenna matching, the values of the
components can only be obtained after the antenna tuning usually, and they are provided by antenna
vendor.C2 in Figure 36 is used for DC isolation. In active antenna circuit, users must use an external
LDO/DCDC to provide VDD voltage whose value should be taken according active antenna characteristic,
and VDD can be shut down to avoid consuming additional current when not being used.
GNSS can be used by NMEA port. User can select NMEA as output through UART or USB. NMEA
sentences are automatic and no command is provided. NMEA sentences include GSV, GGA, RMC, GSA,
and VTG. Before using GNSS, user should configure SIM5360A in proper operating mode by AT
command. Please refer to related document for details. SIM5360A can also get position location
information through AT directly.
Note: GNSS is closed by default, it could be started by AT+CGPS. The AT command has two parameters,
the first is on/off, and the second is GNSS mode. Default mode is standalone mode.
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AGPS mode needs more support from the mobile telecommunication network. Refer to AGPS
application document for details.
3.13 Multi-functional interface
SIM5360A merges functions for various applications. It can enrich users’ design and lower the cost of
users’ hardware.
3.13.1 Sink Current Source
The dedicated pin (ISINK) is intended for driving passive devices，such as LCD backlight, this
implementation is VBAT tolerant and suitable for driving white LEDs. The high-current driver can
maintain a constant current which is set by the AT command “AT+ CLEDITST”, capable of up to 40 mA.
Table 28: Electronic characteristic
Symbol
Description
Min
Typ
Max
Unit
ISINK
Input voltage
0.5
VDD
VBAT
IO
Input current
40
mA
Since the driver is ground-referenced current sink, the operating device it drives must form a current path
between the VDD pin and the ISINK pin. The following figure is for users reference.
VBAT
Pin 45 is VBAT tolerantsuitable for driving white
LEDs
Passive
device
ISINK
High
current
MODULE
Current Controls
Figure 37: Current drive
Note: The sinking current can be adjusted to meet design requirement through the AT command “AT+
CLEDITST =<0>, ”.The “value” ranges from 0 to 15,on behalf of the current changes from
0mA to 150mA in steps of 10mA.
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3.13.2 Reset Function
SIM5360A also have a RESET pin (PIN4) to reset the module. This function is used as an emergency reset
only when AT command “AT+CPOF” and the POWERKEY pin has no effect. User can pull the RESET
pin to ground, then the module will reset.
This pin is already pulled up in module, so the external pull-up resistor is not necessary. A 100nF capacitor
close to the RESET pin is strongly recommended. A reference circuit is recommended in the following
figure.
RESET
Reset Logic
4.7K
Reset Impulse
MODULE
47K
Treset >50ms
RESET
Figure 38: Reset circuit
Note：50ms
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