Access NSM01 NFC Smartcard Module (NSM01) User Manual Installation Manual
Access Ltd NFC Smartcard Module (NSM01) Installation Manual
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Installation Manual
NFC Smartcard Module
Hardware Installation Manual
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NFC Smartcard Module
Installation Manual
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Hardware Installation Manual
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1. Introduction
This document describes the hardware of the NFC smartcard module (NSM). The readers of this document
would benefit if they have prior knowledge of the specifications mentioned in References section.
2. References
The readers of this document shall have knowledge on the following specifications
USB CCID rev1.1 : Specification for Integrated Circuit Cards Interface Devices
ISO/IEC 14443-2 : Radio frequency power and signal interface
ISO/IEC 14443-3 : Initialisation and anti-collision
ISO/IEC 14443-4 : Transmission protocol
Mifare contactless card (Classic 1K, Classic 4K and Ultralight) datasheets
ISO/IEC 7816-3 : Electronic signals and transmission protocols
ISO/IEC 7816-4 : Inter-Industry commands for interchange
NSM USB/Serial software reference manual
3. FCC 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.
No changes shall be made to the equipment without the manufacturer’s permission as this may void the user’s
authority to operate the equipment
It is the responsibility of the product manufacturer to ensure compliance with FCC Part 15B with the NFC Smart
Module integrated into their product.
The host product using NSM module shall have the following text on a permanent label.
Contains FCC ID : ZERNSM01
The label should be on a visible location outside the enclosure of the product.
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4. Product pictures
4.1. Contactless NSM board – Top view
HOST
connector
Smartcard Add-on
Connector
NOTE: The host connector connects to a 30 way FFC cable from the host system. This connector
has the USB D+/- signals, Serial interface TX/RX signals and the Power and Ground. For more
information on this connector pinout see Host connector section. The user can configure which
interface the NSM shall use to communicate with the host. For more information on host
interface selection see Host Interface Selection section.
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4.2. Contactless NSM board
Antenna
connectors
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4.3. Typical Hardware Setup
The following diagram and pictures shows a typical setup for NSM module.
NSM module
Antenna #0 Antenna #1
USB or Serial
Host
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The following pictures show a typical setup. Note that the antenna and the Serial/USB host shown in the
pictures are for illustration only. The actual size and shape of the user’s antenna and host system may vary.
Serial/
USB Host
NSM
Module
Antenna #0
Antenna #1
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5. Installation
5.1. Hardware Prerequisites
The following section shows the hardware required for the installation.
Serial or USB host system where the NSM module will connect to.
NFC module and 30 way host FFC cable
Antenna and two U.FL coax cables – If two antennas are used then there will be two set of antenna boards
and four coax cables
NOTE: The Antenna and the U.FL coax cables can be supplied by Access IS or the user can design
the antenna using the support provided by Access IS. U.FL cables are widely available from
electronics stores like RS/Farnell.
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5.2. Hardware Installation Steps
The following details the installation steps with diagrams.
1, Turn OFF power for the host system before starting the installation
2, Connect the host system to the NFC module using the 30 way FCC cable as shown below. Please refer to Host
connector section for the connector location and its pinouts.
NFC module
Host system
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3, Connect the antenna to the NFC module using the coax cables.
Antenna #0
Antenna #1
NSM Module
4, After the connections are done, select/verify the correct host interface selection on HOST_IFSEL_IO pins.
Please refer to Host Interface Selection for HOST_IFSEL_IO pin settings.
5, If the product using the NSM module has a host cable, then a ferrite is required to be attached to the host
cable. Please refer Cable Ferrite Specification for the characteristics of the required ferrite and the location of
the ferrite on the host cable.
NOTE : If single antenna operation is enabled, then firmware uses only Ant #1 – Port J8 and J9. Ant
#0, port J2 and J3 are disabled.
NOTE : Antenna coax cables are polarised. Connect the corresponding connectors with +ve
markings and ground (triangle) markings on the antenna and NSM module
NOTE : The cable ferrite is required to meet the FCC emissions requirement. The user should ensure
that the cable ferrite is fitted in accordance to the specifications outlined in this manual. Failure to
do so might void the FCC certification.
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6, Power up the host system or connect the host adapter to the USB/Serial port. Now, the NFC module and the
smart card module should start working. If the host interface is USB, then NSM module shall start enumerating
as a HID device and a smartcard reader as shown below.
7, Application software can now communicate to NSM module through USB interface or through serial
communication (See Serial Communication Settings).
5.3. Software Setup
Depending on the host interface selected, please refer USB or Serial software reference manual.
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6. Cable Ferrite Specification
Each NSM module is shipped with a cable ferrite. This ferrite is required on the host cable (if any) to get the
emissions levels within the acceptable limits. The cable is passed through the ferrite without any loops. The
electrical specification of the ferrite is given below.
The recommended ferrite is from Wurth electronics, Part number – 74 271 111.
The ferrite should be located close to the device (using the NSM module) and it should be spaced 100mm from
the device. The position of the ferrite can be critical with regards to the attenuation of radiated emissions. The
following diagram shows a typical installation.
To Host
To Device
100 mm
Ferrite
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7. Hardware Connections and Pinouts
There are three connectors that provides interface to the NSM module. Each of these connectors are described
in detail on the following sections.
7.1. Host connector
The host connector provides interface to the NSM host. Further, it also has additional signals that are brought
out of the module for host mode selection and for future expansion. The following diagram shows the location
of the 30 way FFC host connector and the pin#1 location.
HOST
connector
PIN #1
The following table shows the pinouts for the host connector.
Pin #
Signal Type
Signal
Description
1
Ground
GND
Ground signal
2
3V3 CMOS input
HOST_IFSEL_IO2
Host interface selection input – sampled during reset
3
3V3 CMOS input
HOST_IFSEL_IO1
Host interface selection input – sampled during reset
4
3V3 CMOS input
HOST_IFSEL_IO0
Host interface selection input – sampled during reset
5
Ground
GND
Ground signal
6
3V3 CMOS input
CAN1_RX
CAN host receiver line – Not used
7
3V3 CMOS output
CAN1_TX
CAN host transmitter line – Not used
8
Ground
GND
Ground signal
9
Open collector
output/input
I2C0_SCL
External I2C interface – Not used
10
Open collector
I2C0_SDA
External I2C interface – Not used
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output/input
11
Ground
GND
Ground signal
12
3V3 CMOS output
SPI0_CS1
External SPI interface slave select 1 – Not used
13
3V3 CMOS output
SPI0_CS0
External SPI interface slave select 0 – Not used
14
3V3 CMOS output
SPI0_SCK
External SPI interface clock – Not used
15
3V3 CMOS output
SPI0_MOSI
External SPI interface MOSI – Not used
16
3V3 CMOS input
SPI0_MISO
External SPI interface MISO – Not used
17
Power input
5V0
5V power input
18
USB data lines
USB D-
USB D- signal
19
USB data lines
USB D+
USB D+ signal
20
Power input
5V0
5V power input
21
3V3 CMOS output
DEBUG_UART_RTS_n
Debug UART RTS signal, active low
22
3V3 CMOS input
DEBUG_UART_CTS_n
Debug UART CTS signal, active low
23
3V3 CMOS input
DEBUG_UART_RX
Debug UART Receiver line
24
3V3 CMOS output
DEBUG_UART_TX
Debug UART Transmitter line
25
Power input
5V0
5V power input
26
3V3 CMOS output
HOST_UART_RTS_n
Serial host UART RTS signal, active low
27
3V3 CMOS input
HOST_UART_CTS_n
Serial host UART CTS signal, active low
28
3V3 CMOS input
HOST_UART_RX
Serial host UART Receiver line
29
3V3 CMOS output
HOST_UART_TX
Serial host UART Transmitter line
30
Power input
5V0
5V power input
7.2. Host Interface Selection
The NSM module will select the host interface depending on the HOST_IFSEL_IOx signal values during reset. The
following table shows the different modes of operation based on the HOST_IFSEL_IOx signal.
HOST_IFSEL_IO2
Host adapter – J9
HOST_IFSEL_IO1
Host adapter – J8
HOST_IFSEL_IO0
Host adapter – J7
Operating mode
0
0
0
USB mode
0
0
1
Serial mode
0
1
0
USB mode
0
1
1
USB mode
1
0
0
USB mode
1
0
1
USB mode
1
1
0
Serial Bootloader mode –Used for firmware
update
1
1
1
USB Bootloader mode – Used for firmware
update
If host adapter board is used, then the “0” in the above table denotes jumper installed and “1” denotes jumper
removed.
Note that if any of the HOST_IFSEL_IO pins are left floating, then the module reads that pin as “1”.
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7.3. Serial Communication Settings
In serial mode, the module by default uses the following serial communication settings.
Parameter
Value
Baud Rate
115200
Data format
8 bits
Parity
None
Stop bits
1
Flow Control
RTS/CTS
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7.4. NFC connectors
The NSM module can be configured to use dual antenna or single antenna. The antenna ports are shown in the
table below.
Connector
Description
J2
Antenna #0 Positive end
J3
Antenna #0 Ground end
J8
Antenna #1 Positive end
J9
Antenna #1 Ground end
If one of the antennas is not available, then, the pair of ports for that antenna can be left unconnected. There is
no need for port termination.
If the module is configured for single antenna, then Antenna #0 is disabled. (Ports J2 and J3 are disabled). The
module uses Antenna #1 (Ports J8 and J9) for NFC communication.
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7.5. NFC Antenna
The NFC antenna is a simple LC circuit tuned to 13.56MHz. The following diagram show the circuit of the
antenna
LC2
C1a
Phase angle @13.56 MHz = 0 degree,
+/- 10 degree Antenna
loop
C1b
The Antenna is tuned to resonate at 13.56MHz with a phase angle tolerance of +/-10 degrees. The following
graph shows the impedance and phase for a typical antenna tuned to 13.56MHz.
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The following table provides information on the maximum and minimum values for the NFC antenna
parameters.
Parameter
Minimum
Typical
Maximum
Impedance @13.56MHz
800 Ohms
1500 Ohms
-
Phase @ 13.56MHz
-10 Degrees
0 Degrees
+10 Degrees
Antenna Coil inductance
700nH
1200nH
2000nH
Antenna Coil Q
15
25
35
Antenna Gain
0.6 (-2.21 dB)
0.7 (-1.54 dB)
0.8 (-0.96 dB)
Antenna maximum size
-
-
11cm x 15cm
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8. Revision
Revision
Description
0.0
Initial version
0.1
Antenna tuning and dimensions added
0.2
Installation section added
0.2.0
NFC only version
0.2.1
Pictures updated
UL review comments incorporated
0.2.2
Changed wording on Cable Ferrite specification
0.2.3
Cable ferrite added into installation and its location shown