LG Electronics USA TTAG11NE Telematics User Manual Descriptive Information
LG Electronics USA Telematics Descriptive Information
User Manual
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Descriptive Information
Technical Description
The RF platform of GEN11 supports highly integrated LTE/UMTS/GSM-transceiver, with all necessary features
to enable multi mode, multi band car telematics applications. It incorporates a fully integrated dual mode
receiver, multi band TX outputs, TCVCXO control, a measurement interface, Qualcomm(Transceiver / Modem)
compliant high speed data and control interface, a multi mode timer unit and all necessary front end signals
for the complete RF Engine control. Overall the GEN11 directly supports RF engines with up to GSM bands,
WCDMA bands and LTE bands.
1. RF Transceiver (WTR3925)
Multimode operation (See modem IC documents for specific capabilities)
- 3GPP GSM, GPRS, and EDGE (WTR3925/WTR3905 only)
- 3GPP WCDMA Rel 99, HSDPA, HSUPA, HSPA+
- 3GPP LTE FDD and TDD, with carrier aggregation (WTR3925 only)
- TD-SCDMA
LTE carrier aggregation
- WTR3925 only
- Downlink inter-band (20 MHz and 20 MHz)
- Downlink intra-band
– Non-contiguous 20 MHz + 20 MHz
– Contiguous, 40 MHz for certain bands
-
1) RF Transmitter Part
Transmit signal paths
- Ten single-ended Tx outputs (4 LB, 4 MHB, and 2 HMLB) – WTR3925/WTR3905 only
- Six single-ended Tx outputs (3 LB, 2 MHB, and 1 HMLB) – WTR3900 only
- One 4-line analog baseband interface from modem IC (differential I and Q)
- One baseband-to-RF quadrature upconverter supports all Tx bands
- RF AGC amplifiers and filters
LO generation and distribution
- Single Tx PLL; divider and distribution circuits to support all Tx bands
Tx bandpass filters
- Eliminated for most modes/bands supported
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2) RF Receiver Part
Primary receiver paths
- 14 single-ended PRx inputs (4 LB, 5 MB, 1 MLB, 4 HB)
- Three PRx/CA1 RF-to-baseband quadrature downconverters (LB, MB, HB)
- Three PRx/CA2 RF-to-baseband quadrature downconverters (LB, MB, HB)
- Baseband filtering and amplifiers
- Two single-ended I and Q interfaces to modem IC (PRx/CA1, PRx/CA2)
Diversity receiver paths
- 14 single-ended DRx inputs (4 LB, 5 MB, 1 MLB, 4 HB)
- Three DRx/CA1 RF-to-baseband quadrature downconverters (LB, MB, HB)
- Three DRx/CA2 RF-to-baseband quadrature downconverters (LB, MB, HB)
- Baseband filtering and amplifiers
- Two single-ended I and Q interfaces to modem IC (DRx/CA1, DRx/CA2)
2. RF Transceiver (WTR4905)
Multimode operation (See modem IC documents for specific capabilities)
- 3GPP GSM, GPRS, and EDGE
- 3GPP WCDMA Rel 99, HSDPA, HSUPA, HSPA+
- 3GPP LTE FDD and TDD
Advanced RF techniques
- Mobile Rx diversity (but not SHDR due to single Rx VCO)
- Simultaneous GNSS
1) RF Transmitter Part
Transmit signal paths
- Wideband single-ended Tx outputs
- WTR4905 = 5
- 4-line analog baseband interface from modem IC (differential I & Q)
- One baseband-to-RF quadrature upconverter supports all Tx bands RF AGC amplifiers
LO generation and distribution
- Tx PLL; divider and distribution circuits to support all Tx bands
External Tx bandpass filters
- Eliminated for most modes/bands supported
2) RF Receiver Part
Primary receiver paths
- Single-ended PRx inputs
WTR4905 = 8 (3 LB, 3 MB, 2 HB)
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- PRx RF-to-baseband quadrature downconverters
Two SAWless: LB for GSM, MB/HB for GSM and TD-SCDMA
For all other WAN:
WTR4905 = 3 (LB, MB, and HB)
- Baseband filtering and amplifiers
- 2-line analog baseband interface to modem IC (single-ended I & Q)
- Diversity receiver paths
- Single-ended DRx inputs
WTR4905 = 7 (3 LB, 2 MB, 2 HB)
- DRx RF-to-baseband quadrature downconverters
WTR4905 = 3 (LB, MB, and HB)
- Baseband filtering and amplifiers
- 2-line analog baseband interface to modem IC (single-ended I & Q)
3. Modem Part (MDM9615)
The MDM9x40 is the latest-generation Qualcomm Technologies, Inc. (QTI) MDM device, which further expands
mass-market chipset capabilities by making 3G and 4G high-speed data services accessible to more consumers
in developed and developing countries. An MDM device is similar to a QTI MSM™ device, but without
multimedia logic.
The MDM9x40 chipset supports high-speed data capabilities over a wide range of air interface standards.
The MDM9x40 device is fabricated using the advanced 20 nm SoC CMOS process, and is available in the 8.6 ×
9.8 × 0.82 mm, 527-pin pico-scale package (527 PSP). It includes many ground pins for improved electrical
grounding, mechanical strength, and thermal continuity.
4. Power Management Part (PMD9645)
The PMD9645 device integrates all the wireless product’s power management, general housekeeping, and user
interface support functions into a single mixed-signal IC. Its versatile design is suitable for any multimode,
multiband product.
The PMD9645 mixed-signal BiCMOS device is available in the 103-pin wafer-level nanoscale package (103
WLNSP) that includes ground pins for improved electrical ground, mechanical stability, and thermal continuity.
- Input power management
- Output voltage regulation
- General housekeeping
- User interfaces
- IC interfaces
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5. Clocks
The PMIC includes several clock circuits whose outputs are used for general housekeeping functions, and
elsewhere within the handset system. These circuits include a 19.2 MHz XO with multiple controllers and
buffers, an MP3 clock output, an RC oscillator, and sleep-clock outputs.
Performance specifications for these functions are presented in the following subsections.
- 19.2MHz : An external crystal is supplemented by on-chip circuits to generate the desired 19.2 MHz
reference signal. Using an external thermistor network, the on-chip ADC, and advanced temperature
compensation software, the PMIC eliminates the large and expensive VCTCXO module required by
previous-generation chipsets. The XO circuits initialize and maintain valid pulse waveforms, and
measure time intervals for higher-level handset functions. Multiple controllers manage the XO warmup
and signal buffering, and generate the desired clock outputs.
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Any changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate this equipment.
RF Exposure Statement
The antenna(s) must be installed such that a minimum separation distance of at least 20 cm is maintained
between the radiator (antenna) and all persons at all times. This device must not be co-located or operating in
conjunction with any other antenna or transmitter. The highest permitted antenna gains including cable loss for
use with this device are:
GSM 850 -6.15 dBi
GSM 1900 -7.09 dBi
WCDMA 2 -7.09 dBi
WCDMA 4 -8.05 dBi
WCDMA 5 -6.15 dBi
LTE 2 -7.09 dBi
LTE 4 -8.05 dBi
LTE 5 -6.15 dBi
LTE 12 -6.29 dBi
LTE 13 -6.46 dBi
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Manual Information To the End User
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.
IC Warning
This device complies with Industry Canada licence-exempt RSS standard(s)."
Operation is subject to the following conditions: (1) this device may not cause interference, and (2) 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 : (1) l'appareil ne doit pas provoquer de
brouillage, et (2) l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d'en compromettre le fonctionnement.