Hojy Wireless W668 Users Manual
NOTICE:
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.
Changes or modifications made to this equipment not expressly approved by SIMCOM may void the FCC
authorization to operate this equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Radiofrequency radiation exposure Information:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment
should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter
must not be co-located or operating in conjunction with any other antenna or transmitter.
Contents
1、、、、Abstract ...................................................................................... ３３３３
1.1 Goal .......................................................................................... ３３３３
1.2 Term......................................................................................... ３３３３
1.3 References ............................................................................... ３３３３
2、、、、Product features .......................................................................... ３３３３
2.1 Characteristics list .................................................................... ３３３３
2.2 Hardware characteristics .......................................................... ４４４４
3.3 Software characteristics ........................................................... ６６６６
3、、、、Product specification ................................................................... ８８８８
3.1 Contour structure ..................................................................... ８８８８
3.2 Interface describe .................................................................... ８８８８
3.2.1 Interface definition .................................................................... ８
3.2.2 Pins definition ........................................................................... ９
3.3 Interface applications ............................................................ １１
3.3.1 Power interface .......................................................................１１
3.3.2 USB interface .........................................................................１２
3.3.3 RF switching interface ..............................................................１２
3.3.4 USIM interface ........................................................................１３
4、、、、Mechanical properties ............................................................... １４
4.1 Mini-PCI-E ...............................................................................１４
4.2 Rf connector ............................................................................１４
4.2. 1 Antenna cable ........................................................................１４
5、、、、Electrical characteristics ........................................................... １５
5.1 Limit voltage range ...................................................................１５
5.2 Working voltage range...............................................................１５
5.3 Working current .......................................................................１５
5.4 Rf index ..................................................................................１５
5.4.1 GSM/GPRS/EDGE rf index .........................................................１５
5.4.2 WCDMA rf index ......................................................................１９
6、、、、Environmental characteristic .................................................... ２０
6.1 Temperature conditions ...............................................................２０
6.2 Humidity requirement .................................................................２０
7、、、、Verification testing ................................................................... ２０
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1、、、、Abstract
1.1 Goal
W668 is a 3G module based on STE M340 platform. It is a WCDMA/GSM
double mode , wireless providing pronunciation and the data transfer. The
document stipulates the W668 product specification for the relevance personnel
designs, tests , aftersales and marketing.
1.2 Technical Terms
Terms Description
AT Attention Command
GPIO General Purpose I/O
PC Personal Computer
WCDMA Wideband Code Division Multiple Access
UART Universal Asynchronous Receiver/Transmitter
USB Universal Serial Bus
USIM Universal Subscriber Identity Module
Express 1-1
1.3 References
《1424-LZN9012499_U335_Product_Overview_DESC_Rev_C》
2、、、、Product Features
2.1 Product Features List
Platform Features
m
Specificati
on
Description
Ite
1 Chipset STE M340
Quad-band
E-GSM850：824 ~848MHz; 869~893MHz
E-GSM900：880~915MHz; 925~960MHz
2
Frenquenc
y
GSM
DCS1800：1710~1785MHz;
1805~1880MHz
DCS1900：1850~1910MHz;
1930~1990MHz
Band I.：1920~1980MHz; 2110~2170MHz
WCDMA
GPRS Multi-slot class 11
Band II.：1850~1910MHz;
1930~1990MHz
Band V.： 824~849MHz; 869~894MHz
3 Data Rate
Modulatio
4
n
5 RF (send)
RF
6
(receive)
Flight
7
Mode
8 USIM
9 Interface Mini-PCI-E
10
11
2.2 Hardware Features
AT
Command
Text
Masseging
EDGE Multi-slot class 11
WCDMA
GSM GMSK - CS1~CS4
EDGE 8PSK - MCS1~CS9
WCDMA HSUPA - 2.0M
GSM
WCDMA
GSM
WCDMA
Support the AT command set or hardware set flight mode
1 Support 1.8V and 3V SIM cards
2 Support SIM Toolkit, consistent with SAT Class3, GSM
11.14 Release 9
Supports 3GPP TS27.005;3GPP TS27.007;ITU-T V.25ter
Support 3GPP TS27.010 serial port multiplexer
1 Supports MT, MO, CB SMS
2 Supports TEXT and PDU SMS format
3 Support CSD and GPRS transmission, and supports the
user default transfer mode
4 Support SMS saving to the USIM card
Uplink：2.0M/384/64Kbps - HSUPA
Downlink：7.2M/384/128Kbps - HSDPA
E-GSM900(GMSK): 33dBm±2db
E-GSM850(8-PSK): 27dBm ±3db
DCS1800(GMSK): 30dBm ±2db
DCS1800(8-PSK): 26dBm +3/-4db
WCDMA: 1920~1980MHz: 27dBm+1/-3db
WCDMA: 1850~1910MHz: 27dBm+1/-3db
WCDMA: 824~849MHz: 27dBm+1/-3db
E-GSM900: -106dBm
DCS1800: -106dBm
WCDMA: Band I: -108dBm
WCDMA: Band II: -108dBm
WCDMA:Band V:-108dBm
Table 2-1
Based on M340 W668 platform. The hardware system block diagram is as
follows,
Figure 2-2
Key components description:
RF: GSM and TD of the RF share the same Transceiver, including the
following parts.
Transceiver: RF3400 modulates both GSM and WCDMA RF signal. It also
supports 8PSK modulation of EDGE-WCDMA, HSUPA signal and modulation.
FEM：
1．From the GSM Transceiver RF signal power amplifier to support GMSK and
8PSK modes to achieve GSM-PA function;
2. Send and receive signals from various quarters of the WCDMA,managed
to achieve an antenna switch function.
WCDMA-PA: a total of three chips, respectively, from the Transceiver's I, II,
V-band RF for power amplification, with three operating modes and high
amplification efficiency.
Base Band
Digital baseband processor: The DB3350 baseband processor, the internal
integration ARM926EJ, contains numbers of peripherals extensional possibilities
& integrated communication DSP, to achieve the machine's control,
communications protocol processing, and external interface.
Analog baseband processor: The AB3100, the corresponding control voltage for
each group, using I2C interface.
2.3 Software
W668 based on T3G M340's 3G-based program, its software system block
diagram below, the software is divided into three layers:
Abstraction Layer
Abstract hardware processing interface to manage all hardware access, so that
the upper set of software interfaces to use the sameaccess to all hardware
devices, shielding a variety of hardware differences.
Service processing layer
Service processes is to provide services mainly to the outer layer, such as
wireless services, file system services.
Application service layer
Application service is to provide AT commands and other multimedia
applications.
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