Sony Ericsson GR64 - Manual (Page 11)

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2 GR64 Wireless Modem
2.1 About the GR64
The Sony Ericsson Gx64 family of devices are Quad Band GSM/GPRS wireless modems
operating in the GSM 850/900/1800/1900 bands.
These products belong to a new generation of Sony Ericsson wireless modems, and
are intended to be used in machine-to-machine applications and man-to-machine
applications. They are used when there is a need to send and receive data (by SMS,
CSD, or GPRS), and make voice calls over the GSM network.
The GR64 conforms to the European Union (EU) Restriction of Hazardous Substances
(RoHS) directive 2002/95/EC.
The GR64 is available in four variants. Table 1: GR64 Variants lists the hardware and
software features for each variant. The device is available in two hardware variants.
Each hardware variant is available in two software variants. The first hardware variant
(/10 and /30) is equipped with PCM compatible pins but does not have a USB
interface or an integrated SIM card holder. The second hardware variant (/20 and
/40) is equipped with a USB interface and an integrated SIM card holder, but does not
have PCM compatible pins.
Table 1: GR64 Variants
Variant
PCM
Compatible
PINS
VREF Input USB
SIM Card
Holder
Embedded
Applications
DPY 102 1494/10 Yes No No No No
DPY 102 1494/20 No Yes Yes Yes No
DPY 102 1494/30 Yes No No No Yes
DPY 102 1494/40 No Yes Yes Yes Yes
One software variant is designed to be controlled from a micro-controller situated on
the host application. The other software variant offers the option to run applications
embedded onto the module itself. When using the embedded application version the
controlling script can be run internal to the module, with or without the use of an
external control.
A typical application, involves a micro-controller and a wireless modem, in which the
micro-controller sends AT commands to the wireless modem via an RS232
communications link.