Sony Ericsson GT47 - Page 9

2. GT47/GT48 CONTROL TERMINALS
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LZ T 123 7605 P1C
Figure 2.1 Main Blocks in a Wireless System (embedded application)
Figure 2.2 Main Blocks in a Wireless System (external micro-controller)
SIM
MS
POWER
SUPPLY
GT47 / GT48
GSM
ENGINE
DCE DTE
STATUS &
RESPONSE
‘AT’ COMMAND
CONTROL
EMBEDDED
APPLICATION
SYSTEM CONNECTOR
GSM NETWORK
SIM
MS
POWER
SUPPLY
GT47 / GT48
GSM
ENGINE
DCE
SYSTEM CONNECTOR
GSM NETWORK
DTE
EXTERNAL
APPLICATION
MS STATUS &
RESPONSE
‘AT’ COMMAND
CONTROL
D
T
E