
Multiplexer User's Guide
Confidential / Released
s
mo b i l e
Mux_guide_v06 Page 22 of 36 30.06.2004
Figure 4: Relationship between the customer µC and the GSM engine µC
DIS-
CONNECTED
DIS-
CONNECTED-
NEGOTIATION
CONNECTED
CLOSED-
DOWN
Start Up
DLC Establishment
Close Down
Close Down
Close Down
DLC
parameter
negotiation
DLC Release
Information
Transfer
DIS-
CONNECTED
DIS-
CONNECTED-
NEGOTIATION
CONNECTED
CLOSED-
DOWN
Start Up
DLC Establishment
Close Down
Close Down
Close Down
DLC
parameter
negotiation
DLC Release
Inform ation
Transfer
Customer µC
Master state machine
GSM engine µC
Slave state machine
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