Sony Ericsson Mobile Communications Inc. TR-505-A2 Manuale Utente

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DM15/25 Integrator’s Manual
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6.1.1 
MODULE_PWR_EN_B (Wake)
This signal, located on pin 12 in the system connector, enables the main 5V supply in the phone module so that it powers on.
This is an open collector input to the phone module.  Its reference voltage is the main 5V supply.
6.2 
Data
The data group contains six signals, three output signals from application, two input signals to application, and one I/O signal.
VREF
30, RD (DFMS)
25, CTS
1 - 100k
VCC
RxD
CTS
Phone Module
Application
VREF
27, TD (DTMS)
28, RTS
26, DTR
1 - 100k
VREF
TxD
RTS
DTR
VREF
23, VPPFLASH/DCD
1 - 100k
VCC
DCD
100k
VREF
VPPFLASH_EN
1 - 100k