Data Group Recommended Circuitry; Vppflash/Dcd; Figure 23: Data Groupd - Wavecom CM52 Integrator's Manual

3.2

Data Group Recommended Circuitry

The data group contains six signals: three output signals from application, two input signals to
application, and one I/O signal.

VPPFLASH/DCD

3.2.1
This signal, located on pin 23 in the system connector, can be used by the application to enable
flashing of the phone module. To enter flash-mode, the application shall set VPPFLASH_EN active
high, then enable the MODULE_PWR_EN_B pin.
CM52 Integrators' Manual
WI_DEV_CM52_UGD_001-001
Page 42 of 53
Application
RxD
CTS
1 - 100k
TxD
RTS
DTR
VPPFLASH_EN
VCC
1 - 100k
DCD
Figure 23: Data Group Diagram
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Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable
VCC
1 - 100k
VREF_CA
VREF_CA
VREF_CA
VREF_CA VREF_CA
1 - 100k
VREF_CA
100k
CM52 Integrators' Manual
Phone Module
30, RD (DFMS)
25, CTS
27, TD (DTMS)
28, RTS
26, DTR
23, VPPFLASH/DCD