WM_PRJ_Q2501_PTS_002
- 001
March
2004
confidential ©
Page:
73 / 79
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged
without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à
des tiers sans son autorisation préalable.
When it is necessary to download a firmware into the WISMO module without
going through the RS232 interface, access to the module is forced via the
debug connector. In such a case, input signals coming from this connector
mask the input signals coming from the MAX3237 device.
VCC and GND are available on the debug connector to allow the powering of
an external RS232 transceiver (such as MAX3237 or MAX3238) in order to, for
example, communicate with a PC via a COM port (COM1 or COM2).
Through the debug connector, it is also possible to spy the signals on the serial
link.
Note: the presence of both R410 and R411 (2.2 k
Ω
resistors) does not limit the
serial link speed.
An economical solution consists in making the debug connection using 8 Test
points (TP) and placing these points to the edge of the application board.
Summary of Contents for WISMO Quik Q2501
Page 69: ......
