[linux-dvb] stupid question concerning siemens DVB-C/CA routing

[wolfgang@leila.ping.de (Wolfgang Wegner)]

Hi,

sorry for the stupid question...

I am trying to find out how switching the routing is done in
the driver for the CA-part of the siemens DVB-C (old full-featured
card).

What i want to do is connect another frontend to the connectors
where the CA module extension is normally connected. I figured
out the relevant pinning (see below), but now of course have to
modify the driver to switch to "CI mode" without really using
a CI...

I did not find a hardware connection of the enable-input of the
latches used for de-coupling the bus to the CI connectors, so
i assume it is switched by software, but did not find where and
how.

Regards,
Wolfgang

pinning: (not yet complete, just the TS interface)
34-pin connector:
4 SDA
5 SCL
26 GND
26-pin connector:
1 Clk TS-In (Frontend to CI)
2 Clk TS-Out (CI to AV7110)
3 Valid TS-In
4 Valid TS-Out
5 Sync TS-In
6 Sync TS-Out
7 unknown, TS-In (pin 47 of VES1820)
8 GND on module - presence detect?
9 D7 TS-In
10 D7 TS-Out
11 D6 TS-In
12 D6 TS-Out
13 D5 TS-In
14 D5 TS-Out
15 D4 TS-In
16 D4 TS-Out
17 D3 TS-In
18 D3 TS-Out
19 D2 TS-In
20 D2 TS-Out
21 D1 TS-In
22 D1 TS-Out
23 D0 TS-In
24 D0 TS-Out
25 GND
26 +5V