RE: [ivtv-devel] Identifying I2C Device

[Ulf <iv...@ek...>]

The PIC is a hot candidate, use a "ohm"-meter to see if any of its pins =
are
connected to the I2C bus if you can then you've probably solved the =
mystery.

/Ulf.

-----Original Message-----
From: ivt...@li...
[mailto:ivt...@li...] On Behalf Of trev
Sent: 28 February 2005 16:04
To: ivt...@li...
Subject: [ivtv-devel] Identifying I2C Device

Hi all

I have identified which i2c addresses are used for the majority of =
devices
on=20
my video capture card (AVC-2410) and most of the ivtv stuff is now =
working:

Composite Input works 100%
Svideo Input untested (no svideo cables)
Tuner input Video working, No audio yet

i2c Address
11  CS53L32A DAC
21  SAA7115HL Video Decoder
40  MSP3415G Sound Processor
43 TDA9887 Tuner IF
60  FQ1216ME/I H-3 Tuner
6B UNKNOWN

As can be seen from the list above I don't know what is at address 6B.
I believe the version of my card (AVC-2010) without a tuner does not =
access=20
this address.
This address is read from alot during settup in windows:

6B W 00
6B r 11 22 FF 00
6B W 00
6B r 11 22 FF 00
6B W 00
6B r 11 22 FF 00
etc

Also when changing input from svideo to composite I get:

6B W 01
6B r 03
6B W 01 03

From composite to tuner:

6B W 01
6B r 03
6B W 01 07

And from tuner to svideo:

6B W 01
6B r 0F
6B W 01 08

From the above I could guess that this is something to do with switching =
the

audio souce since I am not getting any autio out on the tuner.

The other devices on the card are:

PIC16C54C Microchip Microprocessor (could implement an I2C address)
48LCM32B2 NOT SURE WHAT THIS IS
CX23416-12 MPEG-2 Encoder

Any help would be appreciated.

Best Regards

Trev


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