The AV card is an Apple expansion card that plugs into the PDS connector of any Power Macintosh computer. It contains an I/O system that handles video input and output signals, mixes video with 16-bit graphics, and supports a wide variety of Apple and third-party monitors. The AV I/O system also lets the user connect a television set as a monitor, using either NTSC or PAL format.
The AV card contains a DB-15 monitor connector output.
Here is a diagram of the pin configuration for the DB-15 monitor connector and the signals:
8 7 6 5 4 3 2 1
15 14 13 12 11 10 9
Pin Description Pin Description
--- ----------- --- -----------
1 Red ground 9 Blue video signal
2 Red video signal 10 Monitor sense 2
3 Composite synchronization 11 Synchronization ground
4 Monitor sense 0 12 Vertical synchronization
5 Green video signal 13 Blue ground
6 Green ground 14 Horizontal synchronization
7 Monitor sense 1 15 Horizontal synchronization ground
8 No connection
The AV card also contains two identical connectors for S-Video input and
output, with adapter cables for composite video devices that have RCA
connectors, like television equipment.
Here is a diagram of the pin configuration for the S-Video port and the signals:
4 7 3
2 6 5 1
Pin Input connector Output connector
--- --------------- ----------------
1 AGND AGND
2 AGND AGND
3 Video Y (luminance) Video Y (luminance)
4 Video C (chroma) Video C (chroma)
5 I^2C clock (I-squared)* Composite video
6 +12 V at 250 mA maximum** No connection
7 I^2C data* No connection
* Philips serial bus
** Fused at 1.1 A
Article Change History:
06 Jul 1994 - Added diagram of pin configuration for S-Video and DB-15 ports.
24 Mar 1994 - Corrected wording.
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