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Appendix F ATI RAGE PRO AGP Graphics Cards
Compaq Personal Computers
Original - April 1998
F-8
F.6.3 ATI MULTIMEDIA CHANNEL CONNECTOR
The ATI Multimedia Channel (AMC) is provided through a 40-pin header (Figure F-5) that
includes the VESA standard feature (VSFC) connector (also known as the VGA pass-through
connector) and additional signal interface. The AMC interface can operate in one of the
following three modes:
VSFC Mode
– The VESA Standard Feature Connector (VFSC) mode supports an overlay
peripheral such as an MPEG or TV card. This mode, available in all VGA modes and accelerated
modes, receives video data through the VSFC I/F and overlays the data onto the graphics display
(display clock < 80 Hz).
DVS Mode
– The Digital Video Stream (DVS) mode supports connection to a video decoder.
MPP Mode
– The Multimedia Peripheral Port (MPP) mode supports data streaming from Host
memory out of the multimedia interface.
Figure F–5
.
AMC Connector (40-Pin Header P1)
Table F–7.
Multimedia Interface Connector Pinout
Table F-7.
Multimedia Interface Connector Pinout
Pin Signal Description Pin Signal Description
Z1 GND Ground Y1 P0 Pixel Data 0
Z2 GND Ground Y2 P1 Pixel Data 1
Z3 GND Ground Y3 P2 Pixel Data 2
Z4 EVIDEO- Overlay Enable Y4 P3 Pixel Data 3
Z5 ESYNC- External Sync Enable Y5 P4 Pixel Data 4
Z6 EDCLK External Clock Enable Y6 P5 Pixel Data 5
Z7 SDA Serial Data Y7 P6 Pixel Data 6
Z8 GND Ground Y8 P7 Pixel Data 7
Z9 GND Ground Y9 DCLK Pixel Data Clock
Z10 GND Ground Y10 BLANK DAC Output Blanking
Z11 GND Ground Y11 HSYNC Horizontal Sync
Z12 SCL Serial Clock Y12 VSYNC Vertical Sync
Z13 -- KEY Y13 GND Ground
Z14 -- KEY Y14 AZY
Z15 + 5 VDC +5 volts DC Y15 SAD3 SA Data Bit 3
Z16 RESET- Reset Y16 SAD7 SA Data Bit 7
Z17 SAD6 SA Data Bit 6 Y17 SAD5 SA Data Bit 5
Z18 RESVD Reserved Y18 REV
Z19 A. GND Ground Y19 +12 VDC +12 volt DC
Z20 AUD R Right Audio Y20 AUD L Left Audio
NOTE: VESA standard interface is unshaded.
Y1
Z1
Y13
Z12
Y20
Z20
Multimedia Interface
VESA Standard Feature I/F