Orchid Fahrenheit Video 3D, User Manual

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Fahrenheit Video 3D User's Manual 38
Appendix A: Technical Specifications
Feature Connector Pin Outs
The feature connectors located at the upper left corner
of the Fahrenheit Video 3D can be used as a single
standard 26-pin VESA feature connector or as dual 34-
pin Local Peripheral Bus (LPB) connectors (see Figure
1.1). The VESA feature connector permits third party
add-on accessories to both share signals and share
control of the VGA circuitry. The following table lists
the VESA feature connector’s pin-out information.
NOTES:
(1) Low Enable External Pixel Data Input to the
motherboard DAC.
(2) Low Enable External Sync and Blanking Inputs to
the motherboard DAC.
(3) Low Enable External Pixel Clock Input to the
motherboard DAC.
Local Peripheral Bus (LPB) Connector
The 34-pin LPB connector is a special feature connec-
tor designed by S3 Incorporated. It provides a bidirec-
tional interface to video devices such as an MPEG
decoder and TV Tuner. The LPB connector is an
extension of the VESA feature connector with spaces
set aside to allow connections to standard 26-pin cables.
Fahrenheit Video 3D Feature Connector Pin-Outs
Pin Function Pin Function Pin Function Pin Function
Y1 Pixel Data 0 Y8 Pixel Data 7 Z2 Ground Z9 Ground
Y2 Pixel Data 1 Y9 Pixel Clock Z3 Ground Z10 Ground
Y3 Pixel Data 2 Y10 Blanking Z4 (See Note 1) Z11 Ground
Y4 Pixel Data 3 Y11 Hor. Sync Z5 (See Note 2) Z12 No Connect
Y5 Pixel Data 4 Y12 Vert. Sync Z6 (See Note 3) Z13 No Pin (Key)
Y6 Pixel Data 5 Y13 Ground Z7 No Connect
Y7 Pixel Data 6 Z1 Ground Z8 Ground
Table A.3: VESA Feature Connector Pin-Outs