Computer Hardware User's Guide

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Quad 1 Quad 2

Quad 3 Quad 4

Programming the TMS320DM642

Capture Enable Bit 3

Disable (default) 0

Enable 1

Position Bit 5 Bit 4

Quadrant 1 0 0

Quadrant 2 0 1

Quadrant 3 1 0

Quadrant 4 (default) 1 1

Table 14. Decoder 1 Input Format Register

Address 04h

Default 01h

7 6 5 4 3 2 1 0

Reserved Input Color Standard

Input Color Standard Bit 2 Bit 1 Bit 0

NTSC 0 0 0

(B, D, G, H, I, N) PAL

0 0 1

(default)

Reserved . . .

The Input Color Standard register is used to inform the DM642 of the input color standard for that given

decoder (1–4). The output format of the DM642 is set to the standard with the largest majority based on

Registers 04h–07h. If the number of input color standards is equal, the DM642 automatically default to

PAL output.

Table 15. Decoder 2 Input Format Register

Address 05h