18

TABLE 11. PRODUCT ID REGISTER

BIT

NUMBER

FUNCTION

DESCRIPTION

RESET

STATE

7-0

Product ID

This 8-bit register specifies the last two digits of the product number. It is a read-only register.

Data written to it is ignored.

TABLE 12. OUTPUT FORMAT REGISTER

BIT

NUMBER

FUNCTION

DESCRIPTION

RESET

STATE

7-5

Video Timing Stan-

dard

000 = (M) NTSC

001 = (M) NTSC with a 0 IRE setup; also called (NSM) NTSC

010 = (B, D, G, H, I) PAL

011 = (M) PAL

100 = (N) PAL

101 = combination (N) PAL; also called (CN) PAL

110 = reserved

111 = reserved

4-3

Output Format

00 = Composite + Y/C

01 = reserved

10 = Composite + RGB (no sync on green)

11 = Composite + RGB (with sync on green)

2-0

Reserved

TABLE 13. INPUT FORMAT REGISTER

BIT

NUMBER

FUNCTION

DESCRIPTION

RESET

STATE

7-5

Input Format

000 = 16-bit 4:2:2 YCbCr

001 = 8-bit 4:2:2 YCbCr

010 = 8-bit BT.656

011 = 16-bit linear RGB

100 = 16-bit gamma-corrected RGB

101 = 24-bit linear RGB

110 = 24-bit gamma-corrected RGB

111 = Blue screen

4

Gamma

Select

These bits are ignored except during linear RGB input modes.

0 = 1 / 2.2

1 = 1 / 2.8

3

Reserved

2-1

Overlay Mixing

Mode

These bits must be set to “11” in 24-bit RGB input modes. Internal mixing should not be se-

lected in BT.656 input mode.

00 = No mixing

01 = Internal mixing

10 = External mixing

11 = Disable overlays

0

Input Resolution

This bit must be set to “0” during BT.656 input mode and when the flicker filter is enabled.

0 = Full resolution (2X upscaling disabled)

1 = SIF resolution (2X upscaling enabled)

HMP8154, HMP8156A