REV. 0

–32–

ADV7183

Table XL. Luma Gain Control 1 Register (Subaddress 2F)

Bit Description

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0Register Setting

LMG[11:8]

1

XXXX

RESERVED

1

1

Set to One

LAGT[1:0]

2

00

Slow (TC = 2 sec)

01

Medium (TC = 1 sec)

10

Fast (TC = 0.2 sec)

11

Dependent on VID_QUAL

NOTES

LMG[11:0] will operate.

Table XLI. Luma Gain Control 2 Register (Subaddress 30)

Bit Description

Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0Register Setting

LMG[7:0]

*

XXXXXXXX

LAGC [1:0] Settings Will Decide What

Mode LMG [11:0] Operates In.

*Luma Manual Gain. Can be used to program a desired manual chroma gain or read back the actual used gain value.

Table XLII. Manual Gain Shadow Control 1 Register (Subaddress 31)

Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting

LMGS[11:8]

1

XXXX

RESERVED

1

1

1

Set to One

SGUE

2

0

Disable LMGS Update

1

Use LMGS Update Facility

NOTES

value will only become active when LAGC[2:0] set to manual fixed gain. The function and readback value are dependent on LAGC[2:0] setting.

Table XLIII. Manual Gain Shadow Control 2 Register (Subaddress 32)

Bit Description Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Register Setting

LMG[7:0]

*

XXXXXXXX

*Chroma Manual Gain. Lower 8 bits, see LMG[11:8] for description.