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Chapter 6

ICS1531 Rev N 12/1/99

December, 1999

ICS1531 Data Sheet - Preliminary

6.5.35

The B_COARSE Register is the first adjustment for the blue channel of the ADC. It is used to coarsely

adjust the analog signal used by the ADC. (See also Section 6.5.38, “Register 36h: B_FINE”.)

Table 6-34.

B_COARSE Register

Bit

Bit Name

Bit Definition

Ac-

cess

Spec.

Func.

Re-

set

33:7-

33:6

Reserved

Reserved.

• See Section 6.1, “Reserved Bits”.

• These bits can be programmed to ‘0’.

––

33:5

Reserved

Reserved.

• See Section 6.1, “Reserved Bits”.

• This bit must be programmed to ‘1’.

––

33:4-

33:2

Reserved

Reserved.

• See Section 6.1, “Reserved Bits”.

• These bits can be programmed to ‘0’.

––

33:1-

33:0

B_Coarse_ADJ

[1-0]

Blue Coarse (Gain) Adjust [1-0].

These bits adjust the blue channel of the ADC by adjusting the

gain of the video amplifier for the analog signal used by the

ADC.

• 0 = The gain is 1.0 (default).

• 1 = The gain is 1.2.

• 2 = The gain is 1.4 (typical).

• 3 = The gain is 1.6.

R/W

–

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