WM8198
Production Data
REGISTER
BIT
NO
BIT
NAME(S)
DEFAULT
DESCRIPTION
Offset DAC
(Red)
7:0
DAC[7:0]
0
Red channel offset DAC value
Offset DAC
(Green)
7:0
7:0
7:0
DAC[7:0]
DAC[7:0]
DAC[7:0]
0
0
0
Green channel offset DAC value
Blue channel offset DAC value
Offset DAC
(Blue)
Offset DAC
(RGB)
A write to this register location causes the red, green and blue offset DAC
registers to be overwritten by the new value
PGA gain
LSB (Red)
0
0
0
PGA[0]
PGA[0]
PGA[0]
0
0
0
This register bit forms the LSB of the red channel PGA gain code. PGA gain
is determined by combining this register bit and the 8 MSBs contained in
register 101000.
PGA gain
LSB (Green)
This register bit forms the LSB of the green channel PGA gain code. PGA
gain is determined by combining this register bit and the 8 MSBs contained in
register 101001.
PGA gain
LSB (Blue)
This register bit forms the LSB of the blue channel PGA gain code. PGA gain
is determined by combining this register bit and the 8 MSBs contained in
register 101010.
PGA gain
0
PGA[0]
0
0
A write to this register location causes the red, green and blue PGA LSB gain
registers to be overwritten by the new value
LSB (RGB)
PGA gain
MSBs (Red)
7:0
PGA[8:1]
Bits 8 to 1 of red PGA gain. Combined with red LSB register bit to form
complete PGA gain code.
When PGAMODE=0: PGA Gain (V/V) = 416/(566-PGA[8:0)
When PGAMODE=1: PGA gain (V/V) = 1 + PGA[8:0]x4/511
PGA gain
MSBs
(Green)
7:0
7:0
7:0
PGA[8:1]
PGA[8:1]
PGA[8:1]
0
0
0
Bits 8 to 1 of red PGA gain. Combined with green LSB register bit to form
complete PGA gain code.
When PGAMODE=0: PGA Gain (V/V) = 416/(566-PGA[8:0)
When PGAMODE=1: PGA gain (V/V) = 1 + PGA[8:0]x4/511
PGA gain
MSBs (Blue)
Bits 8 to 1 of red PGA gain. Combined with blue LSB register bit to form
complete PGA gain code.
When PGAMODE=0: PGA Gain (V/V) = 416/(566-PGA[8:0)
When PGAMODE=1: PGA gain (V/V) = 1 + PGA[8:0]x4/511
PGA gain
A write to this register location causes the red, green and blue PGA MSB gain
registers to be overwritten by the new value.
MSBs
(RGB)
Table 6 Register Control Bits
PD Rev 4.0 June 2004
28
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
