wm8198scds-v Wolfson Microelectronics plc, wm8198scds-v Datasheet - Page 30

• Manufacturer Part Number: wm8198scds-v
• Description: 8 + 8 Bit Output 16-bit Cis/ccd Afe/digitiser
• Manufacturer: Wolfson Microelectronics plc

WM8198
Table 7 Register Control Bits
w
Offset DAC
(Red)
Offset DAC
(Green)
Offset DAC
(Blue)
Offset DAC
(RGB)
PGA gain
LSB (Red)
PGA gain
LSB (Green)
PGA gain
LSB (Blue)
PGA gain
LSB (RGB)
PGA gain
MSBs (Red)
PGA gain
MSBs
(Green)
PGA gain
MSBs (Blue)
PGA gain
MSBs
(RGB)
REGISTER
BIT
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
NO
0
0
0
0
DAC[7:0]
DAC[7:0]
DAC[7:0]
DAC[7:0]
PGA[8:1]
PGA[8:1]
PGA[8:1]
PGA[8:1]
NAME(S)
PGA[0]
PGA[0]
PGA[0]
PGA[0]
BIT
DEFAULT
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
0
0
0
0
Red channel offset DAC value
Green channel offset DAC value
Blue channel offset DAC value
A write to this register location causes the red, green and blue offset DAC
registers to be overwritten by the new value
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.
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.
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.
A write to this register location causes the red, green and blue PGA LSB gain
registers to be overwritten by the new value
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
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
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
A write to this register location causes the red, green and blue PGA MSB gain
registers to be overwritten by the new value.
Bits 8 to 1 of red PGA gain. Combined with green LSB register bit to form
DESCRIPTION
PD, Rev 4.3, August 2008
Production Data
30