BT848 ETC, BT848 Datasheet - Page 110

• Manufacturer Part Number: BT848
• Description: Single-Chip Video Capture for PCI
• Manufacturer: ETC

C
Chroma (V) Gain Register, Lower Byte
Chroma (V) Gain Register, Lower Byte
Memory Mapped Location 0x038 – (SAT_V_LO)
Upon reset it is initialized to 0xB4. SAT_V_LO(0) is the least significant bit. SAT_V_MSB in the CONTROL register
and SAT_V_LO concatenate to give a 9-bit register (SAT_V).
100
Bits
ONTROL
[7:0]
R
EGISTER
Type
RW
D
Default
0xB4
EFINITIONS
SAT_V
Name
SAT_V_LO
Decimal Value
511
510
.
.
181
180
.
.
128
.
.
1
0
Description
This register is used to add a gain adjustment to the V component
of the video signal. By adjusting the U and V color components of
the video stream by the same amount, the saturation is adjusted.
L848A_A
Hex Value
0x1FF
0x1FE
.
.
0x0B5
0x0B4*
.
.
0x080
.
.
0x001
0x000
Single-Chip Video Capture for PCI
% of Original Signal
283.89%
283.33%
.
.
100.56%
100.00%
.
.
71.11%
.
.
0.56%
0.00%
Bt848/848A/849A
Brooktree
®