ISL51002_14 Datasheet, PDF (16/33 Pages) Intersil Corporation – 10-Bit Video Analog Front End (AFE) with Measurement and Auto-Adjust Features

ISL51002
Register Listing (Continued)
ADDRESS
REGISTER
(DEFAULT VALUE)
BITS
FUNCTION NAME
0x27
ABLC Configuration, (0x40) 0 ABLC Disable
1 Offset DAC Range
3:2 ABLC Pixel Width
6:4 ABLC Bandwidth
0x28
Output Format 1, (0x00)
0 Data Output Format
1 4:2:2 Order
2 4:2:2 Processing
3 8-bit Mode
5:4 Oversampling
6 RGB2YUV Color Space
Conversion Enable
DESCRIPTION
0: ABLC on (default) - use 10-bit digital offset control.
0x000 = -0x200 LSB offset, 0x3FF = +0x1FF LSB offset,
0x200 = 0x000 LSB offset
1: ABLC off - use 10-bit offset DACs, bypass digital adder
(add/subtract nothing, but keep same delay through
channel)
0: ±1/2 ADC fullscale (1 LSB = 1 ADC LSBs)
1: ±1/4 ADC fullscale (1 LSB = 0.5 ADC LSBs)
Number of black pixels averaged every line for ABLC function
00: 16 pixels [default]
01: 32 pixels
10: 64 pixels
11: 128 pixels
ABLC Time constant (lines) = 2^([5+6:4])
000 = 32 lines
100 = 512 lines (default)
111 = 4096 lines
0: 4:4:4 (24-bit/30-bit output)
1: 4:2:2 (16-bit/20-bit output on G and R)
0: First pixel on R channel is U
1: First pixel on R channel is V
0: U, V filtered (high quality)
1: Odd U, V pixels dropped (lower quality)
0: All 10-bits of each channel active
1: 2 LSBs of each channel driven low (in 8-bit applications,
keep the LSBs from switching and generating noise)
00: Normal operation (1x sampling)
01:2x oversampling, 2 samples averaged at ADC output
10:4x oversampling, 4 samples averaged at ADC output
11:8x oversampling, 8 samples averaged at ADC output
In Oversampling mode, the HTOTAL, DC Restore/ABLC Start,
DC Restore Width, and ABLC width values are automatically
multiplied by the oversampling ratio. The pixel clock is divided
by the oversampling ratio when the data is decimated.
Decimator is reset on trailing edge of HSYNC.
0: CSC Disabled
1: CSC Enabled
Note: The data delay through the entire AFE is identical with
CSC on and CSC off.
16
FN6164.3
February 29, 2012