HMP8154 データシートの表示（PDF） - Intersil
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HMP8154 Datasheet PDF : 34 Pages
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HMP8154, HMP8156A
TABLE 14. VIDEO PROCESSING REGISTER
BIT
NUMBER
FUNCTION
SUB ADDRESS = 03H
DESCRIPTION
7
Luminance
Processing
0 = None
1 = Y Lowpass filtering enabled
6
Composite Video
0 = None
Limiting
1 = Lower limit of composite active video is about half the sync height
5
SCH Phase
Mode
0 = Never reset SCH phase
1 = Reset SCH phase every 4 (NTSC) or 8 (PAL) fields
4
RGB Pedestal En- 0 = Don’t add blanking pedestal to RGB output
able
1 = add blanking pedestal to RGB output
3
RGB pin Assignment 0 = use HMP8156 assignments
select
1 = SCART connector compatible
2
First Active
Line Select
This bit is ignored unless flicker filtering is enabled. This bit is ignored on the HMP8156.
0 = First line of active video in odd fields is on an odd line number
1 = First line of active video in odd fields is on an even line number
1-0
Flicker Filter
Processing
These bits must be “00” during 8-bit YCbCr and BT.656 input modes, and SIF input resolution
mode. These bits are always “00” on the HMP8156A.
00 = No flicker filtering
01 = reserved
10 = reserved
11 = 3-line flicker filtering enabled
RESET
STATE
1B
0B
1B
0B
0B
0B
00B
TABLE 15. TIMING I/O REGISTER #1
BIT
NUMBER
FUNCTION
SUB ADDRESS = 04H
DESCRIPTION
7
BLANK
Timing Select
This bit is ignored unless BLANK is configured to be an output.
0 = Data for the first active pixel of the scan line must arrive the CLK cycle after the encoder
negates BLANK.
1 = Data for the first active pixel of the scan line must arrive immediately after the encoder ne-
gates BLANK.
6
Reserved
5
BLANK Output Con- 0 = BLANK is an input
trol
1 = BLANK is an output
4
BLANK
Polarity
0 = Active low (low during blanking)
1 = Active high (high during blanking)
3
HSYNC and
VSYNC Output
Control
0 = HSYNC and VSYNC are inputs
1 = HSYNC and VSYNC are outputs
2
HSYNC
Polarity
0 = Active low (low during horizontal sync)
1 = Active high (high during horizontal sync)
1
VSYNC
Polarity
0 = Active low (low during vertical sync)
1 = Active high (high during vertical sync)
0
FIELD
Polarity
0 = Active low (low during odd fields)
1 = Active high (high during odd fields)
RESET
STATE
0B
0B
0B
0B
0B
0B
0B
0B
19
4343.4
November 4, 2005
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