參數(shù)資料
型號(hào): SAA7111
廠商: NXP Semiconductors N.V.
英文描述: Video Input Processor VIP
中文描述: 視頻輸入處理器貴賓
文件頁數(shù): 43/64頁
文件大小: 433K
代理商: SAA7111
1998 May 15
43
Philips Semiconductors
Product specification
Video Input Processor (VIP)
SAA7111
16.2.9
S
UBADDRESS
09
Table 20
Luminance control
Note
1.
Not to be used with bypassed chrominance trap.
FUNCTION
BIT NAME
LOGIC LEVEL
CONTROL BIT
Aperture factor (APER)
Aperture factor = 0
APER1
APER0
APER1
APER0
APER1
APER0
APER1
APER0
0
0
0
1
1
0
1
1
D1
D0
D1
D0
D1
D0
D1
D0
Aperture factor = 0.25
Aperture factor = 0.5
Aperture factor = 1.0
Update time interval for AGC value (UPTCV)
Horizontal update (once per line)
Vertical update (once per field)
UPTCV
UPTCV
0
1
D2
D2
Vertical blanking luminance bypass (VBLB
Active luminance processing
Luminance bypass during vertical blanking
VBLB
VBLB
0
1
D3
D3
Aperture band-pass (centre frequency) (BPSS) D5 and D4
Centre frequency = 4.1 MHz
BPSS1
BPSS0
BPSS1
BPSS0
BPSS1
BPSS0
BPSS1
BPSS0
0
0
0
1
1
0
1
1
D5
D4
D5
D4
D5
D4
D5
D4
Centre frequency = 3.8 MHz; note 1
Centre frequency = 2.6 MHz; note 1
Centre frequency = 2.9 MHz; note 1
Prefilter active (PREF)
Bypassed
Active
PREF
PREF
0
1
D6
D6
Chrominance trap bypass (BYPS)
Chrominance trap active; default for CVBS mode
Chrominance trap bypassed; default for S-Video mode
BYPS
BYPS
0
1
D7
D7
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