參數(shù)資料
型號: 935262922557
廠商: NXP SEMICONDUCTORS
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP160
封裝: PLASTIC, SOT-322, QFP-160
文件頁數(shù): 142/147頁
文件大小: 526K
代理商: 935262922557
1998 Apr 09
94
Philips Semiconductors
Product specication
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
Table 81 HPS, horizontal ne-scale
7.12.7
BCS
Table 82 BCS control
Table 83 Luminance brightness control
Table 84 Luminance contrast control
OFFSET
(HEX)
NAME
BIT
TYP.
DESCRIPTION
6C
XIM
31
RW
horizontal interpolation mode:
0: normal mode, sample phase is calculated for every qualified
sample
1: fixed phase, sample phase is fixed to the value set by XP
XP
30 to 24
RW
start phase for horizontal ne scaling XP = PHOP × 128
(PHOP represents a phase offset with values between ‘0’ and ‘1’,
where the ‘1’ represents a distance between two consecutive
pixels of the input pattern)
XSCI
23 to 12
RW
X Scaler Increment for ne (phase correct) scaling in
horizontal pixel phase arithmetic:
XSCI = INT [(NIP/NOP) × 1024/(SPSC + 1)]
NOP = number of output pixels
NIP = number of qualified scaler input pixels.
HXO
11 to 0
RW
horizontal offset (horizontal start) of input source for HPS, counted
in qualied pixels with PXQ, after selected horizontal sync edge.
OFFSET
(HEX)
NAME
BIT
TYPE
DESCRIPTION
70
BRIG
31 to 24
RW
luminance brightness control; see Table 83
CONT
23 to 16
RW
luminance contrast control; see Table 84
15 to 8
reserved
SATN
7 to 0
RW
chrominance saturation control; see Table 85
D7
D6
D5
D4
D3
D2
D1
D0
GAIN
11111111
255 (bright)
10000000
128 (CCIR level)
00000000
0 (dark)
D7
D6
D5
D4
D3
D2
D1
D0
GAIN
01111111
1.999 (max. contrast)
01000000
1 (CCIR level)
00000000
0 (luminance off)
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