參數(shù)資料
型號: 935242220557
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP208
封裝: PLASTIC, SOT-316, SQFP-208
文件頁數(shù): 140/148頁
文件大?。?/td> 692K
代理商: 935242220557
1998 Apr 09
91
Philips Semiconductors
Product specication
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
Table 73 HPS, vertical scale and gain
Table 74 Prelter selection for luminance component Y
OFFSET
(HEX)
NAME
BIT
TYPE
DESCRIPTION
64
PFY
31 to 28
RW
prelter selection for luminance component Y:
H(z) = H1(z)
× H2(z) × H3(z)
H1, H3 = 1 + z1
H2 =1+A
× z1 +z2
see Table 74
PFUV
27 to 24
RW
prelter selection for colour difference signals UV:
H(z) = H1(z)
× H2(z) × H3(z)
H1 =1+z1
H2 =1+A
× z1 +z2
H3 =1+z2
see Table 75
23 to 19
reserved
DCGY
18 to 16
RW
DC gain control of Y scaler:
Dependent on active coefcients and the sequence length, the
amplitude gain has to be renormalized.
Gain factor = 2 (DCGY + 1); see Table 76. The resulting factor is a
function of CYi and DCGY. The resulting weight factor = 0 for
CYAi = CYBi = 0 or CYAi = CYBi = 1 or DCGY >5 otherwise
weight = weighting factor/gain factor; see Table 77.
CYA
15 to 8
RW
Coefcient select for Y (vertical) processing in accumulation mode.
For improvement of vertical ltering the accumulated lines can be
weighted. Weighting factor = 2(2
× CYBi + CYAi 1); see Table 78.
CYB
7 to 0
RW
PFY1
PFY0
PFY1
PFY0
H1
H2
H3
A
X
0
bypass
X
0
1
active
bypass
X
1
0
active
bypass
active
X
0011
active
2
0111
active
bypass
15
16
1011
active
bypass
active
7
8
1111
active
3
4
相關PDF資料
PDF描述
935260698551 SPECIALTY CONSUMER CIRCUIT, PQFP160
935260698557 SPECIALTY CONSUMER CIRCUIT, PQFP160
935260699551 SPECIALTY CONSUMER CIRCUIT, PQFP208
935260699557 SPECIALTY CONSUMER CIRCUIT, PQFP208
935243450551 COLOR SIGNAL ENCODER, PQFP44
相關代理商/技術參數(shù)
參數(shù)描述
935245650125 制造商:NXP Semiconductors 功能描述:Inverter 1-Element CMOS 5-Pin TSSOP T/R
935248-90 制造商:JANCO 功能描述:935248-90
9-3525-012 制造商:KEYSTONE 功能描述:MODIFIED 3525,VERSION E
935252-5 制造商:C-H 功能描述:935252-5
935257650112 制造商:NXP Semiconductors 功能描述:SUB ONLY ICSUBS TO 935257650112