參數(shù)資料
型號(hào): 935262451518
廠商: NXP SEMICONDUCTORS
元件分類: 顏色信號(hào)轉(zhuǎn)換
英文描述: COLOR SIGNAL DECODER, PQFP100
封裝: 14 X 14 X 1.40 MM, PLASTIC, SOT-407, LQFP-100
文件頁數(shù): 28/144頁
文件大?。?/td> 592K
代理商: 935262451518
2000 Mar 15
123
Philips Semiconductors
Preliminary specication
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb lter, VBI-data slicer and high performance scaler
SAA7114H
15.5.9
SUBADDRESSES A0H TO A2H
Table 111 Horizontal prescaling; register set A (A0H[5:0]) and B (D0H[5:0])
Table 112 Accumulation length; register set A (A1H[5:0]) and B (D1H[5:0])
Table 113 Prescaler DC gain and FIR prelter control; register set A (A2H[3:0]) and B (D2H[3:0])
X = don’t care.
HORIZONTAL INTEGER PRESCALING RATIO (XPSC)
CONTROL BITS D5 TO D0
XPSC5 XPSC4 XPSC3 XPSC2 XPSC1 XPSC0
Not allowed
000000
Down-scale = 1
000001
Down-scale = 1
2
000010
...
Down-scale = 1
63
111111
HORIZONTAL PRESCALER ACCUMULATION
SEQUENCE LENGTH (XACL)
CONTROL BITS D5 TO D0
XACL5 XACL4 XACL3 XACL2 XACL1 XACL0
Accumulation length = 1
000000
Accumulation length = 2
000001
...
Accumulation length = 64
111111
PRESCALER DC GAIN
CONTROL BITS D3 TO D0
XC2_1
XDCG2
XDCG1
XDCG0
Prescaler output is renormalized by gain factor = 1
X
0
Prescaler output is renormalized by gain factor = 1
2
X0
0
1
Prescaler output is renormalized by gain factor = 1
4
X0
1
0
Prescaler output is renormalized by gain factor = 1
8
X0
1
Prescaler output is renormalized by gain factor = 1
16
X1
0
Prescaler output is renormalized by gain factor = 1
32
X1
0
1
Prescaler output is renormalized by gain factor = 1
64
X1
1
0
Prescaler output is renormalized by gain factor = 1
128
X1
1
Weighting of all accumulated samples is factor ‘1’;
e.g. XACL = 4
sequence 1 + 1+1+1+1
0X
X
Weighting of samples inside sequence is factor ‘2’;
e.g. XACL = 4
sequence 1 + 2+2+2+1
1X
X
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