參數(shù)資料
型號(hào): SAA7152
廠(chǎng)商: NXP SEMICONDUCTORS
元件分類(lèi): 信號(hào)分離
英文描述: Digital Video Comb Filter DCF
中文描述: Y/C SEPARATOR IC, PQCC44
封裝: PLASTIC, MO-047AC, SOT-187-2, LCC-44
文件頁(yè)數(shù): 8/15頁(yè)
文件大?。?/td> 77K
代理商: SAA7152
August 1996
8
Philips Semiconductors
Product specification
Digital Video Comb Filter (DCF)
SAA7152
Table 1
I
2
C-bus; subaddress and data bytes for writing (after X = 0 in address byte)
Function of the bits of Table 1:
FUNCTION
SUBADDRESS
DATA
D7
D6
D5
D4
D3
D2
D1
D0
Controls
00
BYPS
CSEL
CCMB
YCMB
TAPS
CFRQ
NLIN
LLEN
BYPS
Select bypass with a short delay; all other
functions are disabled:
0 = no bypass
1 = comb filter bypassed (delay is 3 LLC)
0 = CVBS selected
1 = Y/C selected
0 = chrominance is bandpassed
1 = chrominance is comb-filtered
0 = disabled, CVBS/Y signal is only low-passed
1 = enabled (chrominance trap or comb filtering)
0 = for bandpass/low-pass combination
1 = for comb filter active
0 = 4.43 MHz
1 = 3.58 MHz
0 = 4-line comb filter for standard PAL
1 = 2-line filter for standard NTSC
0 = 1728 clocks (625 lines; 50 Hz)
1 = 1716 clocks (525 lines; 60 Hz)
CSEL
Input mode select:
CCMB
Select comb filtering
YCMB
Enable chrominance substruction from
CVBS signal:
TAPS
Selects tap for switching Y and C to
adder:
CFRQ
Select centre frequency and matching
factor of chrominance filter:
NLIN
Select delay (number of lines):
LLEN
Selects the number of clocks for each
line delay:
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