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參數(shù)資料
| 型號： | 935264425551 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顏色信號轉換 |
| 英文描述： | COLOR SIGNAL ENCODER, PQFP44 |
| 封裝： | PLASTIC, SOT-307, QFP-44 |
| 文件頁數(shù)： | 7/35頁 |
| 文件大?。?/td> | 261K |
| 代理商： | 935264425551 |
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1997 Jan 06
15
Philips Semiconductors
Preliminary specication
Digital Video Encoder (ConDENC)
SAA7120; SAA7121
Table 11 Subaddress 3A
Table 12 Subaddress 5A
Remark: in subaddresses 5B, 5C, 5D, 5E and 62 all IRE values are rounded up.
Table 13 Subaddress 5B and 5D
Table 14 Subaddress 5C and 5E
DATA BYTE
LOGIC
LEVEL
DESCRIPTION
UV2C
0
Cb, Cr data are two’s complement
1
Cb, Cr data are straight binary; default after reset
Y2C
0
Y data is two’s complement
1
Y data is straight binary; default after reset
SYMP
0
horizontal and vertical trigger is taken from RCV2 and RCV1 respectively; default after reset
1
horizontal and vertical trigger is decoded out of
“CCIR 656” compatible data at MP port
CBENB
0
data from input ports is encoded; default after reset
1
colour bar with xed colours is encoded
DATA BYTE
DESCRIPTION
VALUE
RESULT
CHPS
phase of encoded colour subcarrier
(including burst) relative to horizontal sync;
can be adjusted in steps of
360/256 degrees
3FH
PAL-B/G and data from input ports
69H
PAL-B/G and data from look-up table
67H
NTSC-M and data from input ports
89H
NTSC-M and data from look-up table
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
GAINU
variable gain for
Cb signal; input
representation
accordance with
“CCIR 601”
white-to-black = 92.5 IRE
GAINU =
2.17 × nominal to +2.16 × nominal
GAINU = 0
output subcarrier of U contribution = 0
GAINU = 118 (76H)
output subcarrier of U contribution = nominal
white-to-black = 100 IRE
GAINU =
2.05 × nominal to +2.04 × nominal
GAINU = 0
output subcarrier of U contribution = 0
GAINU = 125 (7DH)
output subcarrier of U contribution = nominal
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
GAINV
variable gain for
Cr signal; input
representation
accordance with
“CCIR 601”
white-to-black = 92.5 IRE
GAINV =
1.55 × nominal to +1.55 × nominal
GAINV = 0
output subcarrier of V contribution = 0
GAINV = 165 (A5H)
output subcarrier of V contribution = nominal
white-to-black = 100 IRE
GAINV =
1.46 × nominal to +1.46 × nominal
GAINV = 0
output subcarrier of V contribution = 0
GAINV = 175 (AFH)
output subcarrier of V contribution = nominal
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