參數(shù)資料
型號： SAA7121
廠商： NXP SEMICONDUCTORS
元件分類： 顏色信號轉(zhuǎn)換
英文描述： Digital Video Encoder (ConDENC)
中文描述： COLOR SIGNAL ENCODER, PQFP44
封裝： PLASTIC, SOT-307, QFP-44
文件頁數(shù)： 16/32頁
文件大小： 225K
代理商： SAA7121
1997 Jan 06
16
Philips Semiconductors
Preliminary specification
Digital Video Encoder (ConDENC)
SAA7120; SAA7121
Table 15
Subaddress 5D
Notes
1.
2.
Output black level/IRE = BLCKL
×
2/6.29 + 34.0
Output black level/IRE = BLCKL
×
2/6.18 + 31.7
Table 16
Subaddress 5E
Notes
1.
2.
Output black level/IRE = BLNNL
×
2/6.29 + 25.4
Output black level/IRE = BLNNL
×
2/6.18 + 25.9
Table 17
Subaddress 5F
Table 18
Logic levels and function of CCRS
DATA BYTE
DESCRIPTION
CONDITIONS
white-to-sync = 140 IRE
(1)
BLCKL = 0
BLCKL = 63 (3FH)
white-to-sync = 143 IRE
(2)
BLCKL = 0
BLCKL = 63 (3FH)
logic 0
logic 1
REMARKS
BLCKL
variable black level; input
representation
accordance with
“CCIR 601”
recommended value: BLCKL = 42 (2AH)
output black level = 34 IRE
output black level = 54 IRE
recommended value: BLCKL = 35 (23H)
output black level = 32 IRE
output black level = 52 IRE
disable odd/even field control bit from RTCI
enable odd/even field control bit from RTCI
(see Fig.10)
DECOE
real time control
DATA BYTE
DESCRIPTION
CONDITIONS
white-to-sync = 140 IRE
(1)
BLNNL = 0
BLNNL = 63 (3FH)
white-to-sync = 143 IRE
(2)
BLNNL = 0
BLNNL = 63 (3FH)
logic 0
logic 1
REMARKS
BLNNL
variable blanking level
recommended value: BLNNL = 46 (2EH)
output blanking level = 25 IRE
output blanking level = 45 IRE
recommended value: BLNNL = 53 (35H)
output blanking level = 26 IRE
output blanking level = 46 IRE
disable subcarrier phase reset bit from RTCI
enable subcarrier phase reset bit from RTCI
(see Fig.10)
DECPH
real time control
DATA BYTE
DESCRIPTION
BLNVB
CCRS
variable blanking level during vertical blanking interval is typically identical to value of BLNNL
select cross colour reduction filter in luminance; see Table 18
CCRS1
CCRS0
DESCRIPTION
0
0
1
1
0
1
0
1
no cross colour reduction; for overall transfer characteristic of luminance see Fig.3
cross colour reduction #1 active; for overall transfer characteristic see Fig.3
cross colour reduction #2 active; for overall transfer characteristic see Fig.3
cross colour reduction #3 active; for overall transfer characteristic see Fig.3
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SAA7121H 制造商:NXP Semiconductors 功能描述:
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