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參數資料
| 型號： | 935264426557 |
| 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： | 8/35頁 |
| 文件大小： | 261K |
| 代理商： | 935264426557 |
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1997 Jan 06
16
Philips Semiconductors
Preliminary specication
Digital Video Encoder (ConDENC)
SAA7120; SAA7121
Table 15 Subaddress 5D
Notes
1. Output black level/IRE = BLCKL
× 2/6.29 + 34.0
2. Output black level/IRE = BLCKL
× 2/6.18 + 31.7
Table 16 Subaddress 5E
Notes
1. Output black level/IRE = BLNNL
× 2/6.29 + 25.4
2. 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
REMARKS
BLCKL
variable black level; input
representation
accordance with
“CCIR 601”
white-to-sync = 140 IRE(1)
recommended value: BLCKL = 42 (2AH)
BLCKL = 0
output black level = 34 IRE
BLCKL = 63 (3FH)
output black level = 54 IRE
white-to-sync = 143 IRE(2)
recommended value: BLCKL = 35 (23H)
BLCKL = 0
output black level = 32 IRE
BLCKL = 63 (3FH)
output black level = 52 IRE
DECOE
real time control
logic 0
disable odd/even eld control bit from RTCI
logic 1
enable odd/even eld control bit from RTCI
(see Fig.10)
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
BLNNL
variable blanking level
white-to-sync = 140 IRE(1)
recommended value: BLNNL = 46 (2EH)
BLNNL = 0
output blanking level = 25 IRE
BLNNL = 63 (3FH)
output blanking level = 45 IRE
white-to-sync = 143 IRE(2)
recommended value: BLNNL = 53 (35H)
BLNNL = 0
output blanking level = 26 IRE
BLNNL = 63 (3FH)
output blanking level = 46 IRE
DECPH
real time control
logic 0
disable subcarrier phase reset bit from RTCI
logic 1
enable subcarrier phase reset bit from RTCI
(see Fig.10)
DATA BYTE
DESCRIPTION
BLNVB
variable blanking level during vertical blanking interval is typically identical to value of BLNNL
CCRS
select cross colour reduction lter in luminance; see Table 18
CCRS1
CCRS0
DESCRIPTION
0
no cross colour reduction; for overall transfer characteristic of luminance see Fig.3
0
1
cross colour reduction #1 active; for overall transfer characteristic see Fig.3
1
0
cross colour reduction #2 active; for overall transfer characteristic see Fig.3
1
cross colour reduction #3 active; for overall transfer characteristic see Fig.3
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