參數(shù)資料
型號(hào)： SAA7188A
廠商： NXP Semiconductors N.V.
英文描述： Digital Video Encoder (DENC2-M)(數(shù)字視頻編碼器(DENC2-M))
中文描述： 數(shù)字視頻編碼器（DENC2米）（數(shù)字視頻編碼器（DENC2米））
文件頁(yè)數(shù)： 15/36頁(yè)
文件大?。?/td> 252K
代理商： SAA7188A
1996 Jul 08
15
Philips Semiconductors
Preliminary specification
Digital Video Encoder (DENC2-M)
SAA7188A
Table 11
Subaddress 5C and 5E
Notes
1.
2.
GAINV =
1.55
×
nominal to +1.55
×
nominal.
GAINV =
1.46
×
nominal to +1.46
×
nominal.
Table 12
Subaddress 5D
Notes
1.
2.
Output black level/IRE = BLCKL
×
25/63 + 24; recommended value: BLCKL = 60 (3CH) normal.
Output black level/IRE = BLCKL
×
26/63 + 24; recommended value: BLCKL = 45 (2DH) normal.
Table 13
Subaddress 5E
Notes
1.
2.
Output black level/IRE = BLNNL
×
25/63 + 17; recommended value: BLNNL = 58 (3AH) normal.
Output black level/IRE = BLNNL
×
26/63 + 17; recommended value: BLNNL = 63 (3FH) normal.
DATA BYTE
DESCRIPTION
CONDITIONS
white-to-black = 92.5 IRE
(1)
GAINV = 0
GAINV = 165 (A5H)
white-to-black = 100 IRE
(2)
GAINV = 0
GAINV = 175 (AFH)
REMARKS
GAINV
variable gain for Cr signal;
input representation
accordance with CCIR 601
output subcarrier of V contribution = 0
output subcarrier of V contribution = nominal
output subcarrier of V contribution = 0
output subcarrier of V contribution = nominal
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)
REMARKS
BLCKL
variable black level; input
representation accordance
with CCIR 601
output black level = 24 IRE
output black level = 49 IRE
output black level = 24 IRE
output black level = 50 IRE
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)
REMARKS
BLNNL
variable blanking level
output blanking level = 17 IRE
output blanking level = 42 IRE
output blanking level = 17 IRE
output blanking level = 43 IRE
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