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參數(shù)資料
| 型號： | 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）） |
| 文件頁數(shù)： | 17/36頁 |
| 文件大?。?/td> | 252K |
| 代理商： | SAA7188A |
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1996 Jul 08
17
Philips Semiconductors
Preliminary specification
Digital Video Encoder (DENC2-M)
SAA7188A
Table 16
Subaddress 62
Notes
1.
2.
3.
4.
Recommended value: BSTA = 102 (66H).
Recommended value: BSTA = 72 (48H).
Recommended value: BSTA = 106 (6AH).
Recommended value: BSTA = 75 (4BH).
Table 17
Subaddress 63 to 66 (four bytes to program subcarrier frequency)
Note
1.
Examples:
a) NTSC-M: f
sc
= 227.5, f
LLC
= 1716
→
FSC = 569408543 (21F07C1FH).
b) PAL-B/G: f
sc
= 283.7516, f
LLC
= 1728
→
FSC = 705268427 (2A098ACBH).
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
BSTA
amplitude of colour burst;
input representation
accordance with
CCIR 601
white-to-black = 92.5 IRE;
burst = 40 IRE; NTSC encoding
BSTA = 0 to 1.25
×
nominal
(1)
white-to-black = 92.5 IRE;
burst = 40 IRE; PAL encoding
BSTA = 0 to 1.76
×
nominal
(2)
white-to-black = 100 IRE;
burst = 43 IRE; NTSC encoding
BSTA = 0 to 1.20
×
nominal
(3)
white-to-black = 100 IRE;
burst = 43 IRE; PAL encoding
BSTA = 0 to 1.67
×
nominal
(4)
logic 0
SQP
subcarrier real time
control from SAA7151B digital
colour decoder
not supported in current version,
do not use
logic 1
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
FSC0 to FSC3 f
sc
= subcarrier frequency
(in multiples of line
frequency);
f
LLC
= clock frequency (in
multiples of line frequency)
see note 1
FSC3 = most significant byte
FSC0 = least significant byte
FSC
round
f
LLC
f
2
32
×
=
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