參數(shù)資料
型號: SAA7183
廠商: NXP Semiconductors N.V.
英文描述: Digital Video Encoder EURO-DENC
中文描述: 數(shù)字視頻編碼器歐元,DENC
文件頁數(shù): 18/40頁
文件大?。?/td> 268K
代理商: SAA7183
1996 Jul 08
18
Philips Semiconductors
Preliminary specification
Digital Video Encoder (EURO-DENC)
SAA7182; SAA7183
Table 16
Subaddress 62A
Table 17
Subaddress 62B
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 18
Subaddress 63 to 66 (four bytes to program subcarrier frequency)
Note
1.
Examples:
a) NTSC-M: f
fsc
= 227.5, f
llc
= 1716
FSC = 569408543 (21F07C1FH).
b) PAL-B/G: f
fsc
= 283.7516, f
llc
= 1728
FSC = 705268427 (2A098ACBH).
c) SECAM: f
fsc
= 274.304, f
llc
= 1728
FSC = 681786290 (28A33BB2H).
DATA BYTE
LOGIC LEVEL
DESCRIPTION
RTCE
0
1
no real time control of generated subcarrier frequency
real time control of generated subcarrier frequency through SAA7151B or SAA7111
(timing see Fig.16)
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
BSTA
amplitude of colour burst;
input representation in
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)
fixed burst amplitude with SECAM encoding
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
FSC0 to FSC3 f
fsc
= 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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