參數(shù)資料
型號(hào)： 935262321518
廠商： NXP SEMICONDUCTORS
元件分類： 顏色信號(hào)轉(zhuǎn)換
英文描述： COLOR SIGNAL ENCODER, PQFP44
封裝： PLASTIC, QFP-44
文件頁(yè)數(shù)： 10/43頁(yè)
文件大小： 193K
代理商： 935262321518
1999 May 31
18
Philips Semiconductors
Product specication
Digital video encoder
SAA7126H; SAA7127H
Table 24 Subaddress 62BH
Table 25 Subaddresses 63H to 66H (four bytes to program subcarrier frequency)
Note
1. Examples:
a) NTSC-M: ffsc = 227.5, fllc = 1716 → FSC = 569408543 (21F07C1FH).
b) PAL-B/G: ffsc = 283.7516, fllc = 1728 → FSC = 705268427 (2A098ACBH).
Table 26 Subaddresses 67H to 6AH
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
recommended value:
BSTA = 63 (3FH)
BSTA = 0 to 2.02
× nominal
white-to-black = 92.5 IRE;
burst = 40 IRE; PAL encoding
recommended value:
BSTA = 45 (2DH)
BSTA = 0 to 2.82
× nominal
white-to-black = 100 IRE;
burst = 43 IRE; NTSC encoding
recommended value:
BSTA = 67 (43H)
BSTA = 0 to 1.90
× nominal
white-to-black = 100 IRE;
burst = 43 IRE; PAL encoding
recommended value:
BSTA = 47 (2FH); default after
reset
BSTA = 0 to 3.02
× nominal
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
FSC0 to FSC3
ffsc = subcarrier frequency
(in multiples of line
frequency); fllc = clock
frequency (in multiples of
line frequency)
;
note 1
FSC3 = most signicant byte;
FSC0 = least signicant byte
DATA BYTE
DESCRIPTION
REMARKS
L21O0
rst byte of captioning data, odd eld
LSBs of the respective bytes are encoded
immediately after run-in and framing code, the
MSBs of the respective bytes have to carry the
parity bit, in accordance with the denition of
line 21 encoding format.
L21O1
second byte of captioning data, odd eld
L21E0
rst byte of extended data, even eld
L21E1
second byte of extended data, even eld
FSC
round
f
fsc
f
llc
--------
2
32
×
=
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