參數(shù)資料
型號： 935262321518
廠商： NXP SEMICONDUCTORS
元件分類： 顏色信號轉(zhuǎn)換
英文描述： COLOR SIGNAL ENCODER, PQFP44
封裝： PLASTIC, QFP-44
文件頁數(shù)： 14/43頁
文件大小： 193K
代理商： 935262321518
1999 May 31
21
Philips Semiconductors
Product specication
Digital video encoder
SAA7126H; SAA7127H
Table 35 Subaddress 6FH
Table 36 Logic levels and function of CCEN
Table 37 Subaddresses 70H to 72H
Table 38 Subaddress 73H
Table 39 Subaddress 74H
DATA BYTE
LOGIC
LEVEL
DESCRIPTION
CCEN
enables individual line 21 encoding; see Table 36
TTXEN
0
disables teletext insertion; default after reset
1
enables teletext insertion
SCCLN
selects the actual line, where closed caption or extended data are encoded;
line = (SCCLN + 4) for M-systems; line = (SCCLN + 1) for other systems
DATA BYTE
DESCRIPTION
CCEN1
CCEN0
0
line 21 encoding off; default after reset
0
1
enables encoding in eld 1 (odd)
1
0
enables encoding in eld 2 (even)
1
enables encoding in both elds
DATA BYTE
DESCRIPTION
RCV2S
start of output signal on RCV2 pin
values above 1715 (FISE = 1) or [1727 (FISE = 0)] are not allowed; rst active pixel at analog
outputs (corresponding input pixel coinciding with RCV2) at RCV2S = 11AH [0FDH]
RCV2E
end of output signal on RCV2 pin
values above 1715 (FISE = 1) or [1727 (FISE = 0)] are not allowed; last active pixel at analog
outputs (corresponding input pixel coinciding with RCV2) at RCV2E = 694H (687H)
DATA BYTE
DESCRIPTION
REMARKS
TTXHS
start of signal on pin TTXRQ; see Fig.14
PAL: TTXHS = 42H
NTSC: TTXHS = 54H
DATA BYTE
DESCRIPTION
REMARKS
TTXHL
length of TTXRQ window; only active at old TTX protocol:
bit TTXO = 1
TTXHL = 0: TTXRQ = 1398LLC;
TTXHL = 15: TTXRQ = 1413LLC
TTXHD
indicates the delay in clock cycles between rising edge of TTXRQ
output and valid data at pin TTX
minimum value: TTXHD = 2
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