SAA7120H Datasheet, PDF (13/36 Pages) NXP Semiconductors – Digital video encoder

Philips Semiconductors
Digital video encoder
Product specification
SAA7120H; SAA7121H
Table 8 Subaddresses 2AH to 2DH
DATA BYTE
CGO0
CGO1
CGE0
CGE1
DESCRIPTION
REMARKS
first byte of copy guard data, odd field
LSBs of the respective bytes are encoded
second byte of copy guard data, odd field ^{immediately after run-in and framing code,}
first byte of copy guard data, even field
the MSBs of the respective bytes have to
carry the parity bit, in accordance with the
second byte of copy guard data, even field _{definition of line 20 encoding format}
Table 9 Subaddress 2EH
DATA BYTE
CCEN1
0
0
1
1
CCEN0
0
1
0
1
DESCRIPTION
copy guard encoding off
enables encoding in field 1 (odd)
enables encoding in field 2 (even)
enables encoding in both fields
Table 10 Subaddress 3AH
DATA BYTE
UV2C
Y2C
SYMP
LOGIC
LEVEL
0
1
0
1
0
1
CBENB
0
1
DESCRIPTION
C_B, C_R data are twos complement
C_B, C_R data are straight binary; default after reset
Y data is twos complement
Y data is straight binary; default after reset
horizontal and vertical trigger is taken from RCV2 and RCV1 respectively; default after
reset
horizontal and vertical trigger is decoded out of “CCIR 656” compatible data at MP port
data from input ports is encoded; default after reset
colour bar with fixed colours is encoded
Table 11 Subaddress 5AH
DATA BYTE
DESCRIPTION
CHPS
phase of encoded colour subcarrier
(including burst) relative to horizontal
sync; can be adjusted in steps of
360/256 degrees
VALUE
00H
2AH
88H
AAH
RESULT
PAL-B/G and data from input ports
PAL-B/G and data from look-up table
NTSC-M and data from input ports
NTSC-M and data from look-up table
2002 Oct 11
13