SAA7121H/V2,557 Trident Microsystems, Inc., SAA7121H/V2,557 Datasheet - Page 21

• Manufacturer Part Number: SAA7121H/V2,557
• Manufacturer: Trident Microsystems, Inc.

Specifications of SAA7121H/V2,557

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Philips Semiconductors
Table 39 Subaddresses 7EH and 7FH
In subaddresses 5BH, 5CH, 5DH, 5EH and 62H all IRE values are rounded up.
7.10
Table 40 Slave transmitter (slave address 89H or 8DH)
Table 41 No subaddress
2002 Oct 11
LINE
Status byte
VER
CCRDO
CCRDE
FSEQ
O_E
DATA BYTE
DATA BYTE
REGISTER
FUNCTION
Digital video encoder
Slave transmitter
individual lines in both fields (PAL counting) can be disabled for insertion of teletext by the respective
bits, disabled line = LINExx (50 Hz field rate); this bit mask is effective only, if the lines are enabled by
TTXOVS/TTXOVE and TTXEVS/TTXEVE
SUBADDRESS
LOGIC LEVEL
1
0
1
0
1
0
version identification of the device: it will be changed with all versions of the IC that
have different programming models; current version is 001 binary
closed caption bytes of the odd field have been encoded
the bit is reset after information has been written to the subaddresses
67H and 68H; it is set immediately after the data has been encoded
closed caption bytes of the even field have been encoded
the bit is reset after information has been written to the subaddresses
69H and 6AH; it is set immediately after the data has been encoded
state of the internal field sequence counter, with bit O_E as LSB
(repetition rate: NTSC = 4 fields, PAL = 8 fields)
during even field
during odd field
VER2
D7
VER1
D6
21
VER0
DESCRIPTION
D5
CCRDO CCRDE
DESCRIPTION
D4
DATA BYTE
SAA7120H; SAA7121H
D3
FSEQ2
D2
Product specification
FSEQ1
D1
O_E
D0