saa7120 NXP Semiconductors, saa7120 Datasheet - Page 22

• Manufacturer Part Number: saa7120
• Description: Digital Video Encoder Condenc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 40 Subaddress 7E and 7F
Slave Transmitter
Table 41 Slave transmitter (slave address 89H or 8DH)
Table 42 No subaddress
1997 Jan 06
LINE
Status byte
VER
CCRDO
CCRDE
FSEQ
O_E
DATA BYTE
DATA BYTE
REGISTER
FUNCTION
Digital Video Encoder (ConDENC)
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)
LOGIC
LEVEL
SUBADDRESS
this bit mask is effective only, if the lines are enabled by TTXOVS/TTXOVE and TTXEVS/TTXEVE
1
0
1
0
1
0
1
0
Version identification of the device. It will be changed with all versions of the device that
have different programming models. Current version is 000 binary.
Closed caption bytes of the odd field have been encoded.
The bit is reset after information has been written to the subaddresses 67 and 68. 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 69 and 6A. It is set
immediately after the data has been encoded.
During first field of a sequence (repetition rate: NTSC = 4 fields, PAL = 8 fields).
Not first field of a sequence.
During even field.
During odd field.
VER2
D7
VER1
D6
22
VER0
DESCRIPTION
D5
DESCRIPTION
CCRDO CCRDE
DATA BYTE
D4
D3
SAA7120; SAA7121
D2
0
Preliminary specification
FSEQ
D1
O_E
D0