GENERAL DESCRIPTION

The SAA7128H; SAA7129H encodes digital CB-Y-CR video data to an NTSC, PAL or SECAM CVBS or S-video signal. Simultaneously, RGB or bypassed but interpolated CB-Y-CR signals are available via three additional DACs.

FEATURES

• Monolithic CMOS 3.3 V device, 5 V I2C-bus optional

• Digital PAL/NTSC/SECAM encoder

• System pixel frequency 13.5 MHz

• 54 MHz double-speed multiplexed D1 interface capable

of splitting data into two separate channels (encoded

and baseband)

• Three Digital-to-Analog Converters (DACs) for CVBS

(CSYNC), VBS (CVBS) and C (CVBS) two times

oversampled with 10-bit resolution (signals in brackets

optional)

• Three DACs for RED (CR), GREEN (Y) and BLUE (CB)

two times oversampled with 9-bit resolution (signals in

brackets optional)

• Alternatively, an advanced composite sync is available

on the CVBS output for RGB display centring

• Real-time control of subcarrier

• Cross-colour reduction filter

• Closed captioning encoding and World Standard

Teletext (WST) and North-American Broadcast Text

System (NABTS) teletext encoding including sequencer

and filter

• Copy Generation Management System (CGMS)

encoding (CGMS described by standard CPR-1204 of

EIAJ); 20 bits in lines 20/283 (NTSC) can be loaded via

I2C-bus

• Fast I2C-bus control port (400 kHz)

• Line 23 Wide Screen Signalling (WSS) encoding

• Video Programming System (VPS) data encoding in

line 16 (50/625 lines counting)

• Encoder can be master or slave (Continue ...)