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SAA7128AH

Digital video encoder

Philips Electronics 

Philips Semiconductors

Digital video encoder

Product specification

SAA7128AH; SAA7129AH

1 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

• Programmable horizontal and vertical input

synchronization phase

• Programmable horizontal sync output phase

• Internal Colour Bar Generator (CBG)

• Macrovision™(1) Pay-per-View copy protection system

rev. 7.01 and rev. 6.1 as option; this applies to

SAA7128AH only. The device is protected by USA

patent numbers 4631603, 4577216 and 4819098 and

other intellectual property rights. Use of the Macrovision

anti-copy process in the device is licensed for

non-commercial home use only. Reverse engineering or

disassembly is prohibited. Please contact your nearest

Philips Semiconductors sales office for more information

• Controlled rise/fall times of output syncs and blanking

• On-chip crystal oscillator (3rd-harmonic or fundamental

crystal)

• Down mode (low output voltage) or power-save mode of

DACs

• QFP44 package.

2 GENERAL DESCRIPTION

The SAA7128AH; SAA7129AH 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.

Through a 54 MHz multiplexed digital D1 input port, the

circuit accepts two ITU-R BT.656 compatible CB-Y-CR

data streams with 720 active pixels per line in

4 : 2 : 2 multiplexed formats. For example, MPEG

decoded data with overlay and MPEG decoded data

without overlay, where one data stream is latched at the

rising, the other one is latched at the falling clock edge.

It includes a sync/clock generator and on-chip DACs.

(1) Macrovision™ is a trademark of the Macrovision Corporation.

3 ORDERING INFORMATION

TYPE NUMBER

SAA7128AH

SAA7129AH

NAME

QFP44

PACKAGE

DESCRIPTION

plastic quad flat package; 44 leads (lead length 1.3 mm);

body 10 × 10 × 1.75 mm

VERSION

SOT307-2

2003 Dec 09

3

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