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SAA7127H

Digital video encoder

Philips Electronics 

Philips Semiconductors

Digital video encoder

Product specification

SAA7126H; SAA7127H

1 FEATURES

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

• Digital PAL/NTSC 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)

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

(CSYNC, VBS), RED (CR, C), GREEN (Y, VBS) and

BLUE (CB, CVBS) two times oversampled (signals in

parenthesis are optionally). RED (CR), GREEN (Y) and

BLUE (CB) signal outputs with 9-bit resolution, whereas

all other signal outputs have 10-bit resolution; CSYNC is

an advanced composite sync 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

the 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 (CCIR line count)

• 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; ‘handsfree’ Macrovision

pulse support through on-chip timer for pulse amplitude

modulation; this applies to SAA7126H 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 SAA7126H; SAA7127H encodes digital CB-Y-CR

video data to an NTSC or PAL CVBS or S-video signal.

Simultaneously, RGB or bypassed but interpolated

CB-Y-CR signals are available via three additional

Digital-to-Analog Converters (DACs). The circuit at a

54 MHz multiplexed digital D1 input port accepts two CCIR

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, whereas one data stream is latched at the

rising, the other one 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

SAA7126H

SAA7127H

NAME

QFP44

PACKAGE

DESCRIPTION

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

body 10 × 10 × 1.75 mm

VERSION

SOT307-2

2002 Oct 15

3

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