SAF7129AH Ver la hoja de datos (PDF) - NXP Semiconductors.

Número de pieza

componentes Descripción

Lista de partido

SAF7129AH

Digital video encoder

NXP Semiconductors. 

Philips Semiconductors

Digital video encoder

Product specification

SAF7129AH

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 centreing

• 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)

• 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 SAF7129AH 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, an 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.

3 ORDERING INFORMATION

TYPE NUMBER

SAF7129AH

NAME

QFP44

PACKAGE

DESCRIPTION

plastic quad flat package; 44 leads (lead length 1.6 mm);

body 10 × 10 × 2 mm

VERSION

SOT803-1

2004 Mar 16

3

Share Link: