GENERAL DESCRIPTION

MPEG1 audio and video CD (VCD) decoder, intended for use in low-cost dedicated video CD players. When used with a 4 Mbit DRAM and a digital video encoder, the decoder adds the required functionality to a CD decoder to implement a low-cost video CD player capable of playing discs coded to version 2.0 of the video CD specification. The SAA2510 is an I2C-bus controlled chip and features serial data input in four common bus formats. It provides digital video output in CCIR601 and 656 formats.

FEATURES

(With standard microcode loaded)

• Decoding and display of MPEG1 video streams (constrained parameters)

• Decoding of MPEG audio streams (layer II)

• Decoding, storage (compressed) and display of high-resolution still pictures of 704 × 576 pixels

• Requires only 4 Mbits of external 70 ns DRAM

• Audio transparency mode for CD-DA discs

• On-screen display capability

• Play options:

– Play

– Stop

– Pause/continue

– Slow-motion forward

– Scan forward

– Scan backward.

• Supports auto-pause feature

• Disc interface: Philips I2S, EIAJ, MEC formats and IEC 958 (EBU) interface

• Separate error flag input (EFIN) and data valid input (NDAV)

• Performs basic block decoder functions:

– serial-to-parallel conversion

– sync detection

– descrambling

– EDC calculation

– error-correction for mode 2 form 1 sectors

– header and sub-header interpretation.

• I2C-bus interface

• Video output YUV 4 : 2 : 2 format. DMSD bus compatible

• Also supports CCIR656 video interface, including line and field timing codes

• Audio output: 44.1 kHz. 16, 18 or 20 bits per audio sample in Philips I2S, Sony or MEC formats

• EBU audio output, fully transparent from input to output in CD-DA mode and generated in MPEG mode

• Downloadable microcode for internal controllers

• Internal video timing generator

• Requires 40 MHz crystal for system clock generation

• Requires 27 MHz crystal or external 27 MHz source for video timing generation

• Requires 16.9344 MHz (384 × 44.1 kHz) clock locked to CD drive

• Internal generation of 90 kHz MPEG clock

• Capability of sharing external DRAM by 3-stating all DRAM pins.

APPLICATION

• Dedicated video CD players.