A2510R-B4

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.