LC74201E中文资料三洋数据手册PDF规格书

Overview

The LC74201E is a CMOS LSI that reduces the signal processing functions required of a video CD decoder to a single chip. All that it takes to make a version 1 or version 2 video CD player is the addition of a CD digital signal processor, DRAM, an audio D/A converter, digital video encoder, and similar components.

特性 Features

• Incorporation of virtually almost all the functionality required by a video CD player from the CD-ROM decoder through to the MPEG audio and video decoders in a single chip

• Fully automatic playback with automatic decoding within the LSI in response to simple external commands and the MPEG bit stream

• Special playback functions are activated by command inputs, and do not require signal processing by the host microcomputer

• Support for two external DRAM configurations: 4 M bits (256k × 16 bits) or 4 M bits (256k × 16 bits) + 1 M bit (64k × 16 bits)

• Support for a Track 1 DRAM user area (i.e., sector buffer) of up to 8 k bytes (4 M bits of external DRAM) or 22 k bytes (5 M bits of external DRAM)

• Automatic synchronization of audio and video

• Built-in high-speed decoder core that supports variablespeed video playback at up to quadruple speed. Audio support for normal and double-speed playback.

• Internal registers that offer configuration settings for connecting to most commercially available CD digital signal processors and D/A converters

• Compatible with version 2 of the video CD standard. Support for superimposition of closed caption data on the output signal as specified in the EIA608 standard

• Support for Photo CD standard. (Base/4 and Base/16)