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CXD1807Q - CD-G Decoder

Description

The CXD1807Q has functions to decode CD-G commands written in the CD subcode and write them into the DRAM to display them.

It also has a built-in RGB 4-bit D/A converter.

By adding 256K bits of DRAM and a video encoder, a CD graphics system can be configured.

Real-time correction

Features

  • for CAS ↓) Column address hold time (for CAS ↓) Data input setup time (for OE ↑) Data input hold time (for OE ↑) Data output setup time (for WE ↓) Data output hold time (for WE ↓) Symbol Tras Trwc Trcd Tcas Tcwd Twp Toeh Tcod Tasr Trah Tasc Tcah Tdsi Tdhi Tds Tdh 2Tw.
  • 45 Tw.
  • 15 Tw.
  • 35 5Tw 35 0 Tw.
  • 50 Tw.
  • 15 Min. Typ. 7Tw 9Tw 2Tw 5Tw 4Tw Tw Tw 2Tw Max. Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 3. Built-in DAC Character.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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CXD1807Q CD-G Decoder For the availability of this product, please contact the sales office. Description The CXD1807Q has functions to decode CD-G commands written in the CD subcode and write them into the DRAM to display them. It also has a built-in RGB 4-bit D/A converter. By adding 256K bits of DRAM and a video encoder, a CD graphics system can be configured. Functions • Real-time correction of subcode errors • Powerful protection circuit for subcode synchronization • RAM for color look-up table • Compatible with both NTSC and PAL • 4-bit DAC for RGB • 80-pin QFP Applications CD-G decoder Structure Silicon gate CMOS IC Absolute Maximum Ratings (Ta = 25°C) • Supply voltage VDD VSS–0.5 to +7.0 • Input voltage VI VSS–0.5 to VDD +0.5 • Output voltage VO VSS–0.5 to VDD +0.
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