MCD221

Pinout




Specifications

Symbol	Parameter	Min	Max	Unit
VDD	Supply Voltage	0.5	+ 7.0	V
VI	Input Voltage	-1.5	VDD + 1.5	V
VO	Output Voltage	-0.5	VDD + 0.5	V
IO	Output Current	-	± 25	mA
Pd	Power Dissipation	-	1200	mW
Tstg	Storage Temperature	-65	+150	°C

* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the limits in the Electrical Characteristics tables or Pin Descriptions section.

Description

This technical summary provides a brief description of the MCD221 CDInterface and Audio Processor. A complete data sheet for the MCD221 is available and can be ordered from your local Motorola sales office. The order number is MCD221/D.

The MCD221 has two main functions. The first is to form an interface between a CD drive unit and a CDi or PhotoCD player. The connection to the drive is designed for both applications and can be either a Digital Out (EBU
standard) interface, or an I²S plus subcode interface. The host interface can be either a 68000 interface for CDi players, or a serial (SPI) interface for PhotoCD.

The second function of the MCD221 is to decode ADPCM (CDi base case) audio, to perform audio mixing functions as specified in the Green Book, and to be able to add external audio to the base case audio. The MCD221 can also be
used for handling the ADPCM decoding for PhotoCD.

The main features of the MCD221 are as follows:
• Accepts Audio Inputs in I₂S Format (MPEG1) for Mixing with CIAP Internal Audio
• Output Can Be Either I₂S or SONY Format
• Data Input Rate Can Be Up to 2 Times Normal Speed
• Can Connect to a Host via Either a 68K or Serial Interface
• 80Pin Quad Flat Pack (QFP)