Section 14 Serial Codec Interface; Overview; Features - Hitachi HD64465 User Manual

Section 14 Serial CODEC Interface

14.1

Overview

This serial CODEC interface provides an interface between the system and the CODEC that is
CS4218 or CS4271 or compatible with AC97. The major functions of the interface are transmitting
D/A data from system to CODEC and receiving A/D data from CODEC to system.
14.1.1

Features

• Support for CS4218,CS4271 and AC97 Version1.03 and 2.0 CODECs
• Full-duplex data transfer between CODEC and this interface
• Both PIO and DMA modes are supported for communication with system
• Provides SM3 Slave mode for communication with CS4218 or CS4271, and SM3 Master mode
for CS4218 only
Rev. 3.0, 03/01, page 181 of 390