Register Description; Table 14.1 Pin Function Of Serial Codec Interface Module; Table 14.2 Registers Of Scdi - Hitachi HD64465 User Manual

Table 14.1 Pin Function of Serial CODEC Interface Module

Name I/O
ACCLK O
SIBCLK I/O
SIBDIN I
SIBDOUT O
SIBSYNC I/O
ACIRQ#/ I/O/O
ACPD#/
PME#
ACRST# O
14.2

Register Description

This Serial CODEC interface contains registers shown in the table below.

Table 14.2 Registers of SCDI

Register or Buffer Function
TDR Transmit Data Register for CS4218 or CS4271 32 bits
RDR Receive Data Register for CS4218 or CS4271
CR Control Register
SR Status Register for CS4218 or CS4271
FSR Frequency Select Register for CS4218
CAR Command Address Register
CDR Command Data Register
PCML PCM Left channel data
PCMR PCM Right channel data
LINE1 Line 1 Data Register
PCMC PCM Center channel
PCMLS PCM Left Surround channel
PCMRS PCM Right Surround channel
Pin Function
Master Clock
Serial Port Bit Clock
Serial interface data input: Data is transferred from CODEC to this module
Serial interface data output: Data is transferred from this module to CODEC
Serial interface sync: This high active pin indicates that a frame starts from
the rising edge of the next SCLK.
When the connected CODEC is CS4271, the pin is an input and is used to
request an interrupt via the interface. But when the connected CODEC is
CS4218, the pin is an output used to power down CS4218. When CODEC is
AC97 CODEC, this pin is an output used to indicate an Power Management
Event has happened.
Reset: This pin, when low, resets the CS4218 to a known state.
Access Size Address
H'1000C000
32 bits H'1000C004
16 bits H'1000C008
16 bits H'1000C00C
16 bits H'1000C010
32 bits H'1000C020
32 bits H'1000C024
32 bits H'1000C028
32 bits H'1000C02C
32 bits H'1000C030
32 bits H'1000C034
32 bits H'1000C038
32 bits H'1000C03C
Rev. 3.0, 03/01, page 183 of 390