EP7311-CB-90 datasheet(11/58 Pages) CIRRUS

Part #	EP7311-CB-90

Description	High-performance, Low-power, System-on-chip with SDRAM & Enhanced Digital Audio Interface

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Manufacturer	CIRRUS [Cirrus Logic]

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DS506F1

©Copyright Cirrus Logic, Inc. 2005

11

EP7311

High-Performance, Low-Power System on Chip

Pin Multiplexing

The following table shows the pin multiplexing of the MCP,

SSI2 and the CODEC. The selection between SSI2 and the

CODEC is controlled by the state of the SERSEL bit in

SYSCON2. The choice between the SSI2, CODEC, and the

MCP is controlled by the MCPSEL bit in SYSCON3 (see the

EP73xx User’s Manual for more information).

The following table shows the pins that have been multiplexed

in the EP7311.

Mnemonic

I/O

MCP

SSI2

CODEC

SSICLK

I/O

SIBCLK

SSICLK

PCMCLK

SSITXDA

O

SIBDOUT

SSITXDA

PCMOUT

SSIRXDA

I

SIBDIN

SSIRXDA

PCMIN

SSITXFR

I/O

SIBSYNC

SSITXFR

PCMSYNC

SSIRXFR

I

p/u

SSIRXFR

p/u

BUZ

O

Table R. MCP/SSI2/CODEC Pin Multiplexing

Signal

Block

Signal

Block

nMOE

Static Memory

nSDCAS

SDRAM

nMWE

Static Memory

nSDWE

SDRAM

WRITE

Static Memory

nSDRAS

SDRAM

A[27:15]

Static Memory

DRA[0:12]

SDRAM

A[14:13]

Static Memory

DRA[13:14]

SDRAM

PD[7:6]

GPIO

SDQM[1:0]

SDRAM

RUN

System

Configuration

CLKEN

System

Configuration

nMEDCHG

Interrupt

Controller

nBROM

Boot ROM

select

PD[0]

GPIO

LEDFLSH

LED Flasher

PE[1:0]

GPIO

BOOTSEL[1:0]

System

Configuration

PE[2]

GPIO

CLKSEL

System

Configuration

Table S. Pin Multiplexing

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EP7311-CB-90 Datasheet(PDF) 11 Page - Cirrus Logic

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