EP7309-CB-C Просмотр технического описания (PDF) - Cirrus Logic

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EP7309-CB-C

High-Performance, Low-Power System on Chip Enhanced Digital Audio Interface

Cirrus Logic 

EP7309

High-Performance, Low-Power System on Chip

System Design

As shown in system block diagram, simply adding

desired memory and peripherals to the highly integrated

EP7309 completes a low-power system solution. All

necessary interface logic is integrated on-chip.

CRYSTAL

CRYSTAL

PC CARD

SOCKET

PC CARD

CONTROLLER

×16

FLASH

×16

FLASH

×16

FLASH

×16

FLASH

EXTERNAL MEMORY-

MAPPED EXPANSION

BUFFERS

ADDITIONAL I/O

BUFFERS

AND

LATCHES

MOSCIN

RTCIN

nCS[4]

PB0

EXPCLK

D[0-31]

A[0-27]

nMOE

WRITE

nCS[0]

nCS[1]

CS[n]

WORD

nCS[2]

nCS[3]

LEDFLSH

DD[0-3]

CL1

CL2

FRM

M

COL[0-7]

PA[0-7]

PB[0-7]

PD[0-7]

PE[0-2]

nPOR

nPWRFL

BATOK

nEXTPWR

nBATCHG

RUN

WAKEUP

DRIVE[0-1]

FB[0-1]

SSICLK

SSITXFR

SSITXDA

SSIRXDA

SSIRXFR

LEDDRV

PHDIN

RXD1/2

TXD1/2

DSR

CTS

DCD

ADCCLK

nADCCS

ADCOUT

ADCIN

SMPCLK

LCD

KEYBOARD

POWER

SUPPLY UNIT

AND

COMPARATORS

DC

INPUT

BATTERY

DC-TO-DC

CONVERTERS

CODEC/SSI2/

DAI

IR LED AND

PHOTODIODE

2× RS-232

TRANSCEIVERS

ADC

DIGITIZER

Figure 1. A Maximum EP7309 Based System

Note: A system can only use one of the following peripheral

interfaces at any given time: SSI2,CODEC or DAI.

8

Copyright 2001 Cirrus Logic (All Rights Reserved)

DS507PP1

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