EP7309-CB-C CIRRUS [Cirrus Logic], EP7309-CB-C Datasheet - Page 8

• Manufacturer Part Number: EP7309-CB-C
• Description: HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE
• Manufacturer: CIRRUS [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
8
Note:
EXTERNAL MEMORY-
MAPPED EXPANSION
ADDITIONAL I/O
A system can only use one of the following peripheral
interfaces at any given time: SSI2,CODEC or DAI.
PC CARD
SOCKET
CRYSTAL
CRYSTAL
FLASH
FLASH
×16
×16
CONTROLLER
BUFFERS
BUFFERS
LATCHES
PC CARD
AND
FLASH
FLASH

×16
×16
Copyright 2001 Cirrus Logic (All Rights Reserved)
Figure 1. A Maximum EP7309 Based System
MOSCIN
RTCIN
nCS[2]
nCS[3]
nCS[4]
PB0
EXPCLK
nCS[0]
nCS[1]
CS[n]
WORD
D[0-31]
A[0-27]
nMOE
WRITE
LEDFLSH
EP7309 completes a low-power system solution. All
necessary interface logic is integrated on-chip.
DRIVE[0-1]
nEXTPWR
nBATCHG
SSIRXDA
WAKEUP
SSITXDA
SSIRXFR
SSITXFR
LEDDRV
COL[0-7]
ADCCLK
ADCOUT
SMPCLK
nPWRFL
nADCCS
SSICLK
DD[0-3]
BATOK
PA[0-7]
PB[0-7]
PD[0-7]
PE[0-2]
FB[0-1]
RXD1/2
TXD1/2
PHDIN
ADCIN
nPOR
FRM
RUN
DCD
DSR
CTS
CL1
CL2
M
COMPARATORS
TRANSCEIVERS
ADC
CONVERTERS
PHOTODIODE
SUPPLY UNIT
CODEC/SSI2/
KEYBOARD
IR LED AND
DC-TO-DC
2× RS-232
POWER
LCD
AND
DAI
DIGITIZER
BATTERY
INPUT
DC
DS507PP1