EP7211 Datasheet, PDF (76/166 Pages) Cirrus Logic – HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER

EP7211
High-Performance Ultra-Low-Power System-on-Chip with LCD Controller
NOTE: Bold indicates active byte lane.
3.20 Maximum EP7211-Based System
A maximum configured system using the EP7211 is shown in Figure 3-13. A Maximum EP7211
Based System. This system assumes all the DRAMs and ROMs are 16-bit wide devices. The
keyboard may be connected to more GPIO bits than shown to allow greater than 64 keys, however
these extra pins will not be wired into the WAKEUP pin functionality.
CRYSTAL
PC CARD
SOCKET
CL-PS6700
PC CARD
CONTROLLER
×16
DRAM
×16
DRAM
×16
DRAM
×16
DRAM
×16
FLASH
×16
FLASH
×16
ROM
×6
ROM
EXTERNAL MEMORY-
MAPPED EXPANSION
BUFFERS
ADDITIONAL I/O
BUFFERS
AND
LATCHES
MOSCIN
NCS[4]
PB0
EXPCLK
D[31:0]
A[27:0]
NMOE
WRITE
NRAS[1]
NRAS[0]
NCAS[0]
NCAS[1]
NCAS[2]
NCAS[3]
NCS[0]
NCS[1]
CS[n]
WORD
NCS[2]
NCS[3]
LEDFLSH
DD[3:0]
CL1
CL2
FM
M
COL[7:0]
PA[7:0]
PB[7:0]
PD[7:0]
PE[2:0]
NPOR
NPWRFL
BATOK
NEXTPWR
NBATCHG
RUN
WAKEUP
DRIVE[1:0]
FB[1:0]
SSICLK
SSITXFR
SSITXDA
SSIRXDA
SSIRXFR
LEDDRV
PHDIN
RXD1/2
TXD1/2
DSR
CTS
DCD
ADCCLK
NADCCS
ADCOUT
ADCIN
SMPCLK
LCD MODULE
KEYBOARD
POWER
SUPPLY UNIT
AND
COMPARATORS
DC
INPUT
BATTERY
DC-TO-DC
CONVERTERS
CODEC/SSI2/
MCP
IR LED AND
PHOTODIODE
2× RS-232
TRANSCEIVERS
ADC
DIGITIZER
Figure 3-13. A Maximum EP7211 Based System
76
Functional Description
DS352PP3
JUL 2001