參數(shù)資料
型號: CL-PS7111
廠商: Cirrus Logic, Inc.
英文描述: Low-Power System-on-a-Chip
中文描述: 低功耗系統(tǒng)級晶片
文件頁數(shù): 3/105頁
文件大小: 1207K
代理商: CL-PS7111
September 1997
3
PRELIMINARY DATA BOOK v2.0
OVERVIEW
CL-PS7111
Low-Power System-on-a-Chip
A CL-PS7111–Based System
LCD MODULE
KEYBOARD
BATTERY
DC-TO-DC
CONVERTERS
ADC
DIGITIZER
IR LED AND
PHOTODIODE
2
×
RS-232
TRANSEIVER
ADDITIONAL I/O
CL-PS6700 PC
CARD
CONTROLLER
PC CARD
SOCKETS
NCS[4]
PB0
EXPCLK
DD[3:0]
CL1
CL2
FRM
M
D[31:0]
A[27:0]
COL[7:0]
PA[7:0]
DC
INPUT
NMOE
WRITE
NRAS[1]
NRAS[0]
NCAS[0]
NCAS[1]
NCAS[2]
NCAS[3]
PB[7:0]
PD[7:0]
PE[2:0]
NPOR
NPWRFL
BATOK
NEXTPWR
NBATCHG
RUN
WAKEUP
NCS[0]
NCS[1]
DRIVE[1:0]
FB[1:0]
CL-PS7111
ADCCLK
NADCCS
ADCOUT
ADCIN
SMPCLK
LEDDRV
PHDIN
RxD1/2
TxD1/2
DSR
CTS
DCD
CS[n]
WORD
NCS[2]
NCS[3]
×
16
DRAM
×
16
DRAM
×
16
FLASH
×
16
FLASH
×
16
ROM
EXTERNAL MEMORY
MAPPED EXPANSION
BUFFERS
BUFFERS AND
LATCHES
×
16
ROM
×
16
DRAM
×
16
DRAM
POWER
SUPPLY UNIT
AND
COMPARATORS
OSCILLATOR
CODEC
PCMSYNC
PCMOUT
PCMCLK
PCMIN
OVERVIEW
Power Management
(cont.)
The CL-PS7111 is designed for low-power opera-
tion. There are three basic power states:
G
Standby —
puter being switched off (no display), and the
main oscillator shut down.
This state is equivalent to the com-
G
Idle —
all oscillators are running, but the processor
clock is halted while waiting for an event such as
a key press.
In this state
,
the device is functioning and
G
Operating —
state, except that the processor clock is running.
This state is the same as the idle
Packaging
The CL-PS7111 is packaged in a 208-pin VQFP
package, with a body size of 28-mm square, a lead
pitch of 0.5 mm and thickness of 1.4 mm.
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