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CL-PS7110 Datasheet, PDF (1/82 Pages) Cirrus Logic – Low-Power System-on-a-Chip | |||
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CL-PS7110
Data Book
FEATURES
s Ultra low power
â Designed for applications that require long battery life
while using standard AA/AAA batteries
â Average 20 mA in normal operation (everything on)
â Average 5 mA in idle mode (clock to the CPU stopped,
everything else running)
â Average 3 µA in standby mode (realtime clock on and
everything else stopped)
s Performance matching 33-MHz Intel® â486-based
PC
â 15 Vaxâ¢-MIPS (Dhrystone®) at 18 MHz
s ARM710A microprocessor
â ARM7 CPU
â 8 Kbytes of four-way set-associative cache
â MMU with 64-entry TLB (transition look-aside buffer)
â Little endian
s DRAM controller
â Connects up to four banks of DRAM, with each bank
being 32 bits wide and up to 256 Mbytes in size
(cont.)
Functional Block Diagram
Low-Power
System-on-a-Chip
OVERVIEW
The CL-PS7110 is designed for ultra-low-power
applications such as organizers/PDAs, two-way
pagers, smart phones, and hand-held internet
browsers. The deviceâs core-logic functionality is
built around an ARM710A microprocessor with 8
Kbytes of four-way set-associative uniï¬ed cache.
At 18.432 MHz (for 3-V operation), the CL-PS7110
delivers nearly 15 Vax-MIPS of performance (based
on Dhrystone® benchmark) â roughly the same
(cont.)
3.6864 MHz
32.786 kHz
EINT[1â3],
FIQ
BATOK, EXTPWR
PWRFL, BATCHG
PORTS A B C D â 8-BIT
PORT E â 4-BIT
KEYBOARD COLUMN
DRIVES (0â7)
BUZZER DRIVE
DC TO DC
CLK, SYNC, IN,
OUT, SMPCLK
CLK, SYNC IN,
OUT
18.432-MHz
PLL
32.768-kHz
OSCILLATOR
INTERRUPT
CONTROLLER
POWER
MANAGEMENT
GPIO
PSU
CONTROL
SYNCHRONOUS
SERIAL I/O
CODEC
INTERFACE
ARM710A
ARM7
µP CORE
8-KBYTE
CACHE
MMU
COUNTERS
(2)
RTC
INTERNAL DATA BUS
STATE
CONTROL
ROM/EXPANSION
CONTROL
DRAM
CONTROLLER
INTERNAL
ADDRESS BUS
MUX
D0âD31
POR, RUN,
RESET,
WAKEUP
EXPCLK, WORD,
CD[0â7], EXPRDY,
WRITE
MOE, MWE
RAS[0â3], CAS[0â3]
A[0â27],
DRA[0â12]
LCD
CONTROLLER
LCD DRIVE
UART
IRDA
LED AND PHOTO-
DIODE
RS232 INTERFACE
Version 1.5
May 1997
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