參數(shù)資料
型號: CL-PS7111-VC-A
廠商: CIRRUS LOGIC INC
元件分類: 外設(shè)及接口
英文描述: Low-Power System-on-a-Chip
中文描述: MULTIFUNCTION PERIPHERAL, PQFP208
封裝: VQFP-208
文件頁數(shù): 20/105頁
文件大?。?/td> 1207K
代理商: CL-PS7111-VC-A
September 1997
19
PRELIMINARY DATA BOOK v2.0
FUNCTIONAL DESCRIPTION
CL-PS7111
Low-Power System-on-a-Chip
Figure 3-2
shows a simplified functional block diagram of the CL-PS7111. All external memory and
peripheral devices are connected to the 8-, 16-, or 32-bit data bus, using the external 28-bit address bus
and control signals. Bus transfer times can be extended by using the EXPRDY signal to lengthen bus
cycles. The maximum burst transfer rate of the external bus is approximately 70 Mbytes per sec. using
32-bit-wide DRAM at 18.432 MHz or 25 Mbytes per sec. using 16-bit-wide DRAM at 13 MHz.
Figure 3-2. CL-PS7111 Block Diagram
32.768-KHZ
OSCILLATOR
18.432-MHZ
PLL
INTERRUPT
CONTROLLER
POWER
MANAGEMENT
SYNC. SERIAL
INTERFACE
STATE
CONTROL
DRAM
CONTROLLER
LCD
CONTROLLER
ARM7
MP CORE
8-KBYTE
CACHE
MMU
COUNTERS
(2)
RTC
CODEC INTFC.
ARM710a
INTERNAL DATA BUS
PSU
CONTROL
3.6864 MHZ
32.768 KHZ
EINT[1–3], FIQ,
MEDCHG
BATOK, NEXTPWR
PWRFL, BATCHG
PORTS A, B, D (8-BIT)
PORT E (3-BIT)
KEYBOARD COLUMN
DRIVERS (0–7)
BUZZER DRIVE
DC TO DC
ADCCLK, ADCIN,
ADCOUT, SMPCLK,
RXFS, TXFS
PCMCLK, PCMSYNC
PCMIN, PCMOUT,
UART
MUX
IRDA
D0–D31
NPOR, RUN,
RESET, WAKEUP
EXPCLK, WORD,
CD[0–3], EXPRDY,
WRITE
MOE, MWE, NMOE,
NMWE
NRAS[0–1], NCAS[0–3]
A[0–27],
DRA[0–12]
LCD DRIVE
LED AND PHOTO-
DIODE
ASYNC INTERFACE 2
INTERNAL
ADDRESS BUS
GPIO
13-MHZ INPUT
ON-CHIP
BOOT ROM
ASYNC INTERFACE 1
SRAM
2 KBYTE
CL-PS6700
INTFC.
PB[0–1], CS[4–5]
ROM/EXPANSION
CONTROL
UART
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