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參數(shù)資料
型號(hào): W90220F
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: PA-RISC Embedded Micro-Controller(惠普PA-RISC結(jié)構(gòu)的32位嵌入式微控制器)
中文描述: 32-BIT, 150 MHz, RISC PROCESSOR, PQFP208
封裝: PLASTIC, QFP-208
文件頁(yè)數(shù): 47/79頁(yè)
文件大小: 501K
代理商: W90220F
W90220F
47
The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Version 0.84
Winbond.
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31
REQ3_reg[3:10]
Bits 0-20 Reserved
Bits 21-31 Number of PCICLK count for Master Latency Adjustment
Latency Time = REQ3_reg[0:11] / PCICLK
5.2.4 PARALLEL PORT INTERFACE REGISTERS
There are eleven registers included in the Parallel Port Interface (PPI) controller. The IO address map is allocated
from 0xf0000370 to 0xf000037f.
Table 5.2.4-1 : PPI Register Map
(IO base (BA) : 0xf0000000)
Port Addr.
Symbol
Access
Description
BA + 0x378
DL
R/W
Data Line Register
BA + 0x379
DSR
R
Device Status Register
BA + 0x37a
DCR
R/W
Device Control Register
BA + 0x37b
FSR
R
FIFO Status Register
BA + 0x37c
FCR
R/W
FIFO Control Register
BA + 0x37d
IER
R/W
Interrupt Enable Register
BA + 0x37e
IIR
R
Interrupt Identification Register
BA+ 0x37f
DR
R
Data Register
BA + 0x370
Dfifo
R/W
Data FIFO
BA + 0x374
CMD
R/W
Command Register
BA + 0x375
TOR
R/W
Time Out Register
BA + 0x376 ~
BA + 0x377
-
-
Reserve for PPI future extension
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