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參數資料
型號: W83877AF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: Multi-Function I/O Port Controller(多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數: 168/171頁
文件大?。?/td> 1634K
代理商: W83877AF
877A APN 2
Page 1 of 4
W83877AF
Application Note 2
June 11, 1996
F
eature
B
rief
W83877AF: W83877F + FIR 4Mbps + MIR 1.15Mbps + Consumer IR
D
escription
1. Illustrates the pins that have different functinality on the 877 and 877A.
Pin
1
2
3
38
91
93
W83877F
W83877AF
IRQ_G/nRESIDE
nCS
PDCIN
SOUTA/IRIDE
nIDBEN/IRQ_H
IRQIN
IRQ_G/nRESIDE/
DRQ_D/IRSL2
nCS/
nDACK_D/IRSL1/IRSL2
PDCIN/
nDACK_D
/
IRSL1/IRRXH (IRSL0)
SOUTA/
DRQDSEL
IRQ_H/nIDBEN/
nDACK_D/IRSL2/IRRXH (IRSL0)
IRQIN/
DRQ_D/IRSL2/IRRXH (IRSL0)
2.
W83877AF Power-on Setting
Pin No. Pin Name Function Name Default
35
DTRA
36
RTSA
38
SOUTA
PIN2IPSEL
43
SOUTB
GMDRQ
45
RTSB
46
Reserved
High (=1)
Low (=0)
HEFRAS
PnPCSV
L
H
H
L
L
CFAD=3F0H
With Default Value
PIN2 as nCS
PIN39,41 as GAME port
PIN92,96 as IRQ signal
CFAD=250H
Without Default Value
PIN2 as nDACK_D
PIN39,41 as DMA signal
PIN92,96 as GIO signal
IGIOSEL
3. Configure Register:
The following configure registers are different from those of 877F.
CR0B(Default 0x00)
Bit 7 : DSPRTPU.
= 0 Enable parallel port pull-up resistor.
= 1 Disable parallel port pull-up resistor.
Bit 4-0 : Same as 877.
Bit 6 : TXW4C.
= 0 SIR of UART B will output data immediately when receeiving changing to transmitting.
= 1 SIR of UART B will wait for 4 characters time when receiving changing to transmitting.
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