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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: 132/171頁
文件大小: 1634K
代理商: W83877AF
W83877AF
Publication Release Date: Dec. 1996
Preliminary Version 0.52
- 130 -
1
2
3
4
5
6
7
0
GMAS0
GMAS1
GMAD2
GMAD3
GMAD4
GMAD5
GMAD6
GMAD7
This register is used to select the base address of Game Chip Select Decoder (GAMECS) from 100H-
3F0H on 16-byte boundaries. nCS = 0 and A10 = 0 are required to qualify the GAMECS output.
GMAD7-GMAD2 (bit 7-bit 2): match A[9:4].
GMAS1-GMAS0 (bit 1-bit 0): CAMECS configuration.
00
01
10
11
GAMECS disable
1-byte decode, A[3:0] = 0001b
8-byte decode, A[3:0] = 0xxxb
16-byte decode, A[3:0] = xxxxb
8.2.25 Configuration Register 20 (CR20)
When the device is in Extended Function mode and EFIR is 20H, the CR20 register can be accessed
through EFDR. Default = FCH if CR16 bit 2 = 1; default = 00H if CR16 bit 2 = 0. The bit definitions
are as follows:
1
2
3
4
5
6
7
0
Reserved
Reserved
FDCAD2
FDCAD3
FDCAD4
FDCAD5
FDCAD6
FDCAD7
This register is used to select the base address of the Floppy Disk Controller (FDC) from 100H-3F0H
on 16-byte boundaries. nCS = 0 and A10 = 0 are required to access the FDC registers. A[3:0] are
always decoded as 0xxxb.
FDCAD7-FDCAD2 (bit 7-bit 2): match A[9:4]. Bit 7 = 0 and bit 6 = 0 disable this decode.
Bit 1-bit 0: Reserved, fixed at zero.
8.2.26 Configuration Register 21 (CR21)
When the device is in Extended Function mode and EFIR is 21H, the CR21 register can be accessed
through EFDR. Default = 7CH if CR16 bit 2 = 1; default = 00H if CR16 bit 2 = 0. The bit definitions
are as follows:
相關PDF資料
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W83877ATD enhanced version from Winbonds most popular I/O chip W83877F
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相關代理商/技術參數
參數描述
W83877ATD 制造商:WINBOND 制造商全稱:Winbond 功能描述:enhanced version from Winbonds most popular I/O chip W83877F
W83877ATF 制造商:WINBOND 制造商全稱:Winbond 功能描述:enhanced version from Winbonds most popular I/O chip W83877F
W83877F 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83877TD 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83877TF 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O