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參數(shù)資料
型號(hào): W83877TF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設(shè)及接口
英文描述: Multi-Function I/O Port Controller(用于個(gè)人計(jì)算機(jī)的多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數(shù): 42/154頁
文件大小: 821K
代理商: W83877TF
W83877TF
Publication Release Date: March 1998
- 32 -
Version 0.61
7
6
5
4
3
2
1-0
Drive Select: 00 select drive A
01 select drive B
10 select drive C
11 select drive D
Floppy Disk Controller Reset
Active low resets FDC
DMA and INT Enable
Active high enable DRQ/IRQ
Motor Enable A. Motor A on when active high
Motor Enable B. Motor B on when active high
Motor Enable C. Motor C on when active high
Motor Enable D. Motor D on when active high
2.2.4 Tape Drive Register (TD Register) (Read base address + 3)
This register is used to assign a particular drive number to the tape drive support mode of the data
separator. This register also holds the media ID, drive type, and floppy boot drive information of the
floppy disk drive. In normal floppy mode, this register includes only bit 0 and 1. The bit definitions are
as follows:
1
2
3
4
5
6
7
0
Tape sel 0
Tape sel 1
X
X
X
X
X
X
If three mode FDD function is enabled (EN3MODE = 1 in CR9), the bit definitions are as follows:
1
2
3
4
5
6
7
0
Floppy boot drive 0
Floppy boot drive 1
Drive type ID0
Drive type ID1
Media ID0
Media ID1
Tape Sel 0
Tape Sel 1
Media ID1 Media ID0 (Bit 7, 6):
These two bits are read only. These two bits reflect the value of CR8 bit 3, 2.
Drive type ID1 Drive type ID0 (Bit 5, 4):
These two bits reflect two of the bits of CR7. Which two bits are reflected depends on the last drive
selected in the DO REGISTER.
Floppy Boot drive 1, 0 (Bit 3, 2):
These two bits reflect the value of CR8 bit 1, 0.
Tape Sel 1, Tape Sel 0 (Bit 1, 0):
相關(guān)PDF資料
PDF描述
W83971D AC97 AUDIO CODEC
W83977AF PLUG & PLAY 1.0A COMPLIANT
W83977EF WINBOND I/O
W83977F PLUG & PLAY 1.0A COMPLIANT
W83977TF-AW I/O chip disk drive adapter
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