W83627EG Nuvoton Technology Corporation of America, W83627EG Datasheet - Page 147

• Manufacturer Part Number: W83627EG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627EG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.2.4
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 for the
floppy disk drive.
In normal floppy mode, this register only has bits 0 and 1, and the bit definitions are as follows:
If the three-mode FDD function is enabled (EN3MODE = 1 in LD0 CRF0, Bit 0), the bit definitions are
as follows:
Media ID1 Media ID0 (Bit 7, 6):
These two bits are read-only. These two bits reflect the value of LD0 CRF1, bits 5 and 4.
Tape Drive Register (TD Register) (Read base address + 3)
7
6
5
7
4
6
X
7
3
X
5
6
5
X
2
4
X
4
3
1-0
W83627EHF/EF, W83627EHG/EG
X
3
- 136 -
2
Drive Select: 00 select drive A
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
Reserved
Reserved
Reserved
X
2
1
1
0
0
Tape Sel 0
Tape Sel 1
Floppy boot drive 0
Floppy boot drive 1
Drive type ID0
Drive type ID1
Media ID0
Media ID1
01 Reserved
10 Reserved
11 Reserved
Tape sel 1
Tape sel 0