FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 111

• Manufacturer Part Number: FDC37C669_07
• Description: PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support
• Manufacturer: SMSC [SMSC Corporation]

Note 1: Writing to the DOR or DSR does not wake up the part, however, writing any of the motor
enable bits or doing a software reset (via DOR or DSR reset bits) will wake up the part.
Base + Address
00H
01H
02H
03H
04H
06H
07H
07H
04H
05H
Table 44 - State of System Pins in Auto Powerdown
Access to these registers DOES NOT wake up the part
Table 43 - PC/AT and PS/2 Available Registers
System Pins
Access to these registers wakes up the part
DB[0:7]
RESET
IDENT
FINTR
D[0:7]
DACK
FDRQ
A[0:9]
IOW
IOR
TC
DOR (1)
DSR (1)
PC-AT
CCR
MSR
Data
DIR
----
----
---
---
Available Registers
Output Pins
Input Pins
State in Auto Powerdown
111
PS/2 (Model 30)
DOR (1)
DSR (1)
Unchanged (low)
Unchanged (low)
CCR
MSR
SRA
SRB
Data
DIR
---
---
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Access Permitted
R/W
R/W
---
---
W
W
R
R
R
R