FDC37C672QFP SMSC Corporation, FDC37C672QFP Datasheet - Page 126

• Manufacturer Part Number: FDC37C672QFP
• Description: ENHANCED SUPER I/O CONTROLLER WITH FAST IR
• Manufacturer: SMSC Corporation

SMSC FDC37C672
Index Address
Default = 0x03
on Vcc POR or
Reset_Drv
Logical Device #
Default = 0x00
on Vcc POR or
Reset_Drv
Card Level Reserved
Device ID
Hard wired
= 0x40
Device Rev
Hard wired
= 0x01
PowerControl
Default = 0x00.
on Vcc POR or
Reset_Drv hardware
signal
REGISTER
0x04 - 0x06
0x08 - 0x1F
ADDRESS
0x03 R/W
0x07 R/W
0x22 R/W
0x20 R
0x21 R
Bit[7]
= 1
= 0
Bits [6:2]
Reserved - Writes are ignored, reads return 0.
Bits[1:0]
Sets GP index register address when in Run mode (not in
Configuration Mode).
= 11
= 10
= 01
= 00
Reserved - Writes are ignored, reads return 0.
A write to this register selects the current logical device.
This allows access to the control and configuration
registers for each logical device.
Note: The Activate command operates only on the
Reserved - Writes are ignored, reads return 0.
A read only register which provides device identification.
Bits[7:0] = 0x40 when read.
A read only register which provides device revision
information. Bits[7:0] = 0x01 when read.
Bit[0] FDC Power
Bit[1] Reserved
Bit[2] Reserved
Bit[3] Parallel Port Power
Bit[4] Serial Port 1 Power
Bit[5] Serial Port 2 Power
Bit[6] Reserved
Bit[7] Reserved (read as 0)
= 0
= 1
Chip Level, SMSC Defined
DATASHEET
Enable WDT_CTRL and SMI Enable and SMI Status
Register access when not in configuration mode
Disable WDT_CTRL and SMI Enable and SMI
Status Register access when not in configuration
mode (Default)
Power off or disabled
Power on or enabled
0xEA (Default)
0xE4
0xE2
0xE0
selected logical device.
Page 126
DESCRIPTION
Enhanced Super I/O Controller with Fast IR
Rev. 10-29-03
STATE
Datasheet
C
C
C
C