FDC37B787QF SMSC [SMSC Corporation], FDC37B787QF Datasheet - Page 174

• Manufacturer Part Number: FDC37B787QF
• Description: Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR
• Manufacturer: SMSC [SMSC Corporation]

Device ID
Hard wired
= 0x44
Device Rev
Hard wired
= 0x00
PowerControl
Default = 0x00.
on Vcc POR or
Reset_Drv
hardware signal.
Power Mgmt
Default = 0x00.
on Vcc POR or
Reset_Drv
hardware signal
OSC
Default = 0x04,
on Vcc POR or
Reset_Drv
hardware signal.
Chip Level
Vendor Defined
REGISTER
ADDRESS
0x22 R/W
0x23 R/W
0x24 R/W
0x20 R
0x21 R
0x25
A
identification. Bits[7:0] = 0x44 when read
A read only register which provides device revision
information. Bits[7:0] = 0x00 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
= 0 Power off or disabled
= 1 Power on or enabled
Bit[0] FDC
Bit[1] Reserved
Bit[2] Reserved
Bit[3] Parallel Port
Bit[4] Serial Port 1
Bit[5] Serial Port 2
Bit[6] Reserved (read as 0)
Bit[7] Reserved (read as 0)
= 0 Intelligent Pwr Mgmt off
= 1 Intelligent Pwr Mgmt on
Bit[0] Reserved
Bit [1] PLL Control
= 0 PLL is on (backward Compatible)
= 1 PLL is off
Bits[3:2] OSC
= 01 Osc is on, BRG clock is on.
= 10 Same as above (01) case.
= 00 Osc is on, BRG Clock Enabled.
= 11 Osc is off, BRG clock is disabled.
Bit [6:4] Reserved, set to zero
Bit[7] IRQ8 Polarity
= 0 IRQ8 is active high
= 1 IRQ8 is active low
Reserved - Writes are ignored, reads return 0.
read
only
177
register
DESCRIPTION
which
provides
device
STATE
C
C
C
C
C