FDC37B787QF SMSC [SMSC Corporation], FDC37B787QF Datasheet - Page 17
FDC37B787QF
Manufacturer Part Number
FDC37B787QF
Description
Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37B787QF.pdf
(249 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 17 of 249
- Download datasheet (881Kb)
STATUS REGISTER A (SRA)
Address 3F0 READ ONLY
This register is read-only and monitors the state of the FINTR pin and several disk interface pins in PS/2
and Model 30 modes. The SRA can be accessed at any time when in PS/2 mode. In the PC/AT mode the
data bus pins D0 - D7 are held in a high impedance state for a read of address 3F0.
PS/2 Mode
BIT 0 DIRECTION
Active high status indicating the direction of head
movement. A logic "1" indicates inward direction; a
logic "0" indicates outward direction.
BIT 1 nWRITE PROTECT
Active low status of the WRITE PROTECT disk
interface input. A logic "0" indicates that the disk is
write protected. (See also Force Write Protect
Function)
BIT 2 nINDEX
Active low status of the INDEX disk interface input.
BIT 3 HEAD SELECT
Active high status of the HDSEL disk interface
input. A logic "1" selects side 1 and a logic "0"
selects side 0.
RESET
COND.
PENDING
INT
7
0
nDRV2
6
1
STEP
5
0
17
nTRK0 HDSEL nINDX
N/A
BIT 4 nTRACK 0
Active low status of the TRK0 disk interface input.
BIT 5 STEP
Active high status of the STEP output disk
interface output pin.
BIT 6 nDRV2
Active low status of the DRV2 disk interface input
pin, indicating that a second drive has been
installed. Note: This function is not supported
in this chip. (Always 1, indicating 1 drive)
BIT 7 INTERRUPT PENDING
Active high bit indicating the state of the Floppy
Disk Interrupt output.
4
3
0
N/A
2
nWP
N/A
1
DIR
0
0
Related parts for FDC37B787QF
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
FAST ETHERNET PHYSICAL LAYER DEVICE
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
357-036-542-201 CARDEDGE 36POS DL .156 BLK LOPRO
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
4-PORT USB2.0 HUB CONTROLLER
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
FDC37C672ENHANCED SUPER I/O CONTROLLER WITH FAST IR
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
COM90C66LJPARCNET Controller/Transceiver with AT Interface and On-Chip RAM
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
SMSC Corporation
Datasheet: