LPC47M107S-MS Standard Microsystems (SMSC), LPC47M107S-MS Datasheet - Page 22

• Manufacturer Part Number: LPC47M107S-MS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M107S-MS

• Pin Count: 100
• Lead Free Status / RoHS Status: Compliant

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.
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.
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
This function is not supported. This bit is always read as “1”.
BIT 7 INTERRUPT PENDING
Active high bit indicating the state of the Floppy Disk Interrupt output.
PS/2 Model 30 Mode
BIT 0 nDIRECTION
Active low status indicating the direction of head movement. A logic "0" indicates inward direction; a logic "1" indicates
outward direction.
BIT 1 WRITE PROTECT
Active high status of the WRITE PROTECT disk interface input. A logic "1" indicates that the disk is write protected.
BIT 2 INDEX
Active high status of the INDEX disk interface input.
BIT 3 nHEAD SELECT
Active low status of the HDSEL disk interface input. A logic "0" selects side 1 and a logic "1" selects side 0.
BIT 4 TRACK 0
Active high status of the TRK0 disk interface input.
BIT 5 STEP
Active high status of the latched STEP disk interface output pin. This bit is latched with the STEP output going active,
and is cleared with a read from the DIR register, or with a hardware or software reset.
RESET
COND.
RESET
COND.
PENDING
PENDING
INT
INT
7
0
7
0
nDRV2
DRQ
6
0
6
1
STEP
F/F
STEP
5
0
5
0
Page 22
TRK0 nHDSEL
nTRK0 HDSEL nINDX
N/A
4
N/A
4
3
1
3
0
INDX
N/A
N/A
2
2
nWP
N/A
WP
N/A
1
1
nDIR
DIR
0
1
0
0