LPC47S457-NC SMSC [SMSC Corporation], LPC47S457-NC Datasheet - Page 12

• Manufacturer Part Number: LPC47S457-NC
• Description: Advanced I/O with X-Bus Interface
• Manufacturer: SMSC [SMSC Corporation]

4
SMSC DS – LPC47S45x
1, 56,
125
79, 106
21, 68,
34, 63,
PIN #
126
124
127
128
96
22
10
11
12
13
14
15
16
17
18
19
23
24
25
26
27
28
5
2
3
4
6
7
8
9
PIN DESCRIPTION
VCC
VTR
VSS
AVSS
Vbat
XTAL1
XTAL2/CLKI3
2
CLOCKI
CLKO40
XOSEL
nPB_IN
nPS_ON
GP40
/DRVDEN0
GP41
/DRVDEN1
nMTR0
nDSKCHG
nDS0
nDIR
nSTEP
nWDATA
nWGATE
nHDSEL
nINDEX
nTRK0
nWRTPRT
nRDATA
LAD0
LAD1
LAD2
LAD3
LFRAME#
LDRQ#
NAME
+3.3 Volt Supply Voltage
+3.3 Volt Standby Supply Voltage
(Note 6)
Ground
Analog Ground
+3.0 Volt Battery Supply
32.768k Hz XTAL1 Terminal
32.768k Hz XTAL2 Terminal/ 32.768kHz
Standby Clock Input (Note 3)
14.318MHz Clock Input
40 MHz Clock Output
Crystal Oscillator Select (Note 12)
Power Button Input
Power Supply Output
General Purpose I/O /Drive Density Select 0
General Purpose I/O /Drive Density Select 1
Motor On 0
Disk Change
Drive Select 0
Step Direction
Step Pulse
Write Disk Data
Write Gate
Head Select
Index Pulse Input
Track 0
Write Protected
Read Disk Data
Multiplexed Command Address and Data 0
Multiplexed Command Address and Data 1
Multiplexed Command Address and Data 2
Multiplexed Command Address and Data 3
Frame
Encoded DMA Request
Power Button Control (2)
FDD INTERFACE (14)
LPC INTERFACE (10)
Clock Control Pin (1)
POWER PINS (12)
CLOCK PINS (4)
DATASHEET
FUNCTION
Page 12 of 259
IXTL
OXTL/I
I
OP14
I
IS
OD12
IO12
IO12
O12
IS
O12
O12
O12
O12
O12
O12
IS
IS
IS
IS
PCI_IO
PCI_IO
PCI_IO
PCI_IO
PCI_I
PCI_O
BUFFER
TYPE
IXTL
OXTL/I
I
OP14
I
IS
OD12
(I/O12/OD12)
/(O12/OD12)
(I/O12/OD12)/
(O12/OD12)/O1
2
(O12/OD12)
IS
(O12/OD12)
(O12/OD12)
(O12/OD12)
(O12/OD12)
(O12/OD12)
(O12/OD12)
IS
IS
IS
IS
PCI_IO
PCI_IO
PCI_IO
PCI_IO
PCI_I
PCI_O
BUFFER TYPE
FUNCTION
(NOTE 1)
PER
Rev. 07/09/2001
Vbat
Vbat
VCC
VTR
Vbat
VTR
(Note 13)
VTR
VCC
VCC
(Note 13)
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
POWER
WELL