LPC47N237-MD SMSC [SMSC Corporation], LPC47N237-MD Datasheet - Page 13

• Manufacturer Part Number: LPC47N237-MD
• Description: 3.3V I/O CONTROLLER FOR PORT REPLICATORS AND DOCKING STATIONS
• Manufacturer: SMSC [SMSC Corporation]

3.3v I/O Controller for Port Replicators and Docking Stations
Chapter 4
SMSC DS – LPC47N237
13,48,
53,65,
31,39,
56,60,
32,63
23:20
PIN#
1,18,
7,19,
93
76
61
62
64
17
24
25
26
27
28
29
30
84
85
nPCI_RESET
24MHz_OUT
nLFRAME
nCLKRUN
(NOTE 4.1)
SER_IRQ
nIO_PME
PCI_CLK
LAD[3:0]
nLPCPD
nLDRQ
XTAL1
XTAL2
NAME
VTR
VCC
RXD
VSS
TXD
Description of Pin Functions
+3.3 Volt Standby Supply Voltage (4)
+3.3 Volt Supply Voltage (5)
Ground (7)
used as single-ended oscillator clock input.
24MHz Clock Output
This active low Power Management signal
allows to request wakeup. It can be
configured to be Push-Pull output
Active high LPC I/O used for multiplexed
command, address and data bus.
Active low input indicates start of new cycle
and termination of broken cycle.
Active low output used for encoded
DMA/Bus Master request for the LPC
interface.
Active low input used as LPC Interface
Reset.
Active low input Power Down signal
indicates that the LPC47N237 should
prepare for power to be shut-off on the LPC
interface.
status and to request that a stopped clock
be started.
PCI clock input.
Serial IRQ pin used with the PCI_CLK pin to
transfer LPC47N237 interrupts to the host.
Transmit serial data output.
24MHz Crystal Clock Input. It can also be
24MHz Crystal Clock Output
This signal is used to indicate the PCI clock
Receiver serial data input.
PROCESSOR/HOST LPC INTERFACE (12)
SERIAL PORT INTERFACE (8)
Table 4.1 – Pin Description
DESCRIPTION
DATASHEET
POWER PINS (16)
CLOCKS (3)
Page 13
(NOTE 4.2)
PCI_ICLK
BUFFER
PCI_IOD
PCI_IO
PCI_IO
PCI_O
NAME
OCLK
OD12
PCI_I
PCI_I
PCI_I
ICLK
O12
O12
IS
WELL
(NOTE
PWR
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VTR
VTR
VTR
4.3)
Revision 0.3 (10-26-04)
(Note 4.4)
(Note 4.4)
(Note 4.5)
(Note 4.6)
NOTES