LAN9420 Datasheet, PDF (16/171 Pages) SMSC Corporation – Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

2.1 Pin List
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
NUM
PINS
1
1
NAME
PCI Clock In
PCI Frame
32 PCI Address
and Data Bus
1
PCI Reset
4
PCI Bus
Command and
Byte Enables
1
PCI Initiator
Ready
1
PCI Target
Ready
1
PCI Stop
1
PCI Device
Select
1
PCI Parity
1
PCI Parity
Error
1
PCI System
Error
1 PCI Interrupt
1
PCI IDSEL
1 PCI Request
1
PCI Grant
1
PCI Power
Management
Event
1 Power Good
1 V_AUX Detection
Table 2.1 PCI Bus Interface Pins
SYMBOL
PCICLK
nFRAME
AD[31:0]
PCInRST
nCBE[3:0]
BUFFER
TYPE
IS
IPCI/
OPCI
IPCI/
OPCI
IS
IPCI/
OPCI
DESCRIPTION
PCI Clock In: 0 to 33MHz PCI Clock Input.
PCI Cycle Frame
PCI Address and Data Bus
PCI Reset
PCI Bus Command and Byte Enables
nIRDY
nTRDY
nSTOP
nDEVSEL
PAR
nPERR
nSERR
nINT
IDSEL
nREQ
nGNT
nPME
PWRGOOD
VAUXDET
IPCI/
OPCI
IPCI/
OPCI
IPCI/
OPCI
IPCI/
OPCI
IPCI/
OPCI
IPCI/
OPCI
IPCI/
OPCI
OPCI
IPCI
OPCI
IPCI
OPCI
IS
(PD)
IS
(PD)
PCI Initiator Ready
PCI Target Ready
PCI Stop
PCI Device Select
PCI Parity
PCI Parity Error
PCI System Error
PCI Interrupt
Note: This pin is an open drain output.
PCI IDSEL
PCI Request
Note: This pin is a tri-state output.
PCI Grant
PCI Power Management Event
Note: This pin is an open drain output.
PCI Bus Power Good: This pin is used to sense the
presence of PCI bus power during the D3 power
management state.
Note: This pin is pulled low through an internal pull-
down resistor
PCI Auxiliary Voltage Sense: This pin is used to sense
the presence of a 3.3V auxiliary supply in order to define
the PME support available.
Note: This pin is pulled low through an internal pull-
down resistor
Revision 1.6 (07-18-11)
16
DATASHEET
SMSC LAN9420/LAN9420i