LAN9420-NU Standard Microsystems (SMSC), LAN9420-NU Datasheet - Page 11

• Manufacturer Part Number: LAN9420-NU
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9420-NU

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
Chapter 1 Introduction
SMSC LAN9420/LAN9420i
1.1
PCI
LAN9420/LAN9420i
PCI Bridge (PCIB)
Block Diagrams
PCI Master
PCI Target
Controller
Interrupt
PCI Host
(INT)
PCI Bus
Management
Power
(PM)
Figure 1.2 LAN9420/LAN9420i Internal Block Diagram
Arbiter
DMA Controller
System Control &
Status Registers
Status Registers
DMA Control &
Figure 1.1 System Level Block Diagram
(DCSR)
(SCSR)
TX DMA Engine
RX DMA Engine
PCI Device
PCI Device
LAN9420/LAN9420i
EEPROM
Controller
DATASHEET
(EPC)
System Control Block (SCB)
EEPROM
(optional)
11
GPIO/LED
Controller
MAC Interface Layer
(GPIO )
25MHz Crystal
TX FIFO (2KB)
RX FIFO (2KB)
GPIOs/LEDs
(optional)
External
(MIL)
GP Timer
Ethernet MAC
MAC Control & Status
RX COE
TX COE
Registers (MCSR)
Free-Run
Counter
GPIOs/LEDs
Magnetics
EEPROM
(optional)
(optional)
MAC
3.3V to 1.8V
Regulator
To Ethernet
+3.3V
Revision 1.4 (12-17-08)
Ethernet
10/100
PHY
25MHz
PLL
Ethernet