LAN9420-NU Standard Microsystems (SMSC), LAN9420-NU Datasheet - Page 103

• 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
SMSC LAN9420/LAN9420i
4.3
0024h – 004Ch
0058h – 007Ch
OFFSET
DMAC Control and Status Registers (DCSR)
000Ch
001Ch
0000h
0004h
0008h
0010h
0014h
0018h
0020h
0050h
0054h
Table 4.4
lists the registers contained in this section.
Table 4.4 DMAC Control and Status Register (DCSR) Map
BUS_MODE
TX_POLL_DEMAND
RX_POLL_DEMAND
RX_ BASE_ADDR
TX_BASE_ADDR
DMAC_STATUS
DMAC_CONTROL
DMAC_INTR_ENA
MISS_FRAME_CNTR
RESERVED
CUR_TX_BUF_ADDR
CUR_RX_BUF_ADDR
RESERVED
SYMBOL
DATASHEET
103
Bus Mode Register
Transmit Poll Demand Register
Receive Poll Demand Register
Receive List Base Address Register
Transmit List Base Address Register
DMA Controller Status Register
DMA Controller Control (Operation Mode) Register
DMA Controller Interrupt Enable Register
Missed Frame Counter (RX Only)
Reserved for future expansion
Current Transmit Buffer Address
Current Receive Buffer Address
Reserved for future expansion
REGISTER NAME
Revision 1.4 (12-17-08)