LAN9420I-NU Standard Microsystems (SMSC), LAN9420I-NU Datasheet - Page 96

• Manufacturer Part Number: LAN9420I-NU
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9420I-NU

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

Revision 1.4 (12-17-08)
4.2.8
31:28
26:25
BITS
24:0
27
RESERVED
RESERVED
RX/TX Arbitration Priority Select (CSR_RXTXWEIGHT)
This field selects the arbitration priority ratio for receive and transmit DMA
operations. This field has no effect unless the BAR bit in the BUS_MODE
DCSR is cleared.
RESERVED
Bus Master Bridge Configuration Register (BUS_CFG)
This register determines the bus arbitration characteristics for the RX and TX DMA engines.
Setting
------------------------------------------------
00b
01b
10b
11b
Offset:
Priority Ratio (RX:TX)
4:1
1:1
2:1
3:1
DESCRIPTION
00DCh
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
DATASHEET
96
Size:
32 bits
TYPE
SMSC LAN9420/LAN9420i
R/W
R/W
RO
RO
DEFAULT
00b
Datasheet
0b
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-