LAN9420I-NU Standard Microsystems (SMSC), LAN9420I-NU Datasheet - Page 136

• 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)
4.5.1
BITS
6:0
15
14
13
12
11
10
9
8
7
PHY Soft Reset
1 = PHY software reset. Bit is self-clearing. When setting this bit do not set
other bits in this register.
Loopback
1 = loopback mode, 0 = normal operation
Speed Select
1 = 100Mbps, 0 = 10Mbps. Ignored if Auto Negotiation is enabled (0.12 =
1).
Auto-Negotiation Enable
1 = enable auto-negotiate process (overrides 0.13 and 0.8) 0 = disable
auto-negotiate process.
Power Down
1 = General Power-Down mode, 0 = normal operation
Note:
RESERVED
Restart Auto-Negotiate
1 = restart auto-negotiate process 0 = normal operation. Bit is self-clearing.
Duplex Mode
1 = full duplex, 0 = half duplex. Ignored if Auto Negotiation is enabled (0.12
= 1).
Collision Test
1 = enable COL test, 0 = disable COL test
RESERVED
Basic Control Register
Index (In Decimal):
For maximum power savings, auto-negotiation should be disabled
before enabling the General Power-Down mode.
DESCRIPTION
0
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
DATASHEET
136
Size:
16 bits
R/W/SC
R/W/SC
TYPE
SMSC LAN9420/LAN9420i
R/W
R/W
R/W
R/W
R/W
R/W
RO
RO
DEFAULT
Datasheet
0b
0b
1b
1b
0b
0b
0b
0b
-
-