LAN9500 Datasheet, PDF (175/213 Pages) SMSC Corporation – USB 2.0 to 10/100 Ethernet Controller Promiscuous mode

LAN950x
7.5.1 BASIC CONTROL REGISTER
Index (In Decimal): 0
Size:
16 bits
Bits
Description
15 PHY Soft Reset
1 = PHY software reset. Bit is self-clearing. When setting this bit do not set
other bits in this register.
Note: The PHY will be in the normal mode after a PHY software reset.
14 Loopback
0 = normal operation
1 = loopback mode
13 Speed Select
0 = 10Mbps
1 = 100Mbps
Note: Ignored if Auto Negotiation is enabled (0.12 = 1).
12 Auto-Negotiation Enable
0 = disable auto-negotiate process
1 = enable auto-negotiate process (overrides 0.13 and 0.8)
11 Power Down
0 = normal operation
1 = General power down mode
Note: The Auto-Negotiation Enable must be cleared before setting the
Power Down.
10 RESERVED
9 Restart Auto-Negotiate
0 = normal operation
1 = restart auto-negotiate process
Note: Bit is self-clearing.
8 Duplex Mode
0 = half duplex
1 = full duplex
Note: Ignored if Auto Negotiation is enabled (0.12 = 1).
7 Collision Test
0 = disable COL test
1 = enable COL test
6:0 RESERVED
Type
SC
R/W
R/W
R/W
R/W
RO
SC
R/W
R/W
RO
Default
0b
0b
1b
1b
0b
-
0b
0b
0b
-
 2010 - 2015 Microchip Technology Inc.
DS00001875A-page 175