Datasheet – SMSC LAN91C111 User Manual

Page 53

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10/100 Non-PCI Ethernet Single Chip MAC + PHY

Datasheet

SMSC LAN91C111 REV C

53

Revision 1.91 (08-18-08)

DATASHEET

LS2A, LS1A, LS0A – LED select Signal Enable. These bits define what LED control signals are routed
to the LEDA output pin on the LAN91C111 Ethernet Controller. The default is 10/100 Link detected.

LS2B, LS1B, LS0B – LED select Signal Enable. These bits define what LED control signals are routed
to the LEDB output pin on the LAN91C111 Ethernet Controller. The default is 10/100 Link detected.

10 Full Duplex

0

0

0

1

X

X

1

0

1

0

1

X

X

1

1

0

X

X

0

1

1

10 Half Duplex

0

0

0

0

X

X

0

0

1

0

0

X

X

0

1

0

X

X

0

0

0

LS2A

LS1A

LS0A

LED SELECT SIGNAL – LEDA

0

0

0

nPLED3+ nPLED0 – Logical OR of 100Mbps Link detected 10Mbps Link detected
(default)

0

0

1

Reserved

0

1

0

nPLED0 - 10Mbps Link detected

0

1

1

nPLED1 - Full Duplex Mode enabled

1

0

0

nPLED2 - Transmit or Receive packet occurred

1

0

1

nPLED3 - 100Mbps Link detected

1

1

0

nPLED4 - Receive packet occurred

1

1

1

nPLED5 - Transmit packet occurred

LS2B

LS1B

LS0B

LED SELECT SIGNAL – LEDB

0

0

0

nPLED3+ nPLED0 – Logical OR of 100Mbps Link detected 10Mbps Link detected
(default)

0

0

1

Reserved

0

1

0

nPLED0 - 10Mbps Link detected

0

1

1

nPLED1 – Full Duplex Mode enabled

1

0

0

nPLED2 – Transmit or Receive packet occurred

1

0

1

nPLED3 - 100Mbps Link detected

1

1

0

nPLED4 - Receive packet occurred

1

1

1

nPLED5 - Transmit packet occurred

WHAT DO YOU

WANT TO DO?

AUTO-NEGOTIATION

CONTROL BITS

SPEED AND DUPLEX MODE CONTROL

FOR THE PHY

DUPLEX

MODE

CONTROL

FOR THE

MAC

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