SMSC LAN9311 User Manual

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

SMSC LAN9311/LAN9311i

85

Revision 1.4 (08-19-08)

 

11110

0

0

0000 DATA

0

0000 DATA

01001

1

1

0001

1

0001

10100

2

2

0010

2

0010

10101

3

3

0011

3

0011

01010

4

4

0100

4

0100

01011

5

5

0101

5

0101

01110

6

6 0110

6

0110

01111

7

7 0111

7

0111

10010

8

8 1000

8

1000

10011

9

9 1001

9

1001

10110

A

A 1010

A

1010

10111

B

B 1011

B

1011

11010

C

C 1100

C

1100

11011

D

D 1101

D

1101

11100

E

E 1110

E

1110

11101

F

F 1111

F

1111

11111

/I/

IDLE

Sent after /T/R/ until the MII Transmitter 
Enable signal (TXEN) is received

11000

/J/

First nibble of SSD, translated to “0101” 
following IDLE, else MII Receive Error 
(RXER)

Sent for rising MII Transmitter Enable 
signal (TXEN)

10001

/K/

Second nibble of SSD, translated to 
“0101” following J, else MII Receive 
Error (RXER)

Sent for rising MII Transmitter Enable 
signal (TXEN)

01101

/T/

First nibble of ESD, causes de-assertion 
of CRS if followed by /R/, else assertion 
of MII Receive Error (RXER)

Sent for falling MII Transmitter Enable 
signal (TXEN)

00111

/R/

Second nibble of ESD, causes de-
assertion of CRS if following /T/, else 
assertion of MII Receive Error (RXER)

Sent for falling MII Transmitter Enable 
signal (TXEN)

00100

/H/

Transmit Error Symbol

Sent for rising MII Transmit Error (TXER)

00110

/V/

INVALID, MII Receive Error (RXER) if 
during MII Receive Data Valid (RXDV)

INVALID

11001

/V/

INVALID, MII Receive Error (RXER) if 
during MII Receive Data Valid (RXDV)

INVALID

00000

/V/

INVALID, MII Receive Error (RXER) if 
during MII Receive Data Valid (RXDV)

INVALID

00001

/V/

INVALID, MII Receive Error (RXER) if 
during MII Receive Data Valid (RXDV)

INVALID