lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 85

• Manufacturer Part Number: lan9312
• Description: Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
GROUP
CODE
01001
10100
10101
01010
01011
10010
10011
10110
11010
11000
10001
01101
00100
00110
11001
00000
00001
01110
10111
11011
11100
11101
00111
11110
01111
11111
SYM
/K/
/R/
/H/
/V/
/V/
/V/
/V/
/T/
/J/
/I/
A
B
C
D
E
0
1
2
3
4
5
6
7
8
9
F
IDLE
First nibble of SSD, translated to “0101”
following IDLE, else MII Receive Error
(RXER)
Second nibble of SSD, translated to
“0101” following J, else MII Receive
Error (RXER)
First nibble of ESD, causes de-assertion
of CRS if followed by /R/, else assertion
of MII Receive Error (RXER)
Second nibble of ESD, causes de-
assertion of CRS if following /T/, else
assertion of MII Receive Error (RXER)
Transmit Error Symbol
INVALID, MII Receive Error (RXER) if
during MII Receive Data Valid (RXDV)
INVALID, MII Receive Error (RXER) if
during MII Receive Data Valid (RXDV)
INVALID, MII Receive Error (RXER) if
during MII Receive Data Valid (RXDV)
INVALID, MII Receive Error (RXER) if
during MII Receive Data Valid (RXDV)
A
B
C
D
E
0
1
2
3
4
5
6
7
8
9
F
INTERPRETATION
Table 7.2 4B/5B Code Table
RECEIVER
0000
0001
0010
0011
0100
0101
0110
1000
1001
1010
1011
1100
1101
0111
1110
1111
DATASHEET
85
DATA
Sent after /T/R/ until the MII Transmitter
Enable signal (TXEN) is received
Sent for rising MII Transmitter Enable
signal (TXEN)
Sent for rising MII Transmitter Enable
signal (TXEN)
Sent for falling MII Transmitter Enable
signal (TXEN)
Sent for falling MII Transmitter Enable
signal (TXEN)
Sent for rising MII Transmit Error (TXER)
INVALID
INVALID
INVALID
INVALID
A
B
C
D
E
0
1
2
3
4
5
6
7
8
9
F
INTERPRETATION
TRANSMITTER
0000
0001
0010
0100
0101
1000
1001
1010
0011
0110
0111
1011
1100
1101
1110
1111
Revision 1.2 (04-08-08)
DATA