80220 Datasheet, PDF (42/91 Pages) LSI Computer Systems – 100BASE-TX/10BASE-T Ethernet Media Interface Adapter

80220/80221
Table 18. MI Register 18 (Status Output) Structure And Bit Definition
18.15
INT
R
18.14
LNK_FAIL
R/LT
18.13
LOSS_SYNC
R/LT
18.12
CWRD
R/LT
18.11
SSD
R/LT
18.10
ESD
R/LT
18.9
RPOL
R/LT
18.7
18.6
18.5
SPD_DET DPLX_DET
0
R/LT
R/LT
R
18.4
18.3
18.2
18.1
0
0
0
0
R
R
R
R
18.8
JAB
R/LT
18.0
0
R
Bit Symbol
18.15 INT
Name
Interrupt Detect
18.14 LNK_FAIL Link Fail Detect
18.13
LOSS_SYNC
Descrambler
Loss of
Synchronization
Detect
18.12 CWRD
Codeword Error
18.11 SSD
Start Of Stream
Error
18.10 ESD
End Of Stream
Error
18.9 RPOL
18.8 JAB
Reverse Polarity
Detect
Jabber Detect
18.7 SPD_DET
18.6 DPLX_DET
100/10 Speed
Detect
Duplex Detect
18.5
18.4
18.3
18.2
18.1
18.0
Definition
1 = Interrupt Bit(s) Have Changed Since Last
Read Operation.
0 = No Change
1 = Link Not Detected
0 = Normal
1 = Descrambler Has Lost Synchronization
0 = Normal
1 = Invalid 4B5B Code Detected On Receive Data
0 = Normal
1 = No Start Of Stream Delimiter Detected on
Receive Data
0 = Normal
1 = No End Of Stream Delimiter Detected on
Receive Data
0 = Normal
1 = Reverse Polarity Detected
0 = Normal
1 = Jabber Detected
0 = Normal
1 = Device in 100 Mbps Mode (100Base-TX)
0 = Device in 10 Mbps Mode (10Base-T)
1 = Device In Full Duplex
0 = Device In Half Duplex
Reserved for Factory Use
x.15 Bit Is Shifted First
R/W Def.
R
0
R/LT 0
R/LT 0
R/LT 0
R/LT 0
R/LT 0
R/LT 0
R/LT 0
R/LT 1
R/LT 0
R
0
0
0
0
0
0
42
MD400159/E