High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
Table 4.2 CRS Behavior
CRS BEHAVIOR
MODE
SPEED
DUPLEX
ACTIVITY
(Note 4.1)
Manual
Manual
10 Mbps
10 Mbps
10 Mbps
10 Mbps
100 Mbps
100 Mbps
100 Mbps
100 Mbps
10 Mbps
10 Mbps
10 Mbps
10 Mbps
100 Mbps
100 Mbps
100 Mbps
100 Mbps
Half-Duplex
Half-Duplex
Full-Duplex
Full-Duplex
Half-Duplex
Half-Duplex
Full-Duplex
Full-Duplex
Half-Duplex
Half-Duplex
Full-Duplex
Full-Duplex
Half-Duplex
Half-Duplex
Full-Duplex
Full-Duplex
Transmitting
Receiving
Active
Active
Low
Manual
Transmitting
Receiving
Manual
Active
Active
Active
Low
Manual
Transmitting
Receiving
Manual
Manual
Transmitting
Receiving
Manual
Active
Active
Active
Low
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Auto-Negotiation
Transmitting
Receiving
Transmitting
Receiving
Active
Active
Active
Low
Transmitting
Receiving
Transmitting
Receiving
Active
Note 4.1 The LAN9118 10/100 PHY CRS signal operates in two modes: Active and Low. When in
Active mode, CRS will transition high and low upon line activity, where a high value
indicates a carrier has been detected. In Low mode, CRS stays low and does not indicate
carrier detection. The CRS signal cannot be used as a verification method of transmitted
packets when transmitting in 10 or 100 Mbps in full-duplex mode.
Revision 1.3 (05-31-07)
SMSC LAN9118
DATA6S6HEET
SMSC [ SMSC CORPORATION ]
