TABLE B-1qfe Driver Parameter, Status, and Descriptions (Continued)

Parameter

Status

Description

 

 

 

lp_10fdx_cap

Read only

Link partner capability

lp_10hdx_cap

Read only

Link partner capability

instance

Read and write

Device instance

lance_mode

Read and write

Additional delay before transmitting

 

 

a packet

ipg0

Read and write

Additional delay before transmitting

 

 

a packet

 

 

 

Defining the Current Status

The read-only parameters described in TABLE B-2explain the operational mode of the interface. These parameters define the current status.

TABLE B-2Read-Only Parameters Defining the Current Status

Parameter

Values

Description

 

 

 

link_status

 

Current link status

 

0

= Link down

 

1

= Link up

link_speed

 

Valid only if the link is up

 

0

= 10 Mbps

 

1

= 100 Mbps

link_mode

 

Valid only if the link is up

 

0

= Half duplex

 

1

= Full duplex

 

 

 

Inter-Packet Gap Parameters

The PCI Fast Ethernet and Expansion (PFEX) ASIC supports the programmable Inter-Packet Gap (IPG) parameters ipg1 and ipg2. The total IPG is the sum of ipg1 and ipg2. The total IPG is 9.6 microseconds when the link speed set, by the auto- negotiation protocol, is 10 Mbps. When the link speed is 100 Mbps, the total IPG is 0.96 microseconds.

Appendix B Configuring the Quad FastEthernet Device Driver Parameters 25

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Sun Microsystems Sun Quad manual Defining the Current Status, Inter-Packet Gap Parameters