Intel PCI User Manual

374

•

Configure the Collision Threshold (TCTL.CT) to the desired value. Ethernet standard is 10h. 
This setting only has meaning in half duplex mode.

•

Configure the Collision Distance (TCTL.COLD) to its expected value. For full duplex 

operation, this value should be set to 40h. For gigabit half duplex, this value should be set to 
200h. For 10/100 half duplex, this value should be set to 40h.

Program the Transmit IPG (TIPG) register with the following decimal values to get the minimum 

legal Inter Packet Gap:

IPGT

10

10

6

8

IPGR1

10

10

8

a

a.

Applicable to the 82541xx and 82547GI/EI.

8

a

IPGR2

10

10

6

a

6

a