Intel PCI User Manual
Software Developer’s Manual
281
Register Descriptions
Table 13-56. VET Register Bit Description
13.4.12
Flow Control Transmit Timer Value
FCTTV (00170h; R/W)
Provides the Pause slot time value to be included in the transmitted XOFF Pause packets.
The slot time value that is used is a fixed slot of 64-byte time.
Table 13-57. FCTTV Register Bit Description
31
16 15
0
Reserved
VET
Field
Bit(s)
Initial
Value
Value
Description
VET
15:0
X
VLAN EtherType
Should be programmed with 8100h.
Should be programmed with 8100h.
Reserved
31:16
0b
Reserved
Reads as 0b.
Reads as 0b.
31
16 15
0
Reserved
TTV
Field
Bit(s)
Initial
Value
Value
Description
TTV
15:0
X
Transmit Timer Value
Slot time value (Slot time value is 64-byte time) to be inserted into
the transmitted Pause frame. If software wishes to send XON
frame, it should set the FCTTV. TTV value to 0b prior to initializing
the Pause frame.
Slot time value (Slot time value is 64-byte time) to be inserted into
the transmitted Pause frame. If software wishes to send XON
frame, it should set the FCTTV. TTV value to 0b prior to initializing
the Pause frame.
Reserved
31:16
0b
Reserved
Reads as 0b.
Should be written to 0b for future compatibility.
Reads as 0b.
Should be written to 0b for future compatibility.