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IXF1104 4-Port Gigabit Ethernet Media Access Controller
Datasheet 74
Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
Table 23. Valid Decodes for TXPAUSEADD[2:0]
TXPAUSEADD_2:0 Operation of TX Pause Control Interface
0x0
Transmits a PAUSE frame on every port with a pause_time = ZERO (XON)
(Cancels all previous pause commands).
0x1
Transmits a PAUSE frame on port 0 with pause_time equal to the value programmed
in the port 0 “FC TX Timer Value ($ Port_Index + 0x07)" (XOFF).
0x2
Transmits a PAUSE frame on port 1 with pause_time equal to the value programmed
in the port 1 “FC TX Timer Value ($ Port_Index + 0x07)" (XOFF).
0x3
Transmits a PAUSE frame on port 2 with pause_time equal to the value programmed
in the port 2 “FC TX Timer Value ($ Port_Index + 0x07)" (XOFF).
0x4
Transmits a PAUSE frame on port 3 with pause_time equal to the value programmed
in the port 3 “FC TX Timer Value ($ Port_Index + 0x07)" (XOFF).
0x5 to 0x6
Reserved. Do not use these addresses. The TX Pause Control interface will not
operate under these conditions.
0x7
Transmits a PAUSE frame on every port with pause_time equal to the value
programmed in the “FC TX Timer Value ($ Port_Index + 0x07)" for each port (XOFF).
Figure 10. Transmit Pause Control Interface
B3234-01
TXPAUSEFR
TXPAUSEADD0
TXPAUSEADD1
TXPAUSEADD2
This example shows the following conditions:
Strobe 1:
Port 0: Transmit Pause Packet (XOFF)
Strobe 2:
All Ports: Transmit Pause Packet with pause_time = 0 (XON)
Strobe 3:
Port 3: Transmit Pause Packet (XOFF)