DescriptionResetTypeNameBit/Field
Unicast Pause Frame Detect
DescriptionValue
MAC detects only a Pause frame with the unique multicast
address specified in the 802.3x standard.
0
The MAC detects the pause frames with the station's unicast
address specified in the EMACADDR0H and EMACADDR0L
register, in addition to detecting pause frames with the unique
multicast address.
1
0x0RWUP3
Receive Flow Control Enable
DescriptionValue
The decode function of the pause frame is disabled.0
The MAC decodes the received pause frame and disables its
transmitter for a specified (pause) time.
1
0x0RWRFE2
Transmit Flow Control Enable
DescriptionValue
In full duplex mode, the flow control operation in the MAC is
disabled, and the MAC does not transmit any pause frames.
In half duplex mode, the back-pressure feature is disabled.
0
In the full-duplex mode, the MAC enables the flow control
operation to transmit pause frames.
In half-duplex mode, the MAC enables the back-pressure
operation.
1
0x0RWTFE1
Flow Control Busy or Back-pressure Activate
In the full-duplex mode, this bit should be read as 0x0 before writing to
the Flow Control register. To initiate a Pause control frame, the
Application must set this bit to 0x1. During a transfer of the Control
Frame, this bit continues to be set to signify that a frame transmission
is in progress. After the completion of Pause control frame transmission,
the MAC resets this bit to 0x0. The EMACFLOWCTL register should
not be written to until this bit is cleared.
DescriptionValue
No effect0
In the full-duplex mode, a pause control frame is enabled. In
half-duplex mode, a back-pressure function is enabled if the
TFE bit is set.
1
0RWFCBBPA0
June 18, 20141488
Texas Instruments-Production Data
Ethernet Controller
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