DS33R41 Maxim Integrated Products, DS33R41 Datasheet - Page 170

• Manufacturer Part Number: DS33R41
• Description: Network Controller & Processor ICs Inverse-Multiplexing Ethernet Mapper wit
• Manufacturer: Maxim Integrated Products

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 3: No Carrier Queue Flush Bar (NCFQ). If this bit is set to 1, the queue for data passing from Serial Interface
to Ethernet Interface will not be flushed when loss of carrier is detected.
Bit 2: Transmit Packet Deferred Fail Control Enable (TPDFCB). If this bit if set to 1, the current frame is
transmitted immediately instead of being deferred. If this bit is set to 0, the frame is deferred if CRS is asserted and
sent when the CRS is unasserted indicating the media is idle.
Bit 1: Transmit Packet HB Fail Control Bar (TPRHBC). If this bit is set to 1, the current frame will not be
retransmitted if a heartbeat failure is detected.
Bit 0: Transmit Packet Resend Control Bar (TPRCB). If this bit is set to 1, the current frame will not be
retransmitted if any of the following errors have occurred:
Note that blocking retransmission due to collision (applicable in MIII/Half Duplex Mode) can result in unpredictable
system level behavior.
•
•
•
•
•
•
•
—
7
0
Jabber timeout
Loss of carrier
Excessive deferral
Late collision
Excessive collisions
Under run
Collision
—
6
0
SU.TFRC
Transmit Frame Resend Control
151h
—
5
0
170 of 335
—
0
4
NCFQ
3
0
TPDFCB
2
0
TPRHBC
1
0
TPRCB
0
0