Xilinx LogiCORE IP MAC v8.5 User Manual page 51

Transmitting Outbound Frames
Table 5-4: Bit Definition for the Transmitter Statistics Vector
tx_statistics_vector
31
30
29:20
19
18:5
4
3
2
1
0
1-Gigabit Ethernet MAC v8.5 User Guide
UG144 April 24, 2009
-- DISCONTINUED PRODUCT --
bit(s) Name
Pause Frame
Byte Valid
Reserved
VLAN Frame
Frame Length
Control Frame
Underrun Frame
Multicast Frame
Broadcast Frame
Successful Frame
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Description
Asserted if the previous frame was a pause
frame that the MAC itself initiated in
response to a pause_req assertion.
Asserted if a MAC frame byte (DA to FCS
inclusive) is in the process of being
transmitted. This is valid on every clock
cycle.
Do not use this as an enable signal to
indicate that data is present on gmii_txd.
Always at logic 0.
Asserted if the previous frame contained a
VLAN identifier in the length/type field
when transmitter VLAN operation is
enabled.
The length of the previous frame in number
of bytes. The count will stick at 16,383 for
any jumbo frames larger than this value.
Asserted if the previous frame had the
special MAC Control Type code 88-08 in the
length/type field.
Asserted if the previous frame contained an
underrun error.
Asserted if the previous frame contained a
multicast address in the destination address
field.
Asserted if the previous frame contained a
broadcast address in the destination address
field.
Asserted if the previous frame was
transmitted without error.
R
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