W90N745CD/W90N745CDG
Tx Descriptor Word 2
31
30
29
28
27
Reserved
19
26
SQE
18
25
PAU
17
24
TXHA
16
CCNT
23
LC
15
22
TXABT
14
21
NCS
13
20
EXDEF
12
Reserved
10
TXCP
11
DEF
9
TXINTR
8
TBC
7
6
5
4
3
2
1
0
TBC
CCNT [31:28]: Collision Count
The CCNT indicates the how many collision occurred consecutively during a packet transmission. If
the packet incurred 16 consecutive collisions during transmission, the CCNT will be 4’h0 and bit
TXABT will be set to 1.
SQE [26]: SQE Error
The SQE indicates the SQE error found at end of packet transmission on 10Mbps half-duplex mode.
The SQE error check will only be done while both bit EnSQE of MCMDR is enabled and EMC is
operating on 10Mbps half-duplex mode.
1’b0: No SQE error found at end of packet transmission.
1’b0: SQE error found at end of packet transmission.
PAU [25]: Transmission Paused
THE PAU INDICATES THE NEXT NORMAL PACKET transmission process will be paused temporally
because EMC received a PAUSE control frame, or S/W set bit SDPZ of MCMDR and make EMC to
transmit a PAUSE control frame out.
1’b0: Next normal packet transmission process will go on.
1’b1: Next normal packet transmission process will be paused.
TXHA [24]: Transmission Halted
The TXHA indicates the next normal packet transmission process will be halted because the bit TXON
of MCMDR is disabled be S/W.
1’b0: Next normal packet transmission process will go on.
1’b1: Next normal packet transmission process will be halted.
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