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Transmit List Format
5-13
List Structures
Figure 5–8. Transmit CSTAT Request Fields
LSBMSB
Reserved
Network
priority
0
Pass
CRC
0011
0
Cmp
Frm
0
012345678910111213
1415
Table 5–5. Transmit CSTAT Request Bits
Bit Name Function
15 x Ignored by adapter. The value in this bit is a don’t care.
14 Frm_Cmp 0 Frame complete: Ignored by adapter. Should be set to 0. Setting the Frm_Cmp bit to
0 is good programming practice.
13 1 Ignored by adapter. Set to 1
12 1 Ignored by adapter. Set to 1
11 0 Ignored by adapter. Set to 0
10 0 Ignored by adapter. Set to 0
9 Pass_CRC Pass CRC: When this bit is set to a 1, the adapter uses the last four bytes of frame data
as the frames CRC. The integrity of this CRC is not checked and it is handled just like
the data payload. If this bit is set to a 0, CRC is generated by the adapter as normal.
8 0 Ignored by adapter. Should be set to 0
7–3 Reserved This field is Ignored by the adapter, but should be set to 0.
2–0
Network
priority
Network priority request: Indicates the network transmission priority to be used for the
frame when network protocol types 2 or 3 are selected. The value in this field is passed
to the external protocol engine across the 802.3u MII on the MTXD[3::1] signal lines dur-
ing transmission requests.
This field has no meaning if network protocol types other than 2 or 3 are selected.