2.2 BSP Rel. 1.0 for PPMC-275 Programmer's Guide
2.2 BSP Rel. 1.0 for PPMC-275 Programmer's Guide
2.2 BSP Rel. 1.0 for PPMC-275 Programmer's Guide
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API Call Reference List of APIs<br />
Table 11:SDMA Driver Structure: SDMA_CONFIGURATION (cont.)<br />
Macro Field Description<br />
BLMT Tx Big/Little Endian Transmit<br />
Mode<br />
The MV-64360 supports big or<br />
little endian configuration per<br />
channel <strong>for</strong> maximum system<br />
flexibility. The BLMT bit only<br />
affects data movements.<br />
0 - Big Endian convention.<br />
1 - Little Endian convention.<br />
BLMR Rx Big Little/Endian Receive<br />
Mode<br />
The MV-64360 supports big or<br />
little endian configuration per<br />
channel <strong>for</strong> maximum system<br />
flexibility. The BLMR bit only<br />
affects data movements.<br />
0 - Big Endian convention.<br />
1 - Little Endian convention<br />
RC Retransmit Count<br />
In collision modes (LAP-D),<br />
after executing a backoff procedure<br />
RC times, the Tx SDMA<br />
will close the buffer with a<br />
Retransmit Limit (RL) error, a<br />
maskable interrupt will be generated,<br />
and the SDMA will go to<br />
OFF state. A new Transmit<br />
Demand command should be<br />
issued in order to start a new<br />
transmission process. When RC<br />
field is 0000, the MV-64360 tries<br />
to retransmit <strong>for</strong>ever. The CPU<br />
needs to issue an abort command<br />
in order to stop the<br />
retransmit process.<br />
VxWorks 5.5/Tornado <strong>2.2</strong> <strong>BSP</strong> <strong>Rel</strong>. <strong>1.0</strong> <strong>for</strong> <strong>PPMC</strong>-<strong>275</strong> 5 - 57
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