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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List of APIs API Call Reference<br />
Table 10:SDMA Driver Structure: MPSC_SDCMR (cont.)<br />
Macro Field Description<br />
ENABLE_RX_DMA ERD Enable Rx DMA<br />
When set to ‘1’, the Rx<br />
SDMA will fetch the 1st<br />
descriptor and will be<br />
ready <strong>for</strong> a receive frame.<br />
The MV-64360 clears ERD<br />
when the MV-64360<br />
receive SDMA has a<br />
resource error or when the<br />
CPU issues an abort command.<br />
reserved1<br />
Table 11:SDMA Driver Structure: SDMA_CONFIGURATION<br />
Macro Field Description<br />
reserved0<br />
BURST_SIZE BSZ Burst Size<br />
Sets the maximum burst size <strong>for</strong><br />
SDMA transactions:<br />
00 - Burst is limited to 1 64bit<br />
words.<br />
01 - Burst is limited to 2 64bit<br />
words.<br />
10 - Burst is limited to 4 64bit<br />
words.<br />
11 - Burst is limited to 8 64bit<br />
words.<br />
reserved1<br />
RIFB RIFB Receive Interrupt on<br />
Frame Boundaries<br />
When set, the SDMA Rx generates<br />
interrupts only on frame<br />
boundaries (i.e. after writing the<br />
frame status to the descriptor).<br />
POVR PCI Override<br />
When set, causes the SDMA to<br />
direct all its accesses in PCI_0<br />
direction, overriding normal<br />
address decoding process.<br />
5 - 56 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>
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