AR #22863 - 8.1i EDK - Ethernet DMA hangs during a Burst Read from mch_opb_ddr when crossing bank address boundaries
8.1i EDK - Ethernet DMA hangs during a Burst Read from mch_opb_ddr when crossing bank address boundaries
| AR# | 22863 |
| Part | IP-Processor |
| Last Modified | 2006-02-16 00:00:00.0 |
| Status | Active |
| Keywords | mch_opb_ddr_v1_00_b, mch opb ddr, mch, Processor IP [[EDK sp1]] |
Description
Keywords: mch_opb_ddr_v1_00_b, mch opb ddr, mch, Processor IP
A Burst Read transaction to OPB DDR when bank address boundaries are crossed with the refresh cycle occurring simultaneously causes the Ethernet SGDMA transaction to hang.
The DDR controller hangs while waiting for more RdAcks and RdReq, and it never negates.
Solution
This problem has been fixed in the latest "mch_opb_ddr_v1_00_b", which is included in the latest EDK 8.1i Service Pack available at:http://www.xilinx.com/xlnx/xil_sw_updates_home.jsp
The first service pack containing the fix is EDK 8.1i Service Pack 1.