DS643 Datasheet, PDF (175/216 Pages) Xilinx, Inc – Soft Direct Memory Access (SDMA) support

LogiCORE IP Multi-Port Memory Controller (v6.06.a)
Doubleword Write
Figure 44 shows the following:
• A 64-bit NPI.
• A doubleword write transfer.
• The address is acknowledged in the same cycle as it is requested.
• The address is on a doubleword boundary.
• The RdModWr must be asserted because the value of C_MEM_DATA_WIDTH is unknown.
• There is a Write Transfer Special Case (WrFIFO_Push asserted after AddrAck)
X-Ref Target - Figure 44
MPMC_CLK0
AddrReq
AddrAck
Addr[31:0]
RNW
Size[3:0]
RdModWr
InitDone
WrFIFO_Empty
WrFIFO_AlmostFull
WrFIFO_Push
WrFIFO_Flush
WrFIFO_Data[63:0]
WrFIFO_BE[7:0]
0x8
0x0
D0
0xFF
Figure 44: 64-Bit NPI Doubleword Write
DS643_38_072407
DS643 February 22, 2013
www.xilinx.com
175
Product Specification