BECKHOFF EtherCAT IP Core for Altera FPGAs v3.0.10 - Manual (Page 133)

PDI Description
Slave Controller – IP Core for Altera FPGAs III-121
CLK_PDI_EXT
ARREADY
ADR ARADR
RVALID
RDATA DATA
t Read
ARVALID
t
Clk
Figure 58: AXI Read Access
CLK_PDI_EXT
AWREADY
WREADY
ADR
DATA
AWADR
WDATA
BVALID
t Write
AWVALID
WVALID
t
Clk
Figure 59: AXI Write Access