SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
Table 15-76 lists the turnaround time that EMIF introduces on the data bus for various back-to-back accesses. The EMIF takes advantage of the CAS latencies and packs the commands as close as possible on the control bus to introduce the following turnaround time on the data bus.
Chip select 1 is not supported on this device.
| Current Access | Next Access | Turnaround Time (Number of DDR Clock Cycles) |
|---|---|---|
| SDRAM write | SDRAM write to same chip select | 0 |
| SDRAM write | SDRAM write to different chip select | EMIF_SDRAM_TIMING_3[27:24] T_CSTA + 1 |
| SDRAM read | SDRAM read to same chip select | 0 |
| SDRAM read | SDRAM read to different chip select | EMIF_SDRAM_TIMING_3[27:24] T_CSTA + 1 |
| SDRAM write | SDRAM read | EMIF_SDRAM_TIMING_1[2:0] T_WTR + 1 + CL |
| SDRAM read | SDRAM write | EMIF_SDRAM_TIMING_1[31:29] T_RTW + 1 |