SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
Chip select 1 is not supported on this device.
| Step | Register/ Bit Field / Programming Model | Value |
|---|---|---|
| IF : Calibration per CS | ||
| Determine on which chip select (1 or 0) the calibration is enabled. | EMIF_SDRAM_OUTPUT_IMPEDANCE_CALIBRATION_CONFIG[31:30] ZQ_CS1EN/ZQ_CS0EN | 0x- |
| ELSE : (Calibration on both the CS0 and CS1) | ||
| Enable automatic output impedance calibration for both the chip selects simultaneously. | EMIF_SDRAM_OUTPUT_IMPEDANCE_CALIBRATION_CONFIG[29] ZQ_DUALCALEN | 0x1 |
| ENDIF | ||
| Define the interval (number of refresh periods) between ZQCS commands. | EMIF_SDRAM_OUTPUT_IMPEDANCE_CALIBRATION_CONFIG[15:0] ZQ_REFINTERVAL | 0x- |
| Define the number of ZQCL durations that build the ZQINIT duration. | EMIF_SDRAM_OUTPUT_IMPEDANCE_CALIBRATION_CONFIG[19:18] ZQ_ZQINIT_MULT | 0x- |
| Define the number of ZQCS intervals that build the ZQCL duration. | EMIF_SDRAM_OUTPUT_IMPEDANCE_CALIBRATION_CONFIG[17:16] ZQ_ZQCL_MULT | 0x- |
| Enable the issuing of ZQ-Long Command on Self-Refresh, Active Power-Down, and Precharge Power-Down exit. | EMIF_SDRAM_OUTPUT_IMPEDANCE_CALIBRATION_CONFIG[28] ZQ_SFEXITEN | 0x1 |