SDRAM Controller

Data Structures
struct	Sdramc
	Sdramc hardware registers. More...

Macros
#define	SDRAMC_MR_MODE_Pos   0
#define	SDRAMC_MR_MODE_Msk   (0x7u << SDRAMC_MR_MODE_Pos)
	(SDRAMC_MR) SDRAMC Command Mode
#define	SDRAMC_MR_MODE(value)   ((SDRAMC_MR_MODE_Msk & ((value) << SDRAMC_MR_MODE_Pos)))
#define	SDRAMC_MR_MODE_NORMAL   (0x0u << 0)
	(SDRAMC_MR) Normal mode. Any access to the SDRAM is decoded normally. To activate this mode, command must be followed by a write to the SDRAM.
#define	SDRAMC_MR_MODE_NOP   (0x1u << 0)
	(SDRAMC_MR) The SDRAMC issues a NOP command when the SDRAM device is accessed regardless of the cycle. To activate this mode, command must be followed by a write to the SDRAM.
#define	SDRAMC_MR_MODE_ALLBANKS_PRECHARGE   (0x2u << 0)
	(SDRAMC_MR) The SDRAMC issues an "All Banks Precharge" command when the SDRAM device is accessed regardless of the cycle. To activate this mode, command must be followed by a write to the SDRAM.
#define	SDRAMC_MR_MODE_LOAD_MODEREG   (0x3u << 0)
	(SDRAMC_MR) The SDRAMC issues a "Load Mode Register" command when the SDRAM device is accessed regardless of the cycle. To activate this mode, command must be followed by a write to the SDRAM.
#define	SDRAMC_MR_MODE_AUTO_REFRESH   (0x4u << 0)
	(SDRAMC_MR) The SDRAMC issues an "Auto-Refresh" Command when the SDRAM device is accessed regardless of the cycle. Previously, an "All Banks Precharge" command must be issued. To activate this mode, command must be followed by a write to the SDRAM.
#define	SDRAMC_MR_MODE_EXT_LOAD_MODEREG   (0x5u << 0)
	(SDRAMC_MR) The SDRAMC issues an "Extended Load Mode Register" command when the SDRAM device is accessed regardless of the cycle. To activate this mode, the "Extended Load Mode Register" command must be followed by a write to the SDRAM. The write in the SDRAM must be done in the appropriate bank; most low-power SDRAM devices use the bank 1.
#define	SDRAMC_MR_MODE_DEEP_POWERDOWN   (0x6u << 0)
	(SDRAMC_MR) Deep power-down mode. Enters deep power-down mode.
#define	SDRAMC_TR_COUNT_Pos   0
#define	SDRAMC_TR_COUNT_Msk   (0xfffu << SDRAMC_TR_COUNT_Pos)
	(SDRAMC_TR) SDRAMC Refresh Timer Count
#define	SDRAMC_TR_COUNT(value)   ((SDRAMC_TR_COUNT_Msk & ((value) << SDRAMC_TR_COUNT_Pos)))
#define	SDRAMC_CR_NC_Pos   0
#define	SDRAMC_CR_NC_Msk   (0x3u << SDRAMC_CR_NC_Pos)
	(SDRAMC_CR) Number of Column Bits
#define	SDRAMC_CR_NC(value)   ((SDRAMC_CR_NC_Msk & ((value) << SDRAMC_CR_NC_Pos)))
#define	SDRAMC_CR_NC_COL8   (0x0u << 0)
	(SDRAMC_CR) 8 column bits
#define	SDRAMC_CR_NC_COL9   (0x1u << 0)
	(SDRAMC_CR) 9 column bits
#define	SDRAMC_CR_NC_COL10   (0x2u << 0)
	(SDRAMC_CR) 10 column bits
#define	SDRAMC_CR_NC_COL11   (0x3u << 0)
	(SDRAMC_CR) 11 column bits
#define	SDRAMC_CR_NR_Pos   2
#define	SDRAMC_CR_NR_Msk   (0x3u << SDRAMC_CR_NR_Pos)
	(SDRAMC_CR) Number of Row Bits
#define	SDRAMC_CR_NR(value)   ((SDRAMC_CR_NR_Msk & ((value) << SDRAMC_CR_NR_Pos)))
#define	SDRAMC_CR_NR_ROW11   (0x0u << 2)
	(SDRAMC_CR) 11 row bits
#define	SDRAMC_CR_NR_ROW12   (0x1u << 2)
	(SDRAMC_CR) 12 row bits
#define	SDRAMC_CR_NR_ROW13   (0x2u << 2)
	(SDRAMC_CR) 13 row bits
#define	SDRAMC_CR_NB   (0x1u << 4)
	(SDRAMC_CR) Number of Banks
#define	SDRAMC_CR_NB_BANK2   (0x0u << 4)
	(SDRAMC_CR) 2 banks
#define	SDRAMC_CR_NB_BANK4   (0x1u << 4)
	(SDRAMC_CR) 4 banks
#define	SDRAMC_CR_CAS_Pos   5
#define	SDRAMC_CR_CAS_Msk   (0x3u << SDRAMC_CR_CAS_Pos)
	(SDRAMC_CR) CAS Latency
#define	SDRAMC_CR_CAS(value)   ((SDRAMC_CR_CAS_Msk & ((value) << SDRAMC_CR_CAS_Pos)))
#define	SDRAMC_CR_CAS_LATENCY1   (0x0u << 5)
	(SDRAMC_CR) 1 cycle CAS latency
#define	SDRAMC_CR_CAS_LATENCY2   (0x1u << 5)
	(SDRAMC_CR) 2 cycle CAS latency
#define	SDRAMC_CR_CAS_LATENCY3   (0x2u << 5)
	(SDRAMC_CR) 3 cycle CAS latency
#define	SDRAMC_CR_DBW   (0x1u << 7)
	(SDRAMC_CR) Data Bus Width
#define	SDRAMC_CR_TWR_Pos   8
#define	SDRAMC_CR_TWR_Msk   (0xfu << SDRAMC_CR_TWR_Pos)
	(SDRAMC_CR) Write Recovery Delay
#define	SDRAMC_CR_TWR(value)   ((SDRAMC_CR_TWR_Msk & ((value) << SDRAMC_CR_TWR_Pos)))
#define	SDRAMC_CR_TRC_TRFC_Pos   12
#define	SDRAMC_CR_TRC_TRFC_Msk   (0xfu << SDRAMC_CR_TRC_TRFC_Pos)
	(SDRAMC_CR) Row Cycle Delay and Row Refresh Cycle
#define	SDRAMC_CR_TRC_TRFC(value)   ((SDRAMC_CR_TRC_TRFC_Msk & ((value) << SDRAMC_CR_TRC_TRFC_Pos)))
#define	SDRAMC_CR_TRP_Pos   16
#define	SDRAMC_CR_TRP_Msk   (0xfu << SDRAMC_CR_TRP_Pos)
	(SDRAMC_CR) Row Precharge Delay
#define	SDRAMC_CR_TRP(value)   ((SDRAMC_CR_TRP_Msk & ((value) << SDRAMC_CR_TRP_Pos)))
#define	SDRAMC_CR_TRCD_Pos   20
#define	SDRAMC_CR_TRCD_Msk   (0xfu << SDRAMC_CR_TRCD_Pos)
	(SDRAMC_CR) Row to Column Delay
#define	SDRAMC_CR_TRCD(value)   ((SDRAMC_CR_TRCD_Msk & ((value) << SDRAMC_CR_TRCD_Pos)))
#define	SDRAMC_CR_TRAS_Pos   24
#define	SDRAMC_CR_TRAS_Msk   (0xfu << SDRAMC_CR_TRAS_Pos)
	(SDRAMC_CR) Active to Precharge Delay
#define	SDRAMC_CR_TRAS(value)   ((SDRAMC_CR_TRAS_Msk & ((value) << SDRAMC_CR_TRAS_Pos)))
#define	SDRAMC_CR_TXSR_Pos   28
#define	SDRAMC_CR_TXSR_Msk   (0xfu << SDRAMC_CR_TXSR_Pos)
	(SDRAMC_CR) Exit Self Refresh to Active Delay
#define	SDRAMC_CR_TXSR(value)   ((SDRAMC_CR_TXSR_Msk & ((value) << SDRAMC_CR_TXSR_Pos)))
#define	SDRAMC_LPR_LPCB_Pos   0
#define	SDRAMC_LPR_LPCB_Msk   (0x3u << SDRAMC_LPR_LPCB_Pos)
	(SDRAMC_LPR) Low-power Configuration Bits
#define	SDRAMC_LPR_LPCB(value)   ((SDRAMC_LPR_LPCB_Msk & ((value) << SDRAMC_LPR_LPCB_Pos)))
#define	SDRAMC_LPR_LPCB_DISABLED   (0x0u << 0)
	(SDRAMC_LPR) Low Power Feature is inhibited: no Power-down, Self-refresh or Deep Power-down command is issued to the SDRAM device.
#define	SDRAMC_LPR_LPCB_SELF_REFRESH   (0x1u << 0)
	(SDRAMC_LPR) The SDRAMC issues a Self-refresh command to the SDRAM device, the SDCK clock is deactivated and the SDCKE signal is set low. The SDRAM device leaves the Self Refresh Mode when accessed and enters it after the access.
#define	SDRAMC_LPR_LPCB_POWER_DOWN   (0x2u << 0)
	(SDRAMC_LPR) The SDRAMC issues a Power-down Command to the SDRAM device after each access, the SDCKE signal is set to low. The SDRAM device leaves the Power-down Mode when accessed and enters it after the access.
#define	SDRAMC_LPR_LPCB_DEEP_POWER_DOWN   (0x3u << 0)
	(SDRAMC_LPR) The SDRAMC issues a Deep Power-down command to the SDRAM device. This mode is unique to low-power SDRAM.
#define	SDRAMC_LPR_PASR_Pos   4
#define	SDRAMC_LPR_PASR_Msk   (0x7u << SDRAMC_LPR_PASR_Pos)
	(SDRAMC_LPR) Partial Array Self-refresh (only for low-power SDRAM)
#define	SDRAMC_LPR_PASR(value)   ((SDRAMC_LPR_PASR_Msk & ((value) << SDRAMC_LPR_PASR_Pos)))
#define	SDRAMC_LPR_TCSR_Pos   8
#define	SDRAMC_LPR_TCSR_Msk   (0x3u << SDRAMC_LPR_TCSR_Pos)
	(SDRAMC_LPR) Temperature Compensated Self-Refresh (only for low-power SDRAM)
#define	SDRAMC_LPR_TCSR(value)   ((SDRAMC_LPR_TCSR_Msk & ((value) << SDRAMC_LPR_TCSR_Pos)))
#define	SDRAMC_LPR_DS_Pos   10
#define	SDRAMC_LPR_DS_Msk   (0x3u << SDRAMC_LPR_DS_Pos)
	(SDRAMC_LPR) Drive Strength (only for low-power SDRAM)
#define	SDRAMC_LPR_DS(value)   ((SDRAMC_LPR_DS_Msk & ((value) << SDRAMC_LPR_DS_Pos)))
#define	SDRAMC_LPR_TIMEOUT_Pos   12
#define	SDRAMC_LPR_TIMEOUT_Msk   (0x3u << SDRAMC_LPR_TIMEOUT_Pos)
	(SDRAMC_LPR) Time to Define When Low-power Mode Is Enabled
#define	SDRAMC_LPR_TIMEOUT(value)   ((SDRAMC_LPR_TIMEOUT_Msk & ((value) << SDRAMC_LPR_TIMEOUT_Pos)))
#define	SDRAMC_LPR_TIMEOUT_LP_LAST_XFER   (0x0u << 12)
	(SDRAMC_LPR) The SDRAMC activates the SDRAM low-power mode immediately after the end of the last transfer.
#define	SDRAMC_LPR_TIMEOUT_LP_LAST_XFER_64   (0x1u << 12)
	(SDRAMC_LPR) The SDRAMC activates the SDRAM low-power mode 64 clock cycles after the end of the last transfer.
#define	SDRAMC_LPR_TIMEOUT_LP_LAST_XFER_128   (0x2u << 12)
	(SDRAMC_LPR) The SDRAMC activates the SDRAM low-power mode 128 clock cycles after the end of the last transfer.
#define	SDRAMC_IER_RES   (0x1u << 0)
	(SDRAMC_IER) Refresh Error Status
#define	SDRAMC_IDR_RES   (0x1u << 0)
	(SDRAMC_IDR) Refresh Error Status
#define	SDRAMC_IMR_RES   (0x1u << 0)
	(SDRAMC_IMR) Refresh Error Status
#define	SDRAMC_ISR_RES   (0x1u << 0)
	(SDRAMC_ISR) Refresh Error Status (cleared on read)
#define	SDRAMC_MDR_MD_Pos   0
#define	SDRAMC_MDR_MD_Msk   (0x3u << SDRAMC_MDR_MD_Pos)
	(SDRAMC_MDR) Memory Device Type
#define	SDRAMC_MDR_MD(value)   ((SDRAMC_MDR_MD_Msk & ((value) << SDRAMC_MDR_MD_Pos)))
#define	SDRAMC_MDR_MD_SDRAM   (0x0u << 0)
	(SDRAMC_MDR) SDRAM
#define	SDRAMC_MDR_MD_LPSDRAM   (0x1u << 0)
	(SDRAMC_MDR) Low-power SDRAM
#define	SDRAMC_CFR1_TMRD_Pos   0
#define	SDRAMC_CFR1_TMRD_Msk   (0xfu << SDRAMC_CFR1_TMRD_Pos)
	(SDRAMC_CFR1) Load Mode Register Command to Active or Refresh Command
#define	SDRAMC_CFR1_TMRD(value)   ((SDRAMC_CFR1_TMRD_Msk & ((value) << SDRAMC_CFR1_TMRD_Pos)))
#define	SDRAMC_CFR1_UNAL   (0x1u << 8)
	(SDRAMC_CFR1) Support Unaligned Access
#define	SDRAMC_CFR1_UNAL_UNSUPPORTED   (0x0u << 8)
	(SDRAMC_CFR1) Unaligned access is not supported.
#define	SDRAMC_CFR1_UNAL_SUPPORTED   (0x1u << 8)
	(SDRAMC_CFR1) Unaligned access is supported.
#define	SDRAMC_OCMS_SDR_SE   (0x1u << 0)
	(SDRAMC_OCMS) SDRAM Memory Controller Scrambling Enable
#define	SDRAMC_OCMS_KEY1_KEY1_Pos   0
#define	SDRAMC_OCMS_KEY1_KEY1_Msk   (0xffffffffu << SDRAMC_OCMS_KEY1_KEY1_Pos)
	(SDRAMC_OCMS_KEY1) Off-chip Memory Scrambling (OCMS) Key Part 1
#define	SDRAMC_OCMS_KEY1_KEY1(value)   ((SDRAMC_OCMS_KEY1_KEY1_Msk & ((value) << SDRAMC_OCMS_KEY1_KEY1_Pos)))
#define	SDRAMC_OCMS_KEY2_KEY2_Pos   0
#define	SDRAMC_OCMS_KEY2_KEY2_Msk   (0xffffffffu << SDRAMC_OCMS_KEY2_KEY2_Pos)
	(SDRAMC_OCMS_KEY2) Off-chip Memory Scrambling (OCMS) Key Part 2
#define	SDRAMC_OCMS_KEY2_KEY2(value)   ((SDRAMC_OCMS_KEY2_KEY2_Msk & ((value) << SDRAMC_OCMS_KEY2_KEY2_Pos)))

Detailed Description

SOFTWARE API DEFINITION FOR SDRAM Controller