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STLS2F02 数据表(PDF) 26 Page - STMicroelectronics |
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STLS2F02 数据表(HTML) 26 Page - STMicroelectronics |
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26 / 49 page ![]() DDR2 SDRAM controller interface description STLS2F02 26/49 CONF_CTL_02[31:0] Offset: 0x20 DDR2 667:0x00000000 NO_CMD_INIT 24:24 0x0 0x0-0x1 Disable DRAM cmds until TDLL has expired during initialization. INTRPTWRITENA 16:16 0x0 0x0-0x1 Allow the controller to interrupt a combined write cmd with auto pre- charge with another write cmd. INTRPTREADA 8:8 0x0 0x0-0x1 Allow the controller to interrupt a combined read with auto pre-charge cmd with another read cmd. INTRPTAPBURST 0:0 0x0 0x0-0x1 Allow the controller to interrupt an auto pre-charge cmd with another cmd. CONF_CTL_02[63:32] Offset: 0x20 DDR2 667:0x01000101 PRIORITY_EN 56:56 0x0 0x0-0x1 Enable priority for cmd queue placement logic. POWER_DOWN 48:48 0x0 0x0-0x1 Disable clock enable and set DRAMs in power-down state. PLACEMENT_EN 40:40 0x0 0x0-0x1 Enable placement logic for cmd queue. ODT_ADD_TURN_CLK_EN 32:32 0x0 0x0-0x1 Enable extra turn-around clock between back-to-back reads/writes to different chip selects. CONF_CTL_03[31:0] Offset: 0x30 DDR2 667:0x01000000 RW_SAME_EN 24:24 0x0 0x0-0x1 Enable read/write grouping for cmd queue placement logic. REG_DIMM_EN 16:16 0x0 0x0-0x1 Enable registered DIMM operation of the controller. REDUC 8:8 0x0 0x0-0x1 Enable the half datapath (32-bit) feature of the controller. PWRUP_SREFRESH_EXIT 0:0 0x0 0x0-0x1 Powerup via self-refresh instead of full memory initialization. CONF_CTL_03[63:32] Offset: 0x30 DDR2 667:0x01010000 SWAP_PORT_RW_SAME_EN 56:56 0x0 0x0-0x1 Enable command swapping logic between commands of the same type from the same port in execution unit. SWAP_EN 48:48 0x0 0x0-0x1 Enable command swapping logic in execution unit. START 40:40 0x0 0x0-0x1 Initiate cmd processing in the controller. SREFRESH 32:32 0x0 0x0-0x1 Place DRAMs in self-refresh mode. CONF_CTL_04[31:0] Offset: 0x40 DDR2 667:0x00010101 WRITE_MODEREG 24:24 0x0 0x0-0x1 Write EMRS data to the DRAMs. WRITE-ONLY Table 12. DDR SDRAM configuration parameter register format (continued) Parameters Bits Default value Range Description |
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