CATR0 (DDR_PHY) Register Description
| Register Name | CATR0 |
|---|---|
| Offset Address | 0x0000000240 |
| Absolute Address | 0x00FD080240 (DDR_PHY) |
| Width | 32 |
| Type | mixedMixed types. See bit-field details. |
| Reset Value | 0x00141054 |
| Description | CA Training Register 0 |
CATR0 (DDR_PHY) Register Bit-Field Summary
| Field Name | Bits | Type | Reset Value | Description |
|---|---|---|---|---|
| Reserved | 31:21 | roRead-only | 0x0 | Return zeroes on reads. |
| CACD | 20:16 | rwNormal read/write | 0x14 | Minimum time (in terms of number of dram clocks) between two consecutive CA calibration commands. The programmed value is speed grade dependent and must be two clocks more than CAADR field. |
| Reserved | 15:13 | roRead-only | 0x0 | Return zeroes on reads. |
| CAADR | 12:8 | rwNormal read/write | 0x10 | Minimum time (in terms of number of dram clocks) PUB should wait before sampling the CA response after Calibration command has been sent to the memory. The programmed value must be at least equal to tADR CA Training parameter in JEDEC specification. The programmed value is speed grade dependent and should meet the minimum of 20ns requirement. |
| CA1BYTE1 | 7:4 | rwNormal read/write | 0x5 | CA_1 Response Byte Lane 1; Indicates PHY byte lane number to which DRAM byte lane 1 is connected. This field is used ONLY when PGCR0.ADCP is set to 1b1. Valid values are: 4b0000 = CA training responses on DATX8_0 4b0001 = CA training responses on DATX8_1 4b0010 = CA training responses on DATX8_2 4b0011 = CA training responses on DATX8_3 4b0100 = CA training responses on DATX8_4 4b0101 = CA training responses on DATX8_5 4b0110 = CA training responses on DATX8_6 4b0111 = CA training responses on DATX8_7 4b1000 = CA training responses on DATX8_8 |
| CA1BYTE0 | 3:0 | rwNormal read/write | 0x4 | CA_1 Response Byte Lane 0; Indicates PHY byte lane number to which DRAM byte lane 0 is connected. This field is used ONLY when PGCR0.ADCP is set to 1b1. Valid values are: 4b0000 = CA training responses on DATX8_0 4b0001 = CA training responses on DATX8_1 4b0010 = CA training responses on DATX8_2 4b0011 = CA training responses on DATX8_3 4b0100 = CA training responses on DATX8_4 4b0101 = CA training responses on DATX8_5 4b0110 = CA training responses on DATX8_6 4b0111 = CA training responses on DATX8_7 4b1000 = CA training responses on DATX8_8 |