RDIMMCR1 (DDR_PHY) Register Description
| Register Name | RDIMMCR1 |
|---|---|
| Offset Address | 0x0000000154 |
| Absolute Address | 0x00FD080154 (DDR_PHY) |
| Width | 32 |
| Type | rwNormal read/write |
| Reset Value | 0x00000000 |
| Description | RDIMM Control Register 1 |
RDIMMCR1 (DDR_PHY) Register Bit-Field Summary
| Field Name | Bits | Type | Reset Value | Description |
|---|---|---|---|---|
| RC15 | 31:28 | rwNormal read/write | 0x0 | Control Word 15: RESERVED for future use. |
| RC14 | 27:24 | rwNormal read/write | 0x0 | Control Word 14: RESERVED for future use. |
| RC13 | 23:20 | rwNormal read/write | 0x0 | Control Word 13: RESERVED for future use. |
| RC12 | 19:16 | rwNormal read/write | 0x0 | Control Word 12: RESERVED for future use. |
| RC11 | 15:12 | rwNormal read/write | 0x0 | Control Word 11 (Operating Voltage VDD Control Word): RC10[1:0] is VDD operating voltage setting as follows: 00 = DDR3 1.5V mode 01 = DDR3L 1.35V mode 10 = RESERVED 11 = RESERVED RC10[3:2]: RESERVED. |
| RC10 | 11:8 | rwNormal read/write | 0x0 | Control Word 10 (RDIMM Operating Speed Control Word): RC10[2:0] is RDIMM operating speed setting as follows: 000 = DDR3/DDR3L-800 001 = DDR3/DDR3L-1066 010 = DDR3/DDR3L-1333 011 = DDR3/DDR3L-1600 100 = RESERVED 101 = RESERVED 110 = RESERVED 111 = RESERVED RC10[3]: Don't care. |
| RC9 | 7:4 | rwNormal read/write | 0x0 | Control Word 9 (Power Saving Settings Control Word): Bit definitions are: RC9[0]: 0 = Floating outputs as defined in RC0, 1 = Weak drive enabled. RC9[1]: 0 = RESERVED. RC9[2]: 0 = CKE power down with IBT ON, QxODT is a function of DxODT, 1 = CKE power down with IBT off, QxODT held LOW. RC9[2] is valid only when RC9[3] is 1. RC9[3]: 0 = CKE power down mode disabled, 1 = CKE power down mode enabled. |
| RC8 | 3:0 | rwNormal read/write | 0x0 | Control Word 8 (Additional Input Bus Termination Setting Control Word): RC8[2:0] is Input Bus Termination (IBT) setting as follows: 000 = IBT as defined in RC2. 001 = RESERVED 010 = 200 Ohm 011 = RESERVED 100 = 300 Ohm 101 = RESERVED 110 = RESERVED 111 = Off RC8[3]: 0 = IBT off when MIRROR is HIGH, 1 = IBT on when MIRROR is high |