MR0 (DDR_PHY) Register Description
| Register Name | MR0 |
|---|
| Offset Address | 0x0000000180 |
|---|
| Absolute Address |
0x00FD080180 (DDR_PHY)
|
|---|
| Width | 32 |
|---|
| Type | mixedMixed types. See bit-field details. |
|---|
| Reset Value | 0x00000052 |
|---|
| Description | LPDDR4 Mode Register 0 |
|---|
MR0 (DDR_PHY) Register Bit-Field Summary
| Field Name | Bits | Type | Reset Value | Description |
|---|
| Reserved | 31:16 | roRead-only | 0x0 | Reserved. Return zeroes on reads. |
| RSVD_15_8 | 15:8 | roRead-only | 0x0 | Reserved. Return zeroes on reads. |
| CATR | 7 | rwNormal read/write | 0x0 | CA Terminating Rank |
| RSVD_6_5 | 6:5 | rwNormal read/write | 0x2 | Reserved. These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0. |
| RZQI | 4:3 | rwNormal read/write | 0x2 | Built-in Self-Test for RZQ |
| RSVD_2_0 | 2:0 | rwNormal read/write | 0x2 | Reserved. These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0. |
Alternate Register MR0_DDR3, reset=0xa52
Alternate Register Field: BL Offset=0 Width=2 read-write
[[*]] Description: Burst Length
Alternate Register Field: CL_2 Offset=2 Width=1 read-write
[[*]] Description: CAS Latency
Alternate Register Field: BT Offset=3 Width=1 read-write
[[*]] Description: Burst Type
Alternate Register Field: CL_6_4 Offset=4 Width=3 read-write
[[*]] Description: CAS Latency
Alternate Register Field: TM Offset=7 Width=1 read-write
[[*]] Description: Operating Mode
Alternate Register Field: DR Offset=8 Width=1 read-write
[[*]] Description: DLL Reset
Alternate Register Field: WR Offset=9 Width=3 read-write
[[*]] Description: Write Recovery and Read to Recharge
Alternate Register Field: PD Offset=12 Width=1 read-write
[[*]] Description: Power-Down Control
Alternate Register Field: RSVD Offset=13 Width=3 read-write
[[*]] Description: Reserved. These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.
Alternate Register Field: RESERVED_31_16 Offset=16 Width=16 read-only
[[*]] Description: Reserved. Return zeroes on reads.
Alternate Register Field: BL Offset=0 Width=2 read-write
[[*]] Description: Burst Length
Alternate Register Field: CL_2 Offset=2 Width=1 read-write
[[*]] Description: CAS Latency
Alternate Register Field: BT Offset=3 Width=1 read-write
[[*]] Description: Burst Type
Alternate Register Field: CL_6_4 Offset=4 Width=3 read-write
[[*]] Description: CAS Latency
Alternate Register Field: TM Offset=7 Width=1 read-write
[[*]] Description: Operating Mode
Alternate Register Field: DR Offset=8 Width=1 read-write
[[*]] Description: DLL Reset
Alternate Register Field: WR_11_9 Offset=9 Width=3 read-write
[[*]] Description: Write Recovery and Read to Recharge
Alternate Register Field: CL_12 Offset=12 Width=1 read-write
[[*]] Description: CAS Latency
Alternate Register Field: WR_13 Offset=13 Width=1 read-write
[[*]] Description: Write Recovery and Read to Precharge
Alternate Register Field: RSVD Offset=14 Width=2 read-write
[[*]] Description: Reserved. These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.
Alternate Register Field: RESERVED_31_16 Offset=16 Width=16 read-only
[[*]] Description: Reserved. Return zeroes on reads.
Alternate Register Field: RSVD Offset=0 Width=16 read-write
[[*]] Description: Reserved. These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.
Alternate Register Field: RESERVED_31_16 Offset=16 Width=16 read-only
[[*]] Description: Reserved. Return zeroes on reads.
Alternate Register Field: RSVD Offset=0 Width=16 read-write
[[*]] Description: Reserved. These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.
Alternate Register Field: RESERVED_31_16 Offset=16 Width=16 read-only
[[*]] Description: Reserved. Return zeroes on reads.