External Memory Interfaces Agilex™ 7 M-Series FPGA IP User Guide
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3.1.3.4. LPDDR5 Pin Placement
| Lane Number | Pin Index | x32 | 2 Channel x16 |
|---|---|---|---|
| BL7 | 95 | MEM_DQ[31] | MEM_1_MEM_DQ[15] |
| 94 | MEM_DQ[30] | MEM_1_MEM_DQ[14] | |
| 93 | MEM_DQ[29] | MEM_1_MEM_DQ[13] | |
| 92 | MEM_DQ[28] | MEM_1_MEM_DQ[12] | |
| 91 | |||
| 90 | MEM_DMI[3] | MEM_1_MEM_DMI[1] | |
| 89 | MEM_RDQS_C[3] | MEM_1_MEM_RDQS_C[1] | |
| 88 | MEM_RDQS_T[3] | MEM_1_MEM_RDQS_T[1] | |
| 87 | MEM_DQ[27] | MEM_1_MEM_DQ[11] | |
| 86 | MEM_DQ[26] | MEM_1_MEM_DQ[10] | |
| 85 | MEM_DQ[25] | MEM_1_MEM_DQ[9] | |
| 84 | MEM_DQ[24] | MEM_1_MEM_DQ[8] | |
| BL6 | 83 | MEM_DQ[23] | MEM_1_MEM_DQ[7] |
| 82 | MEM_DQ[22] | MEM_1_MEM_DQ[6] | |
| 81 | MEM_DQ[21] | MEM_1_MEM_DQ[5] | |
| 80 | MEM_DQ[20] | MEM_1_MEM_DQ[4] | |
| 79 | |||
| 78 | MEM_DMI[2] | MEM_1_MEM_DMI[0] | |
| 77 | MEM_RDQS_C[2] | MEM_1_MEM_RDQS_C[0] | |
| 76 | MEM_RDQS_T[2] | MEM_1_MEM_RDQS_T[0] | |
| 75 | MEM_DQ[19] | MEM_1_MEM_DQ[3] | |
| 74 | MEM_DQ[18] | MEM_1_MEM_DQ[2] | |
| 73 | MEM_DQ[17] | MEM_1_MEM_DQ[1] | |
| 72 | MEM_DQ[16] | MEM_1_MEM_DQ[0] | |
| BL5 | 71 | ||
| 70 | |||
| 69 | |||
| 68 | MEM_1_MEM_CS[1] | ||
| 67 | MEM_1_CK_C | ||
| 66 | MEM_1_CK_T | ||
| 65 | MEM_1_MEM_CS[0] | ||
| 64 | MEM_1_MEM_CA[6] | ||
| 63 | MEM_1_RESET_N | ||
| 62 | OCT_1_OCT_RZQIN | ||
| 61 | |||
| 60 | |||
| BL4 | 59 | Differential "NSide" Reference Clock Input Site |
|
| 58 | Differential "PSide" Reference Clock Input Site |
||
| 57 | MEM_1_MEM_CA[5] | ||
| 56 | MEM_1_MEM_CA[4] | ||
| 55 | MEM_1_MEM_WCK_C[1] | ||
| 54 | MEM_1_MEM_WCK_T[1] | ||
| 53 | MEM_1_MEM_WCK_C[0] | ||
| 52 | MEM_1_MEM_WCK_T[0] | ||
| 51 | MEM_1_MEM_CA[3] | ||
| 50 | MEM_1_MEM_CA[2] | ||
| 49 | MEM_1_MEM_CA[1] | ||
| 48 | MEM_1_MEM_CA[0] | ||
| BL3 | 47 | ||
| 46 | |||
| 45 | |||
| 44 | MEM_CS[1] | MEM_0_MEM_CS[1] | |
| 43 | MEM_CK_C | MEM_0_CK_C | |
| 42 | MEM_CK_T | MEM_0_CK_T | |
| 41 | MEM_CS[0] | MEM_0_MEM_CS[0] | |
| 40 | MEM_CA[6] | MEM_0_MEM_CA[6] | |
| 39 | MEM_RESET_N | MEM_0_RESET_N | |
| 38 | RZQ Site | OCT_0_OCT_RZQIN | |
| 37 | |||
| 36 | |||
| BL2 | 35 | Differential "N-Side" Reference Clock Input Site | Differential "NSide" Reference Clock Input Site |
| 34 | Differential "P-Side" Reference Clock Input Site | Differential "PSide" Reference Clock Input Site |
|
| 33 | MEM_CA[5] | MEM_0_MEM_CA[5] | |
| 32 | MEM_CA[4] | MEM_0_MEM_CA[4] | |
| 31 | MEM_WCK_C[1] | MEM_0_MEM_WCK_C[1] | |
| 30 | MEM_WCK_T[1] | MEM_0_MEM_WCK_T[1] | |
| 29 | MEM_WCK_C[0] | MEM_0_MEM_WCK_C[0] | |
| 28 | MEM_WCK_T[0] | MEM_0_MEM_WCK_T[0] | |
| 27 | MEM_CA[3] | MEM_0_MEM_CA[3] | |
| 26 | MEM_CA[2] | MEM_0_MEM_CA[2] | |
| 25 | MEM_CA[1] | MEM_0_MEM_CA[1] | |
| 24 | MEM_CA[0] | MEM_0_MEM_CA[0] | |
| BL1 | 23 | MEM_DQ[15] | MEM_0_MEM_DQ[15] |
| 22 | MEM_DQ[14] | MEM_0_MEM_DQ[14] | |
| 21 | MEM_DQ[13] | MEM_0_MEM_DQ[13] | |
| 20 | MEM_DQ[12] | MEM_0_MEM_DQ[12] | |
| 19 | |||
| 18 | MEM_DMI[1] | MEM_0_MEM_DMI[1] | |
| 17 | MEM_RDQS_C[1] | MEM_0_MEM_RDQS_C[1] | |
| 16 | MEM_RDQS_T[1] | MEM_0_MEM_RDQS_T[1] | |
| 15 | MEM_DQ[11] | MEM_0_MEM_DQ[11] | |
| 14 | MEM_DQ[10] | MEM_0_MEM_DQ[10] | |
| 13 | MEM_DQ[9] | MEM_0_MEM_DQ[9] | |
| 12 | MEM_DQ[8] | MEM_0_MEM_DQ[8] | |
| BL0 | 11 | MEM_DQ[7] | MEM_0_MEM_DQ[7] |
| 10 | MEM_DQ[6] | MEM_0_MEM_DQ[6] | |
| 9 | MEM_DQ[5] | MEM_0_MEM_DQ[5] | |
| 8 | MEM_DQ[4] | MEM_0_MEM_DQ[4] | |
| 7 | |||
| 6 | MEM_DMI[0] | MEM_0_MEM_DMI[0] | |
| 5 | MEM_RDQS_C[0] | MEM_0_MEM_RDQS_C[0] | |
| 4 | MEM_RDQS_T[0] | MEM_0_MEM_RDQS_T[0] | |
| 3 | MEM_DQ[3] | MEM_0_MEM_DQ[3] | |
| 2 | MEM_DQ[2] | MEM_0_MEM_DQ[2] | |
| 1 | MEM_DQ[1] | MEM_0_MEM_DQ[1] | |
| 0 | MEM_DQ[0] | MEM_0_MEM_DQ[0] |
It is important to strictly follow the pin placement for a given memory topology when assigning pin locations for your EMIF IP.
The recommended approach is to manually constrain some interface signals and allow the Quartus® Prime Fitter to place the pins. For this method of I/O placement, you must constrain the following signals:
- PLL reference clock
- RZQ pin
- MEM_RESET_N
Do not change the location for the EMIF pin using a .qsf assignment or the Pin Planner if you need to swap the DQ pins within a DQS group or the DQS group to simplify board design.
Refer to the Configuring DQ Pin Swizzling topic in the External Memory Interfaces Agilex™ 7 M-Series FPGA IP Design Example User Guide for more information on how to swap the DQ pin and DQS group.
For dual-rank component interfaces, you cannot have different swizzling specifications for rank 0 and rank 1.