External Memory Interfaces Agilex™ 7 M-Series FPGA IP User Guide

ID 772538
Date 11/18/2024
Public
Document Table of Contents

3.1.3.4. LPDDR5 Pin Placement

Table 13.  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]
Note:

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.