DIMM=Dual Inline Memory Module 168 PIN DIMM at the computer. Front Side (left side 1-42, right side 43-84) Back Side (left side 85-126, right side 127-168) Front, Left Pin | Non-Parity | 72 ECC? | 80 ECC? | Description | 1 | VSS | VSS | VSS | Ground | 2 | DQ0 | DQ0 | DQ0 | Data 0 | 3 | DQ1 | DQ1 | DQ1 | Data 1 | 4 | DQ2 | DQ2 | DQ2 | Data 2 | 5 | DQ3 | DQ3 | DQ3 | Data 3 | 6 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 7 | DQ4 | DQ4 | DQ4 | Data 4 | 8 | DQ5 | DQ5 | DQ5 | Data 5 | 9 | DQ6 | DQ6 | DQ6 | Data 6 | 10 | DQ7 | DQ7 | DQ7 | Data 7 | 11 | DQ8 | DQ8 | DQ8 | Data 8 | 12 | VSS | VSS | VSS | Ground | 13 | DQ9 | DQ9 | DQ9 | Data 9 | 14 | DQ10 | DQ10 | DQ10 | Data 10 | 15 | DQ11 | DQ11 | DQ11 | Data 11 | 16 | DQ12 | DQ12 | DQ12 | Data 12 | 17 | DQ13 | DQ13 | DQ13 | Data 13 | 18 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 19 | DQ14 | DQ14 | DQ14 | Data 14 | 20 | DQ15 | DQ15 | DQ15 | Data 15 | 21 | n/c | CB0 | CB0 | Parity/Check Bit Input/Output 0 | 22 | n/c | CB1 | CB1 | Parity/Check Bit Input/Output 01 | 23 | VSS | VSS | VSS | Ground | 24 | n/c | n/c | CB8 | Parity/Check Bit Input/Output 8 | 25 | n/c | n/c | CB9 | Parity/Check Bit Input/Output 9 | 26 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 27 | /WE | /WE | /WE | Read/Write | 28 | DQMB0 | DQMB0 | DQMB0 | Byte Mask signal 0 | 29 | DQMB1 | DQMB1 | DQMB1 | Byte Mask signal 1 | 30 | /S0 | /S0 | /S0 | Chip Select 0 | 31 | DU | DU | DU | Don't Use | 32 | VSS | VSS | VSS | Ground | 33 | A0 | A0 | A0 | Address 0 | 34 | A2 | A2 | A2 | Address 2 | 35 | A4 | A4 | A4 | Address 4 | 36 | A6 | A6 | A6 | Address 6 | 37 | A8 | A8 | A8 | Address 8 | 38 | A10/AP | A10/AP | A10/AP | Address 10 | 39 | BA1 | BA1 | BA1 | Bank Address 1 | 40 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 41 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 42 | CK0 | CK0 | CK0 | Clock signal 0 | Front, Right Pin | Non-Parity | 72 ECC? | 80 ECC? | Description | 43 | VSS | VSS | VSS | Ground | 44 | DU | DU | DU | Don't Use | 45 | /S2 | /S2 | /S2 | Chip Select 2 | 46 | DQMB2 | DQMB2 | DQMB2 | Byte Mask signal 2 | 47 | DQMB3 | DQMB3 | DQMB3 | Byte Mask signal 3 | 48 | DU | DU | DU | Don't Use | 49 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 50 | n/c | n/c | CB10 | Parity/Check Bit Input/Output 10 | 51 | n/c | n/c | CB11 | Parity/Check Bit Input/Output 11 | 52 | n/c | CB2 | CB2 | Parity/Check Bit Input/Output 2 | 53 | n/c | CB3 | CB3 | Parity/Check Bit Input/Output 3 | 54 | VSS | VSS | VSS | Ground | 55 | DQ16 | DQ16 | DQ16 | Data 16 | 56 | DQ17 | DQ17 | DQ17 | Data 17 | 57 | DQ18 | DQ18 | DQ18 | Data 18 | 58 | DQ19 | DQ19 | DQ19 | Data 19 | 59 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 60 | DQ20 | DQ20 | DQ20 | Data 20 | 61 | n/c | n/c | n/c | Not connected | 62 | Vref,NC | Vref,NC | Vref,NC | | 63 | CKE1 | CKE1 | CKE1 | Clock Enable Signal 1 | 64 | VSS | VSS | VSS | Ground | 65 | DQ21 | DQ21 | DQ21 | Data 21 | 66 | DQ22 | DQ22 | DQ22 | Data 22 | 67 | DQ23 | DQ23 | DQ23 | Data 23 | 68 | VSS | VSS | VSS | Ground | 69 | DQ24 | DQ24 | DQ24 | Data 24 | 70 | DQ25 | DQ25 | DQ25 | Data 25 | 71 | DQ26 | DQ26 | DQ26 | Data 26 | 72 | DQ27 | DQ27 | DQ27 | Data 27 | 73 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 74 | DQ28 | DQ28 | DQ28 | Data 28 | 75 | DQ29 | DQ29 | DQ29 | Data 29 | 76 | DQ30 | DQ30 | DQ30 | Data 30 | 77 | DQ31 | DQ31 | DQ31 | Data 31 | 78 | VSS | VSS | VSS | Ground | 79 | CK2 | CK2 | CK2 | Clock signal 2 | 80 | n/c | n/c | n/c | Not connected | 81 | n/c | n/c | n/c | Not connected | 82 | SDA | SDA | SDA | Serial Data | 83 | SCL | SCL | SCL | Serial Clock | 84 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | Back, Left Pin | Non-Parity | 72 ECC? | 80 ECC? | Description | 85 | VSS | VSS | VSS | Ground | 86 | DQ32 | DQ32 | DQ32 | Data 32 | 87 | DQ33 | DQ33 | DQ33 | Data 33 | 88 | DQ34 | DQ34 | DQ34 | Data 34 | 89 | DQ35 | DQ35 | DQ35 | Data 35 | 90 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 91 | DQ36 | DQ36 | DQ36 | Data 36 | 92 | DQ37 | DQ37 | DQ37 | Data 37 | 93 | DQ38 | DQ38 | DQ38 | Data 38 | 94 | DQ39 | DQ39 | DQ39 | Data 39 | 95 | DQ40 | DQ40 | DQ40 | Data 40 | 96 | VSS | VSS | VSS | Ground | 97 | DQ41 | DQ41 | DQ41 | Data 41 | 98 | DQ42 | DQ42 | DQ42 | Data 42 | 99 | DQ43 | DQ43 | DQ43 | Data 43 | 100 | DQ44 | DQ44 | DQ44 | Data 44 | 101 | DQ45 | DQ45 | DQ45 | Data 45 | 102 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 103 | DQ46 | DQ46 | DQ46 | Data 46 | 104 | DQ47 | DQ47 | DQ47 | Data 47 | 105 | n/c | CB4 | CB4 | Parity/Check Bit Input/Output 4 | 106 | n/c | CB5 | CB5 | Parity/Check Bit Input/Output 5 | 107 | VSS | VSS | VSS | Ground | 108 | n/c | n/c | CB12 | Parity/Check Bit Input/Output 12 | 109 | n/c | n/c | CB13 | Parity/Check Bit Input/Output 13 | 110 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 111 | /CAS | /CAS | /CAS | Column Address Strobe | 112 | DQMB4 | DQMB4 | DQMB4 | Byte Mask signal 4 | 113 | DQMB5 | DQMB5 | DQMB5 | Byte Mask signal 5 | 114 | /S1 | /S1 | /S1 | Chip Select 1 | 115 | /RAS | /RAS | /RAS | Row Address Strobe | 116 | VSS | VSS | VSS | Ground | 117 | A1 | A1 | A1 | Address 1 | 118 | A3 | A3 | A3 | Address 3 | 119 | A5 | A5 | A5 | Address 5 | 120 | A7 | A7 | A7 | Address 7 | 121 | A9 | A9 | A9 | Address 9 | 122 | BA0 | BA0 | BA0 | Bank Address 0 | 123 | A11 | A11 | A11 | Address 11 | 124 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 125 | CK1 | CK1 | CK1 | Clock signal 1 | 126 | A12 | A12 | A12 | Address 12 | Back, Right Pin | Non-Parity | 72 ECC? | 80 ECC? | Description | 127 | VSS | VSS | VSS | Ground | 128 | CKE0 | CKE0 | CKE0 | Clock Enable Signal 0 | 129 | /S3 | /S3 | /S3 | Chip Select 3 | 130 | DQMB6 | DQMB6 | DQMB6 | Byte Mask signal 6 | 131 | DQMB7 | DQMB7 | DQMB7 | Byte Mask signal 7 | 132 | A13 | A13 | A13 | Address 13 | 133 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 134 | n/c | n/c | CB14 | Parity/Check Bit Input/Output 14 | 135 | n/c | n/c | CB15 | Parity/Check Bit Input/Output 15 | 136 | n/c | CB6 | CB6 | Parity/Check Bit Input/Output 6 | 137 | n/c | CB7 | CB7 | Parity/Check Bit Input/Output 7 | 138 | VSS | VSS | VSS | Ground | 139 | DQ48 | DQ48 | DQ48 | Data 48 | 140 | DQ49 | DQ49 | DQ49 | Data 49 | 141 | DQ50 | DQ50 | DQ50 | Data 50 | 142 | DQ51 | DQ51 | DQ51 | Data 51 | 143 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 144 | DQ52 | DQ52 | DQ52 | Data 52 | 145 | n/c | n/c | n/c | Not connected | 146 | Vref,NC | Vref,NC | Vref,NC | | 147 | n/c | n/c | n/c | Not connected | 148 | VSS | VSS | VSS | Ground | 149 | DQ53 | DQ53 | DQ53 | Data 53 | 150 | DQ54 | DQ54 | DQ54 | Data 54 | 151 | DQ55 | DQ55 | DQ55 | Data 55 | 152 | VSS | VSS | VSS | Ground | 153 | DQ56 | DQ56 | DQ56 | Data 56 | 154 | DQ57 | DQ57 | DQ57 | Data 57 | 155 | DQ58 | DQ58 | DQ58 | Data 58 | 156 | DQ59 | DQ59 | DQ59 | Data 59 | 157 | VDD | VDD | VDD | +5 VDC or +3.3 VDC | 158 | DQ60 | DQ60 | DQ60 | Data 60 | 159 | DQ61 | DQ61 | DQ61 | Data 61 | 160 | DQ62 | DQ62 | DQ62 | Data 62 | 161 | DQ63 | DQ63 | DQ63 | Data 63 | 162 | VSS | VSS | VSS | Ground | 163 | CK3 | CK3 | CK3 | Clock signal 3 | 164 | n/c | n/c | n/c | Not connected | 165 | SA0 | SA0 | SA0 | Serial address 0 | 166 | SA1 | SA1 | SA1 | Serial address 1 | 167 | SA2 | SA2 | SA2 | Serial address 2 | 168 | VDD | VDD | VDD | +5 VDC or +3.3 VDC |
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