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DTM65538C

1 GB, 240-Pin DDR2 FB-DIMM

Features Description

240-pin JEDEC-compliant DIMM, 133.35 mm wide by

30.35 mm high

Data Transfer Rate: 6.4 Gigabytes/sec

Operating Voltage: VDD = 1.8 V ±0.1; VCC = 1.5V ±0.1

SMBus interface to AMB for configuration register

access

MBIST and IBIST test functions

Transparent mode for DDR2 SDRAM test support

Full DIMM Heat Spreader

High-speed differential point-to-point link

Fully RoHS Compliant

The DTM65538C is a Single Rank PC2-6400 Fully Buffered

128MX72 ECC DIMM that conforms to the JEDEC FB-DIMM

standard. The rank is comprised of nine Samsung 128Mx8

DDR2 DRAMs. One IDT (Rev C1) Advanced Memory Buffer

(AMB) is used as the interface between the system memory

bus and DIMM DRAMs. One 2K-bit EEPROM is used for

Serial Presence Detect. For improved thermal performance,

a Full DIMM Heat Spreader with thermal interface material

(TIM) is attached to the front and back of the DIMM.

Pin Configurations Pin Names

Front side Back side Pin Names Function

1 VDD 31 PN3 61 /PN9 91 /PS9 121 VDD 151 SN3 181 /SN9 211 /SS9 SCK, /SCK System Clock Input

2 VDD 32 /PN3 62 VSS 92 VSS 122 VDD 152 /SN3 182 VSS 212 VSS PN, /PN[13:0] Primary Northbound Data

3 VDD 33 VSS 63 PN10 93 PS5 123 VDD 153 VSS 183 SN10 213 SS5 PS, /PS[9:0] Primary Southbound Data

4 VSS 34 PN4 64 /PN10 94 /PS5 124 VSS 154 SN4 184 /SN10 214 /SS5 SN. /SN[13:0] Secondary Northbound Data

5 VDD 35 /PN4 65 VSS 95 VSS 125 VDD 155 /SN4 185 VSS 215 VSS SS. /SS[9:0] Secondary Southbound Data

6 VDD 36 VSS 66 PN11 96 PS6 126 VDD 156 VSS 186 /SN11 216 SS6 SCL Serial Clock, EEPROM

7 VDD 37 PN5 67 /PN11 97 /PS6 127 VDD 157 SN5 187 /SN11 217 /SS6 SDA Serial Data, EEPROM

8 VSS 38 /PN5 68 VSS 98 VSS 128 VSS 158 /SN5 188 VSS 218 VSS /RESET AMB Reset Signal

9 VCC 39 VSS 69 VSS 99 PS7 129 VCC 159 VSS 189 VSS 219 SS7 AMB Core Power and AMB Channel

10 VCC 40 PN13 70 PS0 100 /PS7 130 VCC 160 SN13 190 SS0 220 /SS7

VCC

Interface Power (1.5 V)

11 VSS 41 /PN13 71 /PS0 101 VSS 131 VSS 161 /SN13 191 /SS0 221 VSS DRAM Power and AMB DRAM I/O

12 VCC 42 VSS 72 VSS 102 PS8 132 VCC 162 VSS 192 VSS 222 SS8

VDD

Power (1.8 V)

13 VCC 43 VSS 73 PS1 103 /PS8 133 VCC 163 VSS 193 SS1 223 /SS8 DRAM Address/Command/Clock

14 VSS 44 RFU 74 /PS1 104 VSS 134 VSS 164 RFU1 194 /SS1 224 VSS

VTT

Termination Power (VDD/2)

15 VTT 45 RFU 75 VSS 105 RFU2 135 VTT 165 RFU1 195 VSS 225 RFU2 VDDSPD SPD Power

16 VID1 46 VSS 76 PS2 106 RFU2 136 VID0 166 VSS 196 SS2 226 RFU2 VSS Ground

17 /RESET 47 VSS 77 /PS2 107 VSS 137 M_TEST 167 VSS 197 /SS2 227 VSS RFU Reserved For Future Use

18 VSS 48 PN12 78 VSS 108 VDD 138 VSS 168 SN12 198 VSS 228 SCK DNU Do Not Use

19 RFU2 49 /PN12 79 PS3 109 VDD 139 RFU2 169 /SN12 199 SS3 229 /SCK M_TEST Margin Test

20 RFU2 50 VSS 80 /PS3 110 VSS 140 RFU2 170 VSS 200 /SS3 230 VSS

SA[2:0] Serial Address, EEPROM

21 VSS 51 PN6 81 VSS 111 VDD 141 VSS 171 SN6 201 VSS 231 VDD

22 PN0 52 /PN6 82 PS4 112 VDD 142 SN0 172 /SN6 202 SS4 232 VDD

23 /PN0 53 VSS 83 /PS4 113 VDD 143 /SN0 173 VSS 203 /SS4 233 VDD

24 VSS 54 PN7 84 VSS 114 VSS 144 VSS 174 SN7 204 VSS 234 VSS

25 PN1 55 /PN7 85 VSS 115 VDD 145 SN1 175 /SN7 205 VSS 235 VDD

26 /PN1 56 VSS 86 RFU1 116 VDD 146 /SN1 176 VSS 206 RFU1 236 VDD

27 VSS 57 PN8 87 RFU1 117 VTT 147 VSS 177 SN8 207 RFU1 237 VTT

28 PN2 58 /PN8 88 VSS 118 SA2 148 SN2 178 /SN8 208 VSS

238 VDDSPD

29 /PN2 59 VSS 89 VSS 119 SDA 149 /SN2 179 VSS 209 VSS 239 SA0

30 VSS 60 PN9 90 PS9 120 SCL 150 VSS 180 SN9 210 SS9 240 SA1

NOTE: M_TEST is not used

Identification

DTM65538C 256Mx72

1GB 1Rx8 PC2-6400F-555-11-B0

Performance range

Clock / Module Speed / CL-t

RCD

-t

400MHz / DDR2-800 / 5-5-5

333MHz / DDR2-667 / 4-4-4

200MHz / DDR2-400 / 3-3-3

1 2 3 4 5 6 ... 17 18

DTM65538C 1

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