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TM4EP64DPN Datasheet(PDF) 39 Page - Texas Instruments |
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TM4EP64DPN Datasheet(HTML) 39 Page - Texas Instruments |
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39 / 43 page  TM2EP64DPN, TM2EP64DJN, TM4EP64DPN, TM4EP64DJN TM2EP72DPN, TM2EP72DJN, TM4EP72DPN, TM4EP72DJN EXTENDEDDATAOUT DYNAMIC RAM MODULES SMMS684A − AUGUST 1997 − REVISED FEBRUARY 1998 40 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 serial presence detect (continued) Table 4. Serial Presence Detect Data for the TM4EP64DxN BYTE FUNCTION DESCRIBED ’4EP64DxN-50 ’4EP64DxN-60 ’4EP64DxN-70 BYTE NO. FUNCTION DESCRIBED ITEM DATA ITEM DATA ITEM DATA 0 Defines number of bytes written into serial memory during module manufacturing 128 bytes 80h 128 bytes 80h 128 bytes 80h 1 Total number of bytes of SPD memory device 256 bytes 08h 256 bytes 08h 256 bytes 08h 2 Fundamental memory type (FPM, EDO, SDRAM) EDO 02h EDO 02h EDO 02h 3 Number of row addresses on this assembly 11 0Bh 11 0Bh 11 0Bh 4 Number of column addresses on this assembly 10 0Ah 10 0Ah 10 0Ah 5 Number of module banks on this assembly 2 banks 02h 2 banks 02h 2 banks 02h 6 Data width of this assembly 64 bits 40h 64 bits 40h 64 bits 40h 7 Data width continuation 00h 00h 00h 8 Voltage interface standard of this assembly LVTTL 01h LVTTL 01h LVTTL 01h 9 RASx access time of module tRAC = 50 ns 32h tRAC = 60 ns 3Ch tRAC = 70 ns 46h 10 CASx access time of module tCAC = 13 ns 0Dh tCAC = 15 ns 0Fh tCAC = 18 ns 12h 11 DIMM configuration type (non-parity, parity, ECC) Non-Parity 00h Non-Parity 00h Non-Parity 00h 12 Refresh rate / type 15.6 µs 00h 15.6 µs 00h 15.6 µs 00h 13 DRAM width, primary DRAM x8 08h x8 08h x8 08h 14 Error-checking SDRAM data width N/A 00h N/A 00h N/A 00h 62 SPD revision Rev. 1 01h Rev. 1 01h Rev. 1 01h 63 Checksum for bytes 0 − 62 42 2Ah 54 36h 67 43h 64−71 Manufacturer’s JEDEC ID code per JEP-106E 97h 9700...00h 97h 9700...00h 97h 9700...00h 72 Manufacturing location† TBD TBD TBD 73−90 Manufacturer’s part number† TBD TBD TBD 91 Die revision code† TBD TBD TBD 92 PCB revision code† TBD TBD TBD 93−94 Manufacturing date† TBD TBD TBD 95−98 Assembly serial number† TBD TBD TBD 99−125 Manufacturer specific data† TBD TBD TBD 126−127 Vendor specific data† TBD TBD TBD 128−166 System integrator’s specific data‡ TBD TBD TBD 167−255 Open † TBD indicates values are determined at manufacturing time and are module dependent. ‡ These TBD values are determined and programmed by the customer (optional). |
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