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SST26VF040A-80I/MFVAO Scheda tecnica(PDF) 59 Page - Microchip Technology |
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SST26VF040A-80I/MFVAO Scheda tecnica(HTML) 59 Page - Microchip Technology |
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59 / 73 page  2020-2021 Microchip Technology Inc. DS20006292B-page 59 SST26VF040A 11.0 APPENDIX TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (SHEET 1 OF 13) Address Bit Address Data Comments SFDP Header SFDP Header: 1st DWORD 00H A7:A0 53H SFDP Signature SFDP Signature = 50444653H 01H A15:A8 46H 02H A23:A16 44H 03H A31:A24 50H SFDP Header: 2nd DWORD 04H A7:A0 06H SFDP Minor Revision Number 05H A15:A8 01H SFDP Major Revision Number 06H A23:A16 02H Number of Parameter Headers (NPH) = 3 07H A31:A24 FFH Unused. Contains FF and cannot be changed. Parameter Headers JEDEC Flash Parameter Header: 1st DWORD 08H A7:A0 00H Parameter ID LSB Number When this field is set to 00H, it indicates a JEDEC-specified header. For vendor-specified headers, this field must be set to the vendor’s manufacturer ID. 09H A15:A8 06H Parameter Table Minor Revision Number Minor revisions are either clarifications or changes that add parameters in existing Reserved locations. Minor revisions do NOT change overall struc- ture of SFDP. Minor revision starts at 00H. 0AH A23:A16 01H Parameter Table Major Revision Number Major revisions are changes that reorganize or add parameters to locations that are NOT currently Reserved. Major revisions would require code (BIOS/firmware) or hardware change to get previously defined discoverable parameters. Major revision starts at 01H. 0BH A31:A24 10H Parameter Table Length Number of DWORDs that are in the Parameter table. JEDEC Flash Parameter Header: 2nd DWORD 0CH A7:A0 30H Parameter Table Pointer (PTP) A 24-bit address that specifies the start of this header’s Parameter table in the SFDP structure. The address must be DWORD-aligned. 0DH A15:A8 00H 0EH A23:A16 00H 0FH A31:A24 FFH Parameter ID MSB Number JEDEC Sector Map Parameter Header: 3rd DWORD 10H A7:A0 81H Parameter ID LSB Number Sector Map Function specific table is assigned 81H. 11H A15:A8 00H Parameter Table Minor Revision Number Minor revisions are either clarifications or changes that add parameters in existing Reserved locations. Minor revisions do NOT change overall struc- ture of SFDP. Minor revision starts at 00H. 12H A23:A16 01H Parameter Table Major Revision Number Major revisions are changes that reorganize or add parameters to locations that are NOT currently Reserved. Major revisions would require code (BIOS/firmware) or hardware change to get previously defined discoverable parameters. Major revision starts at 01H. 13H A31:A24 02H Parameter Table Length Number of DWORDs that are in the Parameter table. |
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