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SST26VF032BEUI 数据表(PDF) 53 Page - Microchip Technology |
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SST26VF032BEUI 数据表(HTML) 53 Page - Microchip Technology |
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53 / 76 page  2019 Microchip Technology Inc. DS20006152A-page 53 SST26VF032BEUI 11.0 APPENDIX TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (1 OF 16) 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 can not be changed. Parameter Headers JEDEC Flash Parameter Header: 1st DWORD 08H A7:A0 00H Parameter ID Least Significant Bit (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 manufac- turer 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 structure 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 loca- tions that are NOT currently Reserved. Major revisions would require code (BIOS/firmware) or hardware change to get previously defined dis- coverable 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 Most Significant Bit (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 structure 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 loca- tions that are NOT currently Reserved. Major revisions would require code (BIOS/firmware) or hardware change to get previously defined dis- coverable parameters. Major Revision starts at 01H |
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