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SST26VF032BEUI データシート(PDF) 68 Page - Microchip Technology |
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SST26VF032BEUI データシート(HTML) 68 Page - Microchip Technology |
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68 / 76 page  SST26VF032BEUI DS20006152A-page 68 2019 Microchip Technology Inc. 11.1 Mapping Guidance Details The SFDP Memory Organization/Block Protection Bit Mapping defines the memory organization including uniform sector/block sizes and different contiguous sectors/blocks sizes. In addition, this bit defines the number of these uniform and different sectors/blocks from address 000000H to the full range of Memory and the associated Block Locking Register bits of each sec- tor/block. Each major Section is defined as follows: 25EH A23:A16 07H Section 5 Block Protection Bit Start ((2m) +1)+ c, c=07H or 7, m= 6 for 32 Mb Address bits are Read Lock bit locations and Even Address bits are Write Lock bit locations. The most significant (left-most) bit indicates the sign of the integer; it is sometimes called the sign bit. If the sign bit is zero, then the number is greater than or equal to zero, or positive. If the sign bit is one then the number is less than zero or negative. 25FH A31:A24 0EH Section 5 (Top) Block Protection Bit End (((2m) +1)+ c, c=0EH or 14, m= 6 for 32 Mb, Address bits are Read Lock bit locations and Even Address bits are Write Lock bit locations. The most significant (left-most) bit indicates the sign of the integer; it is sometimes called the sign bit. If the sign bit is zero, then the number is greater than or equal to zero, or positive. If the sign bit is one then the number is less than zero or negative. EUI-48 and EUI-64 Information 260H A7:A0 30H Indicates if EUI48 Mac address is being programmed in the next 6 address locations. 30H=48 bits is programmed FFH=Not being programmed 261H A15:A8 Octet 5 Mac address LSB-Octet 5 262H A23:A16 Octet 4 Octet 4 263H A31:A24 Octet 3 Octet 3 264H A7:A0 Octet 2 Octet 2 265H A15:A8 Octet 1 Octet 1 266H A23:A16 Octet 0 Mac address MSB-Octet 0 267H A31:A24 40H Indicates if EUI64 Mac address is being programmed in the next 8 address locations. 40H=64 bits is programmed FFH=Not being programmed 268H A7:A0 Octet 7 Mac address LSB-Octet 7 269H A15:A8 Octet 6 Octet 6 26AH A23:A16 Octet 5 Octet 5 26BH A31:A24 Octet 4 Octet 4 26CH A7:A0 Octet 3 Octet 3 26DH A15:A8 Octet 2 Octet 2 26EH A23:A16 Octet 1 Octet 1 26FH A31:A24 Octet 0 Mac address MSB-Octet 0 1. See “Mapping Guidance Details” for more detailed mapping information TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (16 OF 16) Address Bit Address Data Comments |
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