SST26VF032BEUI datasheet(68/76 Pages) MICROCHIP

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

263H

A31:A24

Octet 3

264H

A7:A0

Octet 2

265H

A15:A8

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

26AH

A23:A16

Octet 5

26BH

A31:A24

Octet 4

26CH

A7:A0

Octet 3

26DH

A15:A8

Octet 2

26EH

A23:A16

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

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