M58PR512LE datasheet(86/119 Pages) STMICROELECTRONICS

86 / 119 page

Block address tables

M58PR256LE, M58PR512LE, M58PR001LE

86/119

Appendix A

Block address tables

The following set of equations can be used to calculate a complete set of block addresses

using the information contained in tables 36, 37, 38, 39, 40 and 41.

To calculate the block base address from the block number:

First it is necessary to calculate the bank number and the block number offset. This can be

achieved using the following formulas:

For the M58PR256LE:

Bank_Number = Block_Number / 16

Block_Number_Offset = Block_Number - (Bank_Number x 16)

For the M58PR512LE:

Bank_Number = Block_Number / 32

Block_Number_Offset = Block_Number - (Bank_Number x 32)

For the M58PR001LE:

Bank_Number = Block_Number / 64

Block_Number_Offset = Block_Number - (Bank_Number x 64)

The Block Base Address is calculated using the formula below:

Block_Base_Address = Bank_Base_Address + Block_Base_Address_Offset

To calculate the Bank number and the Block Number from the Block Base Address:

The Block Number, Bank Number and Block Number Offset can be calculated using the

formulas below:

For the M58PR256LE:

Block_Number = address / 216

Bank_Number = Block_Number / 16

Block_Number_Offset = Block_Number

− (Bank_Number x 16)

For the M58PR512LE:

Block_Number = address / 232

Bank_Number = Block_Number / 32

Block_Number_Offset = Block_Number

− (Bank_Number x 32)

For the M58PR001LE:

Block_Number = address / 264

Bank_Number = Block_Number / 64

Block_Number_Offset = Block_Number - (Bank_Number x 64)

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