LRIS64K datasheet(75/100 Pages) STMICROELECTRONICS

75 / 100 page

LRIS64K

Commands codes

Doc ID 15336 Rev 11

75/100

24.13

Get Multiple Block Security Status

When receiving the Get Multiple Block Security Status command, the LRIS64K sends back

the sector security status. The blocks are numbered from '00h to '07FFh' in the request and

the value is minus one (–1) in the field. For example, a value of '06' in the “Number of blocks”

field requests to return the security status of 7 blocks.

The Protocol_extention_flag should be set to 1 for the LRIS64K to operate correctly. If the

Protocol_extention_flag is at 0, the LRIS64K answers with an error code.

During the LRIS64K response, if the internal block address counter reaches 07FFh, it rolls

over to 0000h and the Sector Security Status bytes for that location are sent back to the

reader.

Request parameter:

●

UID (optional)

●

First block number

●

Number of blocks

Response parameters:

●

Sector security status (see Table 65: Sector security status)

Table 63.

Get Multiple Block Security Status request format

Request

SOF

Request

_flags

Get

Multiple

Block

Security

Status

UID(1)

Gray means that the field is optional.

First

block

number

Number

of blocks

CRC16

Request

EOF

8 bits

2Ch

64 bits

16 bits

Table 64.

Get Multiple Block Security Status response format when Error_flag is

NOT set

Response

SOF

Response_

flags

Sector security

status

CRC16

Response

EOF

8 bits

8 bits(1)

Repeated as needed.

16 bits

Table 65.

Sector security status

Reserved for future use. All

at 0

password control

bits

Read / Write

protection bits

0: Current sector not locked

1: Current sector locked

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