ST25TV02K datasheet(29/90 Pages) STMICROELECTRONICS

29 / 90 page

Table 34. Request flags 5 to 8 when inventory_flag, Bit 3 = 0

Bit nb

Flag

Level

Description

Bit 5

Select flag (1)

The request is executed by any ST25TV16K/64K according to the setting of Address_flag

The request is executed only by the ST25TV16K/64K in Selected state

Bit 6

Address flag

The request is not addressed. UID field is not present. The request is executed by all

ST25TV16K/64Ks.

The request is addressed. UID field is present. The request is executed only by the

ST25TV16K/64K whose UID matches the UID specified in the request.

Bit 7

Option flag

Option not activated.

Option activated.

Bit 8

RFU

1. If the Select_flag is set to 1, the Address_flag is set to 0 and the UID field is not present in the request.

Table 35. Request flags 5 to 8 when inventory_flag, Bit 3 = 1

Bit nb

Flag

Level

Description

Bit 5

AFI flag

AFI field is not present

AFI field is present

Bit 6

Nb_slots flag

16 slots

1 slot

Bit 7

Option flag

Bit 8

RFU

6.2.6

Response format

The response consists of:

•

an SOF

•

flags

•

parameters and data

•

a CRC

•

an EOF

Table 36. General response format

SOF

Response_flags

Parameters

Data

2-byte CRC

EOF

6.2.7

Response flags

In a response, the flags indicate how actions have been performed by the ST25TV02K/512 and whether

corresponding fields are present or not. The response flags consist of eight bits.

ST25TV02K ST25TV512

RF protocol description

DS12074 - Rev 11

page 29/90

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