SL2S2602FUDZ Datasheet SL2S2602FUDZ | P25-P27

NXP Semiconductors

SL2S2602

ICODE SLIX2

Product data sheet Rev. 4.1 — 25 July 2017

COMPANY PUBLIC 276341 25 / 55

Table 37. DESTROY response format when Error_flag set

SOF Flags Error code CRC16 EOF

- 8 bits 8 bits 16 bits -

Table 38. DESTROY response format when Error_flag NOT set

SOF Flags CRC16 EOF

- 8 bits 16 bits -

9.5.3.9 ENABLE PRIVACY

Command code = BAh

The ENABLE PRIVACY command enables the ICODE SLIX2 Label IC to be set to

Privacy mode if the Privacy password is correct. The ICODE SLIX2 will not respond to

any command except GET RANDOM NUMBER and SET PASSWORD.

The XOR password has to be calculated with the password and two times the received

random number from the last GET RANDOM NUMBER command:

XOR_Password[31:0] = Password[31:0] XOR {Random_Number[15:0],

Random_Number[15:0]}.

To get out of the Privacy status, the valid Privacy password has to be transmitted to the

IC with the SET PASSWORD command.

The timing of the command is write alike.

Table 39. ENABLE PRIVACY request format

SOF Flags ENABLE

PRIVACY

IC Mfg

code

UID XOR

password

CRC16 EOF

- 8 bits 8 bits 8 bits 64 bits

optional

32 bits 16 bits -

Table 40. ENABLE PRIVACY response format when Error_flag set

SOF Flags Error code CRC16 EOF

- 8 bits 8 bits 16 bits -

Table 41. ENABLE PRIVACY response format when Error_flag NOT set

SOF Flags CRC16 EOF

- 8 bits 16 bits -

9.5.3.10 INVENTORY READ

Command code = A0h

When receiving the INVENTORY READ request, the ICODE SLIX2 IC performs the

same as the anticollision sequence, with the difference that instead of the UID and the

DSFID, the requested response is defined by additional options.

NXP Semiconductors

SL2S2602

ICODE SLIX2

Product data sheet Rev. 4.1 — 25 July 2017

COMPANY PUBLIC 276341 26 / 55

The INVENTORY READ command provides two modes which are defined by the most

significant bit of the mask length byte as follows:

• Standard mode (MSB mask length byte equal 0)

The standard mode of the INVENTORY READ command is fully backward compatible

to the ICODE SLI and ICODE SLIX (refer to Section "8.4.3.10.1. Standard mode")

• Extended mode (MSB mask length byte equal 1)

The extended mode offers additional features to optimize the inventory procedure for

different requirements (refer to Section "8.4.3.10.2 Extended Mode")

8.4.3.10.1 Standard mode

If MSB mask length byte equal 0 the INVENTORY READ command is used in the

standard mode.

If the Inventory_flag is set to 1 and an error is detected, the ICODE SLIX2 IC remains

silent.

If the Option flag is set to logic 0, n blocks of data are re-transmitted. If the Option flag

is set to 1, n blocks of data and the part of the UID which is not part of the mask are re-

transmitted.

The request contains:

• Flags

• INVENTORY READ command code

• IC manufacturer code

• AFI (if AFI flag set)

• Mask length (most significant bit equal 0)

• Mask value (if mask length > 0)

• First block number to be read

• Number of blocks to be read

• CRC 16

Table 42. INVENTORY READ request format

SOF Flags INVENTORY

READ

IC Mfg

code

AFI Mask

length

Mask

value

First

block

number

Number

of blocks

CRC16 EOF

- 8 bits 8 bits 8 bits 8 bits

optional

8 bits 0 to 64

bits

8 bits 8 bits 16 bits -

If the Inventory_flag is set to logic 1, only tags in the READY or SELECTED state will

respond (same behavior as in the INVENTORY command). The meaning of flags 5 to 8

is in accordance with table 5 in ISO/IEC 15693-3.

The INVENTORY READ command can also be transmitted in the addressed or selected

mode (refer to "Section 8.4.3.10.3 Addressed and selected mode).

The number of blocks in the request is one less than the number of blocks that the

ICODE SLIX2 IC returns in its response.

If the Option flag in the request is set to logic 0 the response contains:

NXP Semiconductors

SL2S2602

ICODE SLIX2

Product data sheet Rev. 4.1 — 25 July 2017

COMPANY PUBLIC 276341 27 / 55

Table 43. INVENTORY READ response format: Option flag logic 0

SOF Flags Data CRC16 EOF

- 8 bits Block length 16 bits -

Repeated as needed

The ICODE SLIX2 IC reads the requested block(s) and sends back their value in the

response. The mechanism and timing of the INVENTORY READ command performs the

same as the INVENTORY command which is described in clause 8 of ISO/IEC 15693-3.

If the Option flag in the request is set to logic 1, the response contains:

Table 44. INVENTORY READ response format: Option flag logic 1

SOF Flags Rest of UID which is not

part of the mask and slot

number

Data CRC16 EOF

- 8 bits 0 to 64 bit Block length 16 bits -

Multiple of 8 bits Repeated as needed

The ICODE SLIX2 IC reads the requested block(s) and sends back their value in the

response. Additionally the bytes of the UID, which are not parts of the mask and the

slot number in case of 16 slots, are returned. Instead of padding with zeros up to the

next byte boundary, the corresponding bits of the UID are returned. The mechanism

and timing of the INVENTORY READ command perform the same as the INVENTORY

command which is described in clause 8 of ISO/IEC 15693-3.

Remark: The number of bits of the re-transmitted UID can be calculated as follows:

• 16 slots: 60 bits (bit 64 to bit 4) - mask length rounded up to the next byte boundary

• 1 slot: 64 bits - mask length rounded up to the next byte boundary

Remark: If the sum of first block number and number of blocks exceeds the total

available number of user blocks, the number of transmitted blocks is less than the

requested number of blocks, which means that the last returned block is the highest

available user block, followed by the 16-bit CRC and the EOF.

Example: mask length = 30 bits

Returned: bit 64 to bit 4 (30 bits) = 30 gives 4 bytes

Table 45. Example: mask length = 30

Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 UID

- transmitted by

interrogator

mask value including

padding with zeros

returned value transmitted by

ICODE SLIX2 IC

8.4.3.10.2 Extended Mode

If the most significant bit of the Mask Length byte is equal 1 the response format is

defined by the extended option byte.

The request contains:

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P30 P31-P33 P34-P36 P37-P39 P40-P42 P43-P45 P46-P48 P49-P51 P52-P54 P55-P55

SL2S2602FUDZ

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NXP Semiconductors

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RFID Transponders ICODE SLIX2

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