LRI64_08 datasheet(27/52 Pages) STMICROELECTRONICS

Part #	LRI64

Description	Memory tag IC at 13.56 MHz, with 64-bit unique ID and WORM user area, ISO 15693 and ISO 18000-3 Mode 1 compliant

PDF	52 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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27 / 52 page

LRI64

Request processing by the LRI64

27/52

Request processing by the LRI64

Upon reception of a valid request, the LRI64 performs the following algorithm, where:

●

NbS is the total number of slots (1 or 16)

●

SN is the current slot number (0 to 15)

●

The LSB(value,n) function returns the n least significant bits of value

●

The MSB(value,n) function returns the n most significant bits of value

●

“&” is the concatenation operator

●

Slot_Frame is either a SOF or an EOF

SN = 0

if (Nb_slots_flag)

then NbS = 1

SN_length = 0

endif

else NbS = 16

SN_length = 4

endif

label1:

if LSB(UID, SN_length + Mask_length) =

LSB(SN,SN_length)&LSB(Mask,Mask_length)

then answer to inventory request

endif

wait (Slot_Frame)

if Slot_Frame = SOF

then Stop Anticollision

decode/process request

exit

endif

if Slot_Frame = EOF

if SN < NbS-1

then SN = SN + 1

goto label1

exit

endif

LRI64 Datasheet(PDF) 27 Page - STMicroelectronics

LRI64 Datasheet(HTML) 27 Page - STMicroelectronics

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