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LRI64 Folha de dados(PDF) 47 Page - STMicroelectronics

Nome de Peças LRI64
Descrição Electrónicos  Memory TAG IC at 13.56 MHz, with 64-bit Unique ID and WORM user area, ISO15693 and ISO18000-3 Mode 1 compliant
PDF  52 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LRI64 Folha de dados(HTML) 47 Page - STMicroelectronics

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LRI64
algorithm for pulsed slots
47/52
Appendix A
algorithm for pulsed slots
The following pseudo-code describes how the anti-collision could be implemented on the
VCD, using recursive functions.
function push (mask, address); pushes on private stack
function pop (mask, address); pops from private stack
function pulse_next_pause; generates a power pulse
function store(LRI64_UID); stores LRI64_UID
function poll_loop (sub_address_size as integer)
pop (mask, address)
mask = address & mask; generates new mask
; send the Request
mode = anti-collision
send_Request (Request_cmd, mode, mask length, mask value)
for sub_address = 0 to (2^sub_address_size - 1)
pulse_next_pause
if no_collision_is_detected ; LRI64 is inventoried
then
store (LRI64_UID)
else ; remember a collision was detected
push(mask,address)
endif
next sub_address
if stack_not_empty ; if some collisions have been detected and
then
; not yet processed, the function calls itself
poll_loop (sub_address_size); recursively to process the
last stored collision
endif
end poll_loop
main_cycle:
mask = null
address = null
push (mask, address)
poll_loop(sub_address_size)
end_main_cycle



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