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AS3955 Folha de dados(PDF) 49 Page - ams AG

Nome de Peças AS3955
Descrição Electrónicos  NFC Forum Compliant Dynamic Tag
PDF  111 Pages
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Fabricante Electrônico  AMSCO [ams AG]
Página de início  http://www.ams.com
Logo AMSCO - ams AG

AS3955 Folha de dados(HTML) 49 Page - ams AG

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ams Datasheet
Page 49
[v1-01] 2015-Apr-29
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AS3955 − Detailed Description
Figure 52:
Data Transmission in Extended Mode
If MCU decides to update the buffer before the NFC device
issues a WRITE command to address FFh, a I_acc_err interrupt
will be triggered, signaling that buffer cannot be accessed (see
Interrupt Register 1).
Relevant Registers, Interrupts and Commands
Relevant Registers:
• Buffer Status Register 1 (status flags : rf_busy, rf_data_rdy,
io_data_rdy)
Relevant Interrupts:
• Rx start (I_rxs bit in Interrupt Register 1)
• Rx end, Tx end (resp. I_rxe and I_txe bits in Interrupt
Register 0)
Commands:
• Transmit Buffer
• Clear Buffer
PCD
AS3955
MCU
Transmit
WRITE @ FFh
READ @ FC
h
DATA
WRITE
IN
Tx end



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