參數(shù)資料
型號(hào): PN531
廠商: NXP Semiconductors N.V.
英文描述: Zener Diode; Application: General; Pd (mW): 400; Vz (V): 7.5 to 7.9; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: MHD
中文描述: レ基于C傳輸模塊
文件頁(yè)數(shù): 12/19頁(yè)
文件大?。?/td> 246K
代理商: PN531
Philips Semiconductors Objective Short Form Specification Rev. 2.0 February 2004
PN531
μC based Transmission module
4.2.1 ACTIVE NFC MODE
Active NFC Mode means both the initiator and the target use their own RF field to enable the
communication.
Communication Diagrams for active NFC communication
NFC Initiator
NFC Target
1. Initiator starts communication at
selected transfer speed
2. Target answers at the
same transfer speed
powered for digital
processing
powered for digital
processing
Host
Host
Host
Initial Command
NFC Target
powered to
generate RF field
NFC Initiator
Response
powered to
generate RF field
Host
Figure 5 active NFC Mode
The PN531’s firmware and contactless UART handle the NFC protocol.
12
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