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世平推出 NFC 和 TransferJet 近场通信技术方案 2014-05-20 随着移动支付浪潮的兴起，NFC 近场通信技术受到央行和运营商的力挺，例如：为普及NFC终端，中国移动提出每卖一台NFC手机，会多给 30 元*币的补贴。另一方面，拥有 375Mbps传输数据率的 TransferJet 近场通信技术也在逐渐成为大数据高速传输技术的新宠。为应对这两大市场趋势，世平集团特推出 NFC 和 TransferJet 近场通信技术方案。
一、 NFC 近场通信技术方案 二、 TransferJet 近场通信技术方案
一、NFC近场通信技术方案 NFC（Near Field Communication）是一种采用 13.56MHz 频带的近距离无线通信技术。结合了感应式读卡器、感应式卡片和点对点功能。虽然通信距离仅为 10cm 左右，不过和非接触式 IC 卡技术一样，“只需碰一下”，便可在不同的电子产品间交换数据。 与非接触式 IC 卡不同之处在于 NFC 可进行双向通信。只要是支持 NFC 的产品和 IC 卡，就可以读出或写入数据。还可在手机等便携产品间进行通信。数据传输速度不高，有 106Kbit/秒、212Kbit/秒、424Kbit/秒以及 848Kbit/秒四种速度可供选择。
NFC 三种工作模式
1. NFC 方案框图
2. NFC 方案特点 2.1.1 NXP PN544/PN65O（pin to pin，PN65O Embedded Secure Element） 2.1.2 NXP PN547/PN65T（pin to pin，PN65T Embedded Secure Element） 2.1.3 NXP NPC100
- Card Emulation
- ISO/IEC 14443 (A&B), MIFARE and Type B’ card emulation support via SWP up to 424Kbit/s
- ISO/IEC 14443A，MIFARE over NFC-WI
- Reader/Writer mode
- ISO/IEC 14443 Type A & B R/W up to 848 Kbit/s
- ISO/IEC 15693
- FeliCa R/W support up to 424Kbit/s
- Support of all mandatory NFC Forum tags types
- R/W support for MIFARE 1K，4K
- Peer to Peer mode
- NFCIP-1 compliance(PN544)
- NFCIP-1 & NFCIP-2 compliance(PN547)
- Features
- 80C51(PN544)，Cortex M0 core (NPC100/PN547)
- Automated Rx gain control / Diff Rx path
- Integrated power management unit
- Hard power down mode
- Direct connection to mobile battery 2.3 to 5.5V
- Powered-by-the-field in card emulation
- Secure element supply (SIM，SmartMX)
- Integrated FracNpll to save Xtal quartz
- Integrated self test to test antenna matching circuit during production
- Interfaces
- Host baseband：SPI，I2C，Serial UART
- Secure element：SWP，NFC-WI
2.2 TI TRF7970A
- Supports Near Field Communication (NFC) Standards NFCIP-1 (ISO/IEC 18092) and NFCIP-2 (ISO/IEC 21481)
- Completely Integrated Protocol Handling for ISO15693，ISO18000-3，ISO14443A/B and FeliCa
- Integrated Encoders，Decoders and Data Framing for NFC Initiator，Active and Passive Target Operation for All Three Bit Rates (106 Kbps，212 Kbps，424 Kbps) and Card Emulation
- RF Field Detector with Programmable Wake-Up Levels for NFC Passive Transponder Emulation Operation
- RF Field Detector for NFC Physical Collision Avoidance
- Integrated State Machine for ISO14443A Anti-collision (Broken Bytes) Operation (Transponder Emulation or NFC Passive Target)
- Input Voltage Range: 2.7 VDC to 5.5 VDC
- Programmable Output Power: +20 dBm (100 mW), +23 dBm (200 mW)
- Programmable I/O Voltage Levels From 1.8 VDC to 5.5 VDC
- Programmable System Clock Frequency Output (RF，RF/2，RF/4) from 13.56 MHz or 27.12 MHz Crystal or Oscillator
- Integrated Voltage Regulator Output for Other System Components (MCU，Peripherals，Indicators)，20 mA (Max)
- Programmable Modulation Depth
- Dual Receiver Architecture with RSSI for Elimination of "Read Holes" and Adjacent Reader System or Ambient In-Band Noise Detection
- Programmable Power Modes for Ultra Low-Power System Design (Power Down <1 µA)
- Parallel or SPI Interface (With 127 Byte FIFO)
- Temperature Range: –40°C to 110°C
- 32 Pin QFN Package (5 mm x 5 mm)
3. NFC 方案照片
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