TI TRF7963A：集成13.56MHz RFID阅读器/写入器IC for ISO14443A/B, NFC标准

需积分: 9 12 浏览量更新于2024-07-23 1 收藏 2.23MB PDF 举报

"TRF7963A是一款集成度极高的13.56MHz RFID读写器/编码器芯片，适用于ISO14443A/B、NFC Forum Device Types 1到4以及FeliCa标准的非接触式IC卡应用。这款芯片设计精良，具备多种特色功能，广泛应用于安全访问控制、交通票务、数字门锁、电子护照阅读系统和无接触支付系统等场景。" TRF7963A近场模块芯片是德州仪器（TI）推出的一款高性能RFID解决方案，其主要特点包括： 1. 完整的协议处理：该芯片集成了对ISO14443A/B、NFC论坛设备类型1至4以及FeliCa标准的支持，能够处理各种非接触式通信协议。 2. 双接收架构：采用双接收器设计，带有RSSI（接收信号强度指示），可消除“读取盲区”并检测环境中的干扰噪声，确保通信稳定性。 3. 广泛的电源电压范围：支持2.7VDC至5.5VDC的输入电压，适应性强。 4. 超低功耗模式：具有可编程的电源模式，待机功耗极低，小于0.5μA，适合节能型设计。 5. 可调输出功率：输出功率可设置为+20dBm（100mW）或+23dBm（200mW），满足不同应用需求。 6. 并行或SPI接口：提供灵活的接口选择，便于与微控制器进行通信。 7. 可编程I/O电压水平：支持1.8VDC至5.5VDC的I/O电平，兼容多种电压标准的系统。 8. 集成电压调节器：内置电压调节器，为微控制器供电，简化系统设计。 9. 可编程系统时钟频率：输出频率可选RF、RF/2或RF/4，适应不同的工作速度。 10. 工作温度范围：在-25°C至85°C的温度范围内稳定工作，确保在各种环境条件下的可靠性能。 11. 可编程调制深度：可根据应用需求调整调制深度，优化通信性能。 12. 小型封装：采用32引脚QFN封装（5mm x 5mm），节省板级空间。综合以上特性，TRF7963A芯片为开发近场通信应用提供了高效且可靠的硬件平台，无论是用于门禁系统、公共交通票务、智能门锁，还是电子护照验证和无接触支付终端，都能展现出优秀的性能和灵活性。开发者可以借助这款芯片快速构建符合标准的非接触式读写系统，实现高效、安全的无线数据交换。

TRF7963A

www.ti.com

SLOS758D –DECEMBER 2011–REVISED JANUARY 2014

4.2 TRF7963A Reader System Using SPI With SS Mode

4.2.1 General Application Considerations

Figure 4-2 shows the TRF7963A application schematic using the Serial Port Interface (SPI). Short SPI

lines, proper isolation to radio frequency lines, and a proper ground area are essential to avoid

interference. The recommended clock frequency on the DATA_CLK line is 2 MHz.

This schematic shows matching to a 50-Ω port, which allows connection to a properly matched 50-Ω

antenna circuit or RF measurement equipment (for example, a spectrum analyzer or power meter).

4.2.2 Schematic

Figure 4-2 shows a sample application schematic with a serial interface to the MCU.

Figure 4-2. Application Schematic, SPI With SS Mode MCU Interface

The MSP430F2370 (32kB flash, 2kB RAM) is shown in Figure 4-2. Minimum MCU requirements depend

on application requirements and coding style. If only one ISO protocol and/or a limited command set of a

protocol must be supported, MCU flash and RAM requirements can be significantly reduced. For example,

current reference firmware for ISO14443A/B (with host interface) is approximately 8kB, using 1kB RAM.

An MCU that is capable of running a GPIO at 13.56 MHz is required for Direct Mode 0 operations with

nonstandard transponders.

Submit Documentation Feedback

Product Folder Links :TRF7963A

MUX

RX_IN1

RX_IN2

Phase and

Amplitude

Detector

Gain

RSSI

(AUX)

Logic

State

Control

Logic

(Control

Registers,

Command

Logic)

12-Byte

FIFO

MCU

Interface

VDD _I/O

I/O_0

I/O_1

I/O_2

I/O_3

I/O_4

I/O_5

I/O_6

I/O_7

IRQ

SYS _CLK

DATA _CLK

ISO

Protocol

Handling

Decoder

RSSI

(External)

Gain

RSSI

(Main)

Filter,

AGC

Digitizer

Bit

Framing

Serial

Conversion

CRC, Parity

Transmitter Analog

Front End

TX_ OUT

VDD_PA

VSS_PA

Digital Control

State Machine

Crystal Oscillator

Timing System

EN2

ASK/ OOK

MOD

OSC_IN

OSC_ OUT

Voltage Supply Regulator Systems

(Supply Regulators, Reference Voltages)

VSS _A

VSS _RF

VDD _RF

VDD_X

VSS _D

VSS

VIN

VDD _A

BAND _GAP

Phase and

Amplitude

Detector

Level

Shifter

TRF7963A

SLOS758D –DECEMBER 2011 –REVISED JANUARY 2014

www.ti.com

5 Detailed System Description

5.1 System Block Diagram

Figure 5-1. System Block Diagram

5.2 Power Supplies

The TRF7963A positive supply input VIN (pin 2) sources three internal regulators with output voltages

VDD_RF, VDD_A, and VDD_X. All regulators require external bypass capacitors for supply noise filtering

and must be connected as indicated in reference schematics. These regulators provide a high power

supply reject ratio (PSRR) as required for RFID reader systems. All regulators are supplied via VIN (pin 2).

The regulators are not independent and have common control bits in register 0x0B for output voltage

setting. The regulators can be configured to operate in either automatic or manual mode (register 0x0B, bit

7). The automatic regulator setting mode ensures an optimal compromise between PSRR and the highest

possible supply voltage for RF output (to ensure maximum RF power output). The manual mode allows

the user to manually configure the regulator settings.

5.3 Supply Arrangements

Regulator Supply Input: VIN

The positive supply at VIN (pin 2) has an input voltage range of 2.7 V to 5.5 V. VIN provides the supply

input sources for three internal regulators with the output voltages VDD_RF, VDD_A, and VDD_X.

External bypass capacitors for supply noise filtering must be used (per reference schematics).

NOTE

VIN must be the highest voltage supplied to the TRF7963A.

Submit Documentation Feedback

Product Folder Links :TRF7963A

TRF7963A

www.ti.com

SLOS758D –DECEMBER 2011–REVISED JANUARY 2014

RF Power Amplifier Regulator: VDD_RF

The VDD_RF (pin 3) regulator is supplying the RF power amplifier. The voltage regulator can be set for

either 5V or 3V operation. External bypass capacitors for supply noise filtering must be used (per

reference schematics). When configured for 5V manual-operation, the VDD_RF output voltage can be set

from 4.3 V to 5 V in 100-mV steps. In 3-V manual operation, the output can be programmed from 2.7 V to

3.4 V in 100-mV steps (see Table 5-2). The maximum output current capability for 5-V operation is 150

mA and for 3-V operation is 100 mA.

Analog Supply Regulator: VDD_A

Regulator VDD_A (pin 1) supplies the analog circuits of the device. The output voltage setting depends on

the input voltage and can be set for 5-V and 3-V operation. When configured for 5-V manual operation,

the output voltage is fixed at 3.4 V. External bypass capacitors for supply noise filtering must be used (per

reference schematics). When configured for 3-V manual operation, the VDD_A output can be set from 2.7

V to 3.4 V in 100-mV steps (see Table 5-2).

NOTE

The configuration of VDD_A and VDD_X regulators are not independent from each other.

The VDD_A output current should not exceed 20 mA.

Digital Supply Regulator: VDD_X

The Digital Supply Regulator VDD_X (pin 32) provides the power for the internal digital building blocks

and can also be used to supply external electronics within the reader system. When configured for 3-V

operation, the output voltage can be set from 2.7 to 3.4 V in 100-mV steps. External bypass capacitors for

supply noise filtering must be used (per reference schematics).

NOTE

The configuration of the VDD_A and VDD_X regulators are not independent from each other.

The VDD_X output current should not exceed 20 mA.

The RF power amplifier regulator (VDD_RF), analog supply regulator (VDD_A), and digital supply

regulator (VDD_X) can be configured to operate in either automatic or manual mode described in Table 5-

1. The automatic regulator setting mode ensures an optimal compromise between PSRR and the highest

possible supply voltage to ensure maximum RF power output.

By default, the regulators are set in automatic regulator setting mode. In this mode, the regulators are

automatically set every time the system is activated by setting EN input High or each time the automatic

regulator setting bit, B7 in register 0x0B is set to a 1. The action is started on the 0 to 1 transition. This

means that, if the user wants to re-run the automatic setting from a state in which the automatic setting bit

is already high, the automatic setting bit (B7 in register 0x0B) should be changed: 1-0-1.

By default, the regulator setting algorithm sets the regulator outputs to a "Delta Voltage" of 250 mV below

VIN, but not higher than 5 V for VDD_RF and 3.4 V for VDD_A and VDD_A. The "Delta Voltage" in

automatic regulator mode can be increased up to 400 mV (for more details, see bits B0 to B2 in register

0x0B).

Power Amplifier Supply: VDD_PA

The power amplifier of the TRF7963A is supplied through VDD_PA (pin 4). The positive supply pin for the

RF power amplifier is externally connected to the regulator output VDD_RF (pin 3).

Submit Documentation Feedback

Product Folder Links :TRF7963A

剩余63页未读，继续阅读

alan_414

粉丝: 0
资源: 1

TI TRF7963A：集成13.56MHz RFID阅读器/写入器IC for ISO14443A/B, NFC标准

TI-TRF7963A.pdf

基于TRF7970A,MSP430F2370的RFID/NFC工程

TRF7970A各种协议卡检测

TRF7970A 模擬版測試程式

TRF7961英文手册

TI TRF7960源代码

NFC模块设计：基于TRF7970A的收发一体解决方案

基于收发一体芯片的NFC模块设计与应用

Python基于yolo的健身姿势检测与姿态矫正建议系统源代码+使用说明

使用谷歌地球引擎（GEE）和 Python 在孟加拉国西北部绘制基于机器学习算法的作物类型图.ipynb

最新资源