TI CC1111 USB Dongle参考设计

TI公司的CC1110Fx / CC1111Fx是低功耗1GHz以下的RF片上系统(SoC),它集成了MCU,存储器,收发器以及USB控制器. CC1110Fx / CC1111Fx把极好性能的RF收发器CC1101和工业标准的增强型8051 MCU,多达32KB的在系统可编程的闪存和多达4KB RAM以及其它许多功能强大的特性集成在一起.它的封装为6x6mm,非常适合用在尺寸受限制的低功耗无线应用.本文介绍了CC1110Fx / CC1111Fx的主要性能,方框图以及多个频率的应用电路图以及USB Dongle参考设计的详细电路图.

CC1110Fx / CC1111Fx Low-power sub-1 GHz RF System-on-Chip (SoC) with MCU, memory, transceiver, and USB controller
The CC1110Fx/CC1111Fx is a true low-power sub-1 GHz system-on-chip (SoC) designed for lowpower wireless applications. The CC1110Fx/CC1111Fx combines the excellent performance of the state-of-the-art RF transceiver CC1101 with an industry-standard enhanced 8051 MCU, up to 32 kB of in-system programmable flash memory and up to 4 kB of RAM, and many other powerful features. The small 6×6 mm package makes it very suited for applications with size limitations.
The CC1110Fx/CC1111Fx is highly suited for systems where very low power consumption is required. This is ensured by several advanced low-power operating modes. The CC1111Fx adds a full-speed USB 2.0 interface to the feature set of the CC1110Fx. Interfacing to a PC using the USB interface is quick and easy, and the high data rate (12 Mbps) of the USB interface avoids the bottlenecks of RS-232 or low-speed USB interfaces.



图1.CC1111外形图.
主要特性:
Radio
High-performance RF transceiver based on the market-leading CC1101
Excellent receiver selectivity and blocking performance
High sensitivity (–110 dBm at 1.2 kBaud)
Programmable data rate up to 500 kBaud
Programmable output power up to +10 dBm for all supported frequencies
Frequency range: 300-348 MHz, 391-464 MHz and 782-928 MHz
Digital RSSI / LQI support
Low Power
Low current consumption (RX: 16.2 mA @ 1.2 kBaud, TX: 16 mA @ –6 dBm output power)
0.3 µA in PM3 (operating mode with the lowest power consumption, only external interrupt wakeup)
0.5 µA in PM2 (operating mode with the second lowest power consumption, timer or external interrupt wakeup)
MCU, Memory, and Peripherals
High performance and low power 8051 microcontroller core.
Powerful DMA functionality
8/16/32 KB in-system programmable flash, and 1/2/4 KB RAM
Full-Speed USB Controller with 1 KB FIFO (CC1111Fx)
128-bit AES security coprocessor
7-12 bit ADC with up to eight inputs
I2S interface
Two USARTs
16-bit timer with DSM mode
Three 8-bit timers
Hardware debug support
21 (CC1110Fx) or 19 (CC1111Fx) GPIO pins
SW compatible with CC2510Fx/CC2511Fx
General
Wide supply voltage range (2.0V – 3.6V)
RoHS compliant 6x6 mm QLP36 package



图2. CC1110Fx / CC1111Fx方框图.
主要应用:
Low-power SoC wireless applications operating in the 315/433/868/915 MHz ISM/SRD bands
Wireless alarm and security systems
Industrial monitoring and control
Wireless sensor networks
AMR – Automatic Meter Reading
Home and building automation
Low power telemetry
CC1111Fx: USB dongles

CC1111 USB dongle参考设计:
The CC1111 USB dongle reference design demonstrates how to make a compact USB dongle with the CC1111 System-on-Chip, a chip antenna in conjunction with a special PCB trace and single sided components mounting.

Schematics and layout files for the CC1111 USB dongle is included in the reference design. The reference design demonstrates good techniques for CC1111 decoupling and RF layout. For optimum RF performance, these parts should be copied accurately. This is a 4-layer reference design with a discrete balun and a compact antenna solution. The antenna solution is recommended for applications operating in the 868/915 MHz frequency range requiring a small antenna solution.



图3. CC1110Fx 315/433 MHz应用电路图 (不包括电源去耦电容)



图4. CC1110Fx 868/915 MHz应用电路图(不包括电源去耦电容)



图5. CC1110Fx 868/915 MHz带基本晶体的应用电路图(不包括电源去耦电容)
下表是CC1110Fx/CC1111Fx 应用电路元件清单(BOM):





图6. USB Dongle参考设计电路图(1)



图7. USB Dongle参考设计电路图(2)



图8. USB Dongle参考设计电路图(3)



图9. USB Dongle参考设计电路图(4)