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[原创] Cypress CYW43907无线片上系统(SoC)物联网开发应用方案

关键词:ARM Cortex-R4 MCU 无线片上系统(SoC) 物联网(IoT)

时间:2017-09-15 10:31:42       作者:Cypress       来源:中电网

cypress公司的CYW43907是嵌入无线片上系统(SoC),特别适合物联网(IoT)开发应用,它支持IEEE 802.11 a/b/g/n指标中所有的速率.器件包括基于ARM Cortex的应用处理器,单数据流IEEE 802.11n MAC/基带/无线电,双波段5GHz和2.4GHz发送功率放大器(PA)和接收低噪音放大器(LNA).主要用在嵌入物联网(IoT)应用如工业和医疗传感器,家用电器和嵌入音频市场.本文介绍了CYW43907主要特性,功能框图,以及评估板CYW943907AEVAL1F主要特性,主要元件分布图,框图,电路图,材料清单和PCB装配图.

The Cypress CYW43907 embedded wireless system-on-a-chip (SoC) is uniquely suited for Internet-of-Things applications. It supportsall rates specified in the IEEE 802.11 a/b/g/n specifications.The device includes an ARM Cortex-based applications processor, a singlestream IEEE 802.11n MAC/baseband/radio, a dual-band 5 GHz and 2.4 GHz transmit power amplifier (PA), and a receive low-noiseamplifier (LNA). It also supports optional antenna diversity for improved RF performance in difficult environments.

The CYW43907 is an optimized SoC targeting embedded Internet-of-Things applications in the industrial and medical sensor, homeappliance, and embedded audio markets. Using advanced design techniques and process technology to reduce active and idle power,the device is designed for embedded applications that require minimal power consumption and a compact size.

The device includes a PMU for simplifying system power topology and allows for direct operation from a battery while maximizingbattery life.

CYW43907主要特性:

Application Processor Features
■ ARM Cortex-R4 32-bit RISC processor.
■ 2 MB of on-chip SRAM for code and data.
■ An on-chip cryptography core
■ 640 KB of ROM containing WICED SDK components suchas RTOS and TCP/IP stack.
■ 17 GPIOs supported.
■ Q-SPI serial flash interface to support up to 40 Mbps of peaktransfer.
■ Support for UART (3), SPI or BSC master (2),
BSC-only (2), and I2S (2) interfaces. (Broadcom Serial Control(BSC) is an I2C-compatible interface.)
■ Dedicated fractional PLL for audio clock (MCLK) generation.
■ USB 2.0 host and device modes.
■ SDIO 3.0 host and device modes.
Key IEEE 801.11x Features
■ IEEE 802.11n compliant.
■ Single-stream spatial multiplexing up to 150 Mbps.
■ Supports 20/40 MHz channels with optional SGI.
■ Full IEEE 802.11 a/b/g legacy compatibility with enhancedperformance.
■ TX and RX low-density parity check (LDPC) support forimproved range and power efficiency.
■ On-chip power and low-noise amplifiers.
■ An internal fractional nPLL allows support for a wide range ofreference clock frequencies.
■ Integrated ARM Cortex-R4 processor with tightly coupledmemory for complete WLAN subsystem functionality, minimizingthe need to wake up the applications processor forstandard WLAN functions (to further minimize power consumptionwhile maintaining the ability to upgrade to futurefeatures in the field).
■ Software architecture supported by standard WICED SDKallows easy migration from existing discrete MCU designsand to future devices.
■ Security support:
❐ WPA and WPA2 (Personal) support for powerful encryptionand authentication.
❐ AES and TKIP in hardware for faster data encryption andIEEE 802.11i compatibility.
❐ Reference WLAN subsystem provides Cisco CompatibleExtensions (CCX, CCX 2.0, CCX 3.0, CCX 4.0, and CCX5.0).
❐ Wi-Fi Protected Setup and Wi-Fi Easy-Setup
■ Worldwide regulatory support: Global products supportedwith worldwide design approval.
General Features
■ Supports battery voltage range from 3.0V to 4.8V with aninternal switching regulator.
■ Programmable dynamic power management.
■ 6 Kb OTP memory for storing board parameters.
■ 316-bump WLCSP(4.583 mm × 5.533mm, 0.2mm pitch)..

图1.CYW43907功能框图

评估板CYW943907AEVAL1F

Thank you for your interest in the CYW943907AEVAL1F Evaluation Kit (EVK). The CYW943907AEVAL1F EVK enables customers to evaluate and develop single-chip Wi-Fi applications using CYW43907 devices.

The CYW943907AEVAL1F EVK uses WICED Studio 5.0 (or later) to develop and debug your CYW43907 project. CYW943907AEVAL1F EVK offers footprint-compatibility with Arduino shields. In addition, the kit features an RJ-45 Ethernet connector, a Micro-SD-card slot, and onboard programmer/debugger and serial bridge chip. The CYW943907AEVAL1F EVK supports only 3.3 V as the operating voltage.

Older revisions of the same kit were named BCM943907AEVAL1F_2 and BCM943907AEVAL1F. CYW43907 and BCM43907 refer to the same device. WICED Studio 5.0 (or later) supports application development using a WICED development board (CYW943907AEVAL1F). The development system is compatible with the Windows, OS X, and Linux operating systems. This document provides instructions for utilizing peripherals, such as I2C or SPI, in WICED sample applications using the WICED Studio Integrated Development Environment (IDE).

The CYW943907AEVAL1F EVK includes the following:

One CYW943907AEVAL1F Evaluation Board with assembled Arduino headers
One USB 2.0 Type-A to Micro-B cable

图2.评估板CYW943907AEVAL1F外形图(正面)

图3.评估板CYW943907AEVAL1F外形图(背面)

图2/3中的数字对应于元件:

1. Reset Switch (SW2)
2. RJ45 Connector (J14)
3. Micro USB (Programming and Debugging) (J5)
4. 5-12V Power Input (J8)
5. WICED Header (J6)
6. Arduino Header (J13)
7. User Switch 1 (SW3)
8. User Switch 2 (SW1)
9. Arduino Header (J9)
10. PCB Antenna-Main (ANT1)
11. Connector for External Antenna 1 (J1)
12. CYW43907 Type 1GC Module (Murata) (U14)
13. PCB Antenna-Diversity (ANT0)
14. Connector for External Antenna 0 (J2)
15. On-board /External JTAG Switch (SW4)
16. External JTAG Header (J3)
17. Arduino Header (J10)
18. Arduino Header (J12)
19. External PHY chip(U12)–BCM5241
20. External ADC Chip (U3)
21. SD Connector/slot (J7)

图4.评估板CYW943907AEVAL1F框图

图5.评估板CYW943907AEVAL1F电路图(1)

图6.评估板CYW943907AEVAL1F电路图(2)

图7.评估板CYW943907AEVAL1F电路图(3)

图8.评估板CYW943907AEVAL1F电路图(4)

图9.评估板CYW943907AEVAL1F电路图(5)

图10.评估板CYW943907AEVAL1F电路图(6)

图11.评估板CYW943907AEVAL1F电路图(7)

图12.评估板CYW943907AEVAL1F电路图(8)

图13.评估板CYW943907AEVAL1F电路图(9)

图14.评估板CYW943907AEVAL1F电路图(10)

图15.评估板CYW943907AEVAL1F PCB装配图(顶层)

图16.评估板CYW943907AEVAL1F PCB装配图(底层)
评估板CYW943907AEVAL1F材料清单见:
评估板CYW943907AEVAL1F材料清单.xls
详情请见:
http://www.cypress.com/file/298236/download
http://www.cypress.com/file/370526/download
002-18703_00_V.pdf
002-14829_CYW43907_WICED_IEEE_802.11_a_b_g_n_SoC_with_an_Embedded_Applications_Processor.pdf

 

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