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  [组图]Microchip PIC32MX蓝牙音频开发方案           ★★★ 【字体:
Microchip PIC32MX蓝牙音频开发方案
作者:61ic    文章来源:Internet    点击数:    更新时间:2014-7-1    
关键字:通信技术,无线通信,蓝牙

Microcchip公司的PIC32MX330/350/370/430/450/470是采用MIPS microAptiv或M4K核的32位高性能MCU,采用和16位MCU引脚/外设兼容的低成本开发工具,能缩短PIC32 MCU的上市时间,主要用在高度紧凑图像/用户接口,以太网/USB/CAN连接,多任务嵌入控制和高性能音频. 本文介绍了PIC32MX330/350/370/430/450/470主要特性,框图, PIC32MX蓝牙音频开发套件主要特性,特性图和框图,以及电路图,材料清单和PCB元件布局图.

Microchip’s 32-bit portfolio with the MIPS microAptiv or M4K core offer high performance microcontrollers, and all the tools needed to develop your embedded projects. With MPLAB® Harmony software framework, low cost development tools, and pin/peripheral compatibility from 16-bit product lines, PIC32 MCUs shorten time to market and allow your designs to grow. PIC32 gives your application the processing power, memory and peripherals your design needs!

PIC32MX330/350/370/430/450/470主要特性:

Operating Conditions
•2.3V to 3.6V, -40℃ to +105℃ (DC to 80 MHz),-40℃ to +85℃ (DC to 100 MHz)
Core: 100 MHz/131 DMIPS MIPS32® M4K®
•MIPS16e® mode for up to 40% smaller code size
•Code-efficient (C and Assembly) architecture
•Single-cycle (MAC) 32x16 and two-cycle 32x32 multiply
Clock Management
•0.9% internal oscillator
•Programmable PLLs and oscillator clock sources
•Fail-Safe Clock Monitor (FSCM)
•Independent Watchdog Timer
•Fast wake-up and start-up
Power Management
•Low-power management modes (Sleep and Idle)
•Integrated Power-on Reset, Brown-out Reset, and High Voltage Detect
•0.5 mA/MHz dynamic current (typical)
•50 μA IPD current (typical)
Audio/Graphics/Touch HMI Features
•External graphics interface with up to 34 PMP pins
•Audio data communication: I2S, LJ, RJ, USB
•Audio data control interface: SPI and I2C™
•Audio data master clock:
-Generation of fractional clock frequencies
-Can be synchronized with USB clock
-Can be tuned in run-time
•Charge Time Measurement Unit (CTMU):
-Supports mTouch™ capacitive touch sensing
-Provides high-resolution time measurement (1 ns) 
Advanced Analog Features
•ADC Module:
-10-bit 1 Msps rate with one Sample and Hold (S&H)
-Up to 28 analog inputs
-Can operate during Sleep mode
•Flexible and independent ADC trigger sources
•On-chip temperature measurement capability
•Comparators:
-Two dual-input Comparator modules
-Programmable references with 32 voltage points
Timers/Output Compare/Input Capture
•Five General Purpose Timers:
-Five 16-bit and up to two 32-bit Timers/Counters
•Five Output Compare (OC) modules
•Five Input Capture (IC) modules
•Peripheral Pin Select (PPS) to allow function remap
•Real-Time Clock and Calendar (RTCC) module
Communication Interfaces
•USB 2.0-compliant Full-speed OTG controller
•Up to five UART modules (20 Mbps):
-LIN 1.2 protocols and IrDA® support
•Two 4-wire SPI modules (25 Mbps)
•Two I2C modules (up to 1 Mbaud) with SMBus support
•PPS to allow function remap
•Parallel Master Port (PMP)
Direct Memory Access (DMA)
•Four channels of hardware DMA with automatic data size detection
•32-bit Programmable Cyclic Redundancy Check (CRC)
•Two additional channels dedicated to USB
Input/Output
•15 mA or 12 mA source/sink for standard VOH/VOL and up to 22 mA for non-standard VOH
•5V-tolerant pins
•Selectable open drain, pull-ups, and pull-downs
•External interrupts on all I/O pins1 
Qualification and Class B Support
•AEC-Q100 REVG (Grade 2 -40ºC to +105ºC) planned
•Class B Safety Library, IEC 60730
Debugger Development Support
•In-circuit and in-application programming
•4-wire MIPS® Enhanced JTAG interface
•Unlimited program and six complex data breakpoints
•IEEE 1149.2-compatible (JTAG) boundary scan

PIC32MX330/350/370/430/450/470主要应用:

High Impact Graphics/User Interfaces
Ethernet/USB/CAN Connectivity
Multitasking Embedded Control
High Performance Audio


图1. PIC32MX330/350/370/430/450/470框图

PIC32MX蓝牙音频开发套件

The PIC32 Bluetooth® Audio Development Kit provides a comprehensive solution to develop Bluetooth A2DP audio streaming solutions and applications. The board is coupled with two daughter cards: the Bluetooth HCI Radio Daughter Card that demonstrates a low cost Bluetooth implementation and the Audio DAC Daughter Card that demonstrates a high quality 16/24-bit, 32-192 KHz audio conversion/amplification for line or headphones. The kit ships with demo code that enables wireless streaming digital audio from any Bluetooth enabled Smartphone or portable music player or over USB.

PIC32MX蓝牙音频开发套件主要特性:

• PIC32MX450F256L, 100 MHz, 256 KB Flash, 64 KB RAM (v1.0 and v2.0 development boards)
• PIC32MX470F512L, 100 MHz, 512 KB Flash, 128 KB RAM (v3.0 development board only)
• HCI Bluetooth Module Daughter Board (QDID certified module)
• 16-bit/24-bit, 32-192 kHz DAC/Amp Daughter Board
• USB Host/Device audio support
• USB charging
• Two-inch color LCD
• Headphone/Line-out
• Audio control function
• Bluetooth/USB audio software support for:
- Apple®
- Samsung® audio
- Google™
- Android™ Open Accessory (AOA)
- Bluetooth audio with SBC and AAC decode
- Bluetooth Stack QDID certified

PIC32MX蓝牙音频开发套件(P/N: DV320032)包括:

• PIC32 Bluetooth Audio Development Board (P/N: DM320032)
• Bluetooth HCI Radio Module Daughter Board (P/N: AC320032-1)
• 24-bit stereo DAC Line-out/Headphone Amplifier Daughter Board (P/N: AC320032-2)
• On-board preprogrammed PIC32MX450F256L or PIC32MX470F512L


图2. PIC32MX蓝牙音频开发套件特性图

图3. PIC32MX蓝牙音频开发板框图

图4. PIC32MX蓝牙音频开发板电路图:CPU,2吋图像显示器,PICtail连接器和SPI闪存

图5. PIC32MX蓝牙音频开发板电路图:电源

图6. PIC32MX蓝牙音频开发板电路图:USB控制

图7. PIC32MX蓝牙音频开发板电路图:指示电路

图8. PIC32MX蓝牙音频开发板电路图:ICSP

图9. PIC32MX蓝牙音频开发板电路图:子板(1)

图10. PIC32MX蓝牙音频开发板电路图(2)
PIC32MX蓝牙音频开发板材料清单:



蓝牙HCI无线电模块子板材料清单:

24位音频DAC/AMP子板材料清单:


图11. PIC32MX蓝牙音频开发板布局图
详情请见:
http://ww1.microchip.com/downloads/en/DeviceDoc/60001185C.pdf
http://ww1.microchip.com/downloads/en/DeviceDoc/70005140C.pdf

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