简介

炬力北方Actions的AM835x系列是一款针对音视频UVC/UAC采集专用的SoC处理器，型号包括AM8350、AM8352两种型号。AM8350/AM8352 芯片可将 HDMI 信号采集并转换为 UVC 协议，通过 USB连接到智能设备，采集前端信号源画面的一款极具性价比的UVC视频处理器芯片。

AM835x处理器具有高性能、低功耗的32位RISC内核，支持DSP指令扩展，运行速度可达800MHz。他具有硬连线多格式视频编码器，支持多种流行的视频格式，包括全高清分辨率的MJPEG/H.264。AM835x多媒体处理器不仅内置了HDMI RX/HDMI TX接口，还集成了1个USB OTG控制器、UART、I2C、SPI等接口。

特性

✓ 32BIT RISC CORE

- 32K byte instruction cache and data cache

- F/W can program from DC up to 800MHz transparently

- DSP instruction for multi-media acceleration

- Static design allows changing clock at run-time for power saving

✓ VIDEO ENCODER

- Support ISO/IEC 14496-10/YU-T Rec.H.264

- Base Profile,Level 1-5.1 

•   Main Profile ,levels 1-5.1

• High Profile ,levels 1-5.1

- Support JPEG ITU-T Rec.T81(09/92),Baseline interleaved/JFIF

- 60 frames per second at 1920x1080 resolution for video all format

- 30 frames per second at 4k resolution

✓ IMAGE/VIDEO COMPRESSOR

- Support upto 1080P Resolution

- Support 8bit YCbCr 4:2:2 & YCbYCr/RGB

- Adaptive compress ratio up to 1:6

✓ OSD

- 1,2 OSD bitmap data width

- 256x128 size in 2 bit or 256x256 in 1 bit

✓ DISPLAY INTERFACE

- HDMI Rx/Tx support, industry standard compliance HDMI 1.3a

✓ AUDIO

- I2S IN & I2S OUT interface

- Support 32 levels volume control

✓ MEMORY Storage

- DDR2/3 SDRAM up to 4Gb @ 16bit up to 1066Mbps

- OTP ROM 64bit Chip ID

✓ DMA CONTROLLER

AM8351 Datasheet v1.0.0 Actions-micro Proprietary 10

- 8 physical channels and 4 bus channels

- Stride mode support

- Software configurable priority

✓ Boot ROM

- On chip boot ROM with boot loader

- The system could be loaded from SPI Nor flash

✓ USB 2.0 OTG 

- Complies with Universal Serial Bus Specification. Revision 2.0.

- Complies with On-The-Go Supplement to the USB2.0 Specification Revision 1.0a.

- Supports point-to-point communication with one low-speed, full-speed or high-speed device in Host mode.

- Supports full-speed or high-speed in peripheral mode.

- Supports USB Mass Storage Class Bulk-Only Transport Revision 1.0 as host or device.

- Supports Electronic still picture imaging Picture Transfer Protocol (PTP)

- Supports direct print function using pict-bridge

- Supports Universal Serial Bus Device Class Definition for Printing Devices Version 1.1 as host

- Supports Universal Serial Bus Still Image Capture Device Definition Revision 1.0 as host

- Configurable/programmable size of endpoints.

- Configurable/programmable single, double, triple or quad buffering.

- Programmable type of endpoints.

- Supports high-speed high-bandwidth Isochronous and Interrupt transfer.

- Supports suspend, resume and power managements function.

- Support USB wakeup

✓ OTHER INTERFACE

- UART/I2C/SPI

- 3 external interrupts

- 35 configurable GPIO shared with function pins

✓ POWER功耗

- 1.3v for core

- 3.3v/2.5v/1.8/1.5v for mac io,3.3v for others

- Core PLL, LCD PLL,Audio PLL and DDR PLL support spread spectrum

✓ PACKAGE封装

- QFP 128pin (epad), 14x14mm

USB视频采集卡应用参数：

• HDMI 1080P60 / 4K 30P 输入

• 支持 1080P60/ 4K 30P UVC 采集

• 兼容 USB2.0/3.0

• 立体声音频

• 支持Windows/Mac 系统、 iPadOS 17+ 和 Android 10+

• 兼容 Android/iPadOS  CapView APP

• 编码格式MJPEG

• 内存类型：内置DDR/外挂 DDR

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