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4G模块 GobiNet

linux spi 测试程序，用法： ./spi_test -D /dev/spidev0.0 -s 1000000 -b 8 -v -p "12345678" -H -O

General Description The MAX96705 is a compact serializer with features especially suited for automotive camera applications. It is function and pin compatible with the MAX9271. In highbandwidth mode, the parallel-clock maximum is 116MHz for 12-bit linear or combined HDR data types. The embedded control channel operates at 9.6kbps to 1Mbps in UART, I2C, and mixed UART/I2C modes, allowing programming of serializer, deserializer, and camera registers independent of video timing. For driving longer cables, the IC has programmable pre/deemphasis. Programmable spread spectrum is available on the serial output. The serial output meets ISO 10605 and IEC 61000-4-2 ESD standards. The core supply range is 1.7V to 1.9V, and the I/O supply range is 1.7V to 3.6V. The MAX96705 is available in a 32-pin (5mm x 5mm) TQFN package with 0.5mm lead pitch, and operates over the -40°C to +115°C temperature range

完整版MAX9286英文数据手册，文档介绍详细，详细说明寄存器的配置，数据格式，典型的应用案例等，1.5Gbps高速传输的MAX9286可以连接4路GMSL摄像头，可兼容MAX96705、MAX9271等串行器。可使用UART或者IIC接口控制MAX9286芯片进行读写寄存器等操作，方便用户设计使用。

TX2实现双声卡驱动设计，并实现录音与播放同时进行，硬件上是使用两个codec(tlv320aic32x4)，一个作为音频输出，另一个作为音频输入，两个音频通道互不影响。