imx6 uart 带宽问题

[zengzhaoping]

imx6q uart带宽问题：

现在项目准备采样uart传输蓝牙音频数据，但是对imx6 uart的带宽有点疑问，

i.MX 6Dual/6Quad Linux Reference Manual.pdf中的描述是

• Standard Linux baud rates up to 4 Mbps

1、波特率的单位是bps？

2、内核driver（serial_core.c） 支持的最大波特率是921600；如果波特率为 921600转化为bps是多少？

3、how to up to 4Mbps？

[jimmychan · Accepted solution]

1.  bps = baud per second x the number of bit per baud. Now, bit per baud is 1 bit because only 0 or 1. So, Baud rate = Bit rate.

2. 921600 bps.

3. The fastest module clock is 66.5MHz. So the UART max. baud rate is 4.15Mbit/s. (for details, please read the i.MX6Q RM Chapter 64.4.2.2 Maximum Baud Rate).