如何连接accel进行i2c通信

大家好，
我们用i2c来加速这个配置：
*分开VDD和VDDIO（这个连接到CS）。
* SDA和SCL安装有10K的外部上拉电阻。
* SDO / SA0未连接（应该有内部上拉）。
是否有任何上电顺序以确保正确配置/选择i2c模式？ VDD和VDDIO之间的任何延迟？
将两条线路上电至3V，VDDIO不是3V，其电压为1.9V或类似。如果我们将CS与VDDIO断开连接。在CS中，我们得到一个'0'和VDDIO 3V。这是正常的吗？并且内部上拉电阻不会将引脚提升到高电平？
有没有关于如何连接accel进行i2c通信的示例？任何关于加电的主题演讲？
附着的是安装的传感器的图像，标记是点，数据矩阵和'T'。
在此先感谢您的帮助。

＃lis2dw12＃i2c



以下为原文




Hi to all,
We are usin this accel over i2c with this configuration:
* Separate VDD and VDDIO (this one is attached to CS).
* SDA and SCL are mounted with a external pull up resistor of 10K.
* SDO/SA0 is left unconnected (it is supposed to have an internall pull up).
Is there any power up sequence to ensure the i2c mode is properly configured/selected? Any delay between VDD and VDDIO?
Powering up both lines to 3V, the VDDIO is not 3V, its in 1.9V or similar. If we disconnect CS from VDDIO. In CS we get a '0' and in VDDIO 3V. Is this normal? And the internall pull up resistor does not lift the pin to high?
Is there any example of how to connect the accel for i2c communications? any keynote for the power up?
Attached is an image of the mounted sensor were the marking is a dot, a datamatrix and a 'T'.
Thanks in advance for your help.

#lis2dw12 #i2c