- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello
I use the device wwhich is CY8CMBR3116-LQXI.
It can select I2C speed to 50、100、400 kHz on I2C speed setting.
how range does I2C seting of host acceptable to frequency gap from slave setting?
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Suzuki-san,
Good morning.
50kHz, 100kHz, 400kHz, all are standard speed of I2C clock. The spec can be found in I2C standard spec: https://www.nxp.com/docs/en/user-guide/UM10204.pdf .
Hence, in my mind, I2C speed options of a host should be 50kHz, 100kHz, 400kHz either.
Besides,
if I2C slave clock is set as 50kHz, it can support 50kHz I2C_Clk from host;
if I2C slave clock is set as 100kHz, it can support 50kHz, 100kHz I2C_Clk from host;
if I2C slave clock is set as 400kHz, it can support 50kHz ,100kHz, 400kHz I2C_Clk from host.
I hope that I understood your questions correctly and above information can help you out.
Thanks,
Ryan
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Suzuki-san,
Good morning.
50kHz, 100kHz, 400kHz, all are standard speed of I2C clock. The spec can be found in I2C standard spec: https://www.nxp.com/docs/en/user-guide/UM10204.pdf .
Hence, in my mind, I2C speed options of a host should be 50kHz, 100kHz, 400kHz either.
Besides,
if I2C slave clock is set as 50kHz, it can support 50kHz I2C_Clk from host;
if I2C slave clock is set as 100kHz, it can support 50kHz, 100kHz I2C_Clk from host;
if I2C slave clock is set as 400kHz, it can support 50kHz ,100kHz, 400kHz I2C_Clk from host.
I hope that I understood your questions correctly and above information can help you out.
Thanks,
Ryan