Hello,
I would like to utilize the SPI differential clock output in the ESP32-S3. Unfortunately I cannot find any documentation anywhere on how to enable the feature- none in the technical reference manual, none in ESP-IDF, and none from googling. Is there any way to use this feature?
ESP32-S3 SPICLK_DIFF Enable
-
- Posts: 37
- Joined: Mon Aug 28, 2017 10:25 am
Re: ESP32-S3 SPICLK_DIFF Enable
Hi especiallyconfused,
There is a register SPI_MEM_SPI_FMEM_CLK_DIFF_EN. When this is enabled, the DIFF clock will be enabled.
After that, you need to switch the IOMUX of GPIO 47 and 48 by `PIN_FUNC_SELECT(IO_MUX_GPIO47_REG, FUNC_SPICLK_P_SPICLK_DIFF);`, etc.
btw, maybe you need to do this when the cache is disabled. Do this in the place where MSPI is initialized
There is a register SPI_MEM_SPI_FMEM_CLK_DIFF_EN. When this is enabled, the DIFF clock will be enabled.
After that, you need to switch the IOMUX of GPIO 47 and 48 by `PIN_FUNC_SELECT(IO_MUX_GPIO47_REG, FUNC_SPICLK_P_SPICLK_DIFF);`, etc.
btw, maybe you need to do this when the cache is disabled. Do this in the place where MSPI is initialized
Who is online
Users browsing this forum: Baidu [Spider] and 45 guests