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Espressif Systems /ESP32-P4 /SPI3 /SPI_CLOCK

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Interpret as SPI_CLOCK

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31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0SPI_CLKCNT_L0SPI_CLKCNT_H0SPI_CLKCNT_N0SPI_CLKDIV_PRE 0 (SPI_CLK_EQU_SYSCLK)SPI_CLK_EQU_SYSCLK

Description

SPI clock control register

Fields

SPI_CLKCNT_L

In the master mode it must be equal to spi_clkcnt_N. In the slave mode it must be 0. Can be configured in CONF state.
SPI_CLKCNT_H

In the master mode it must be floor((spi_clkcnt_N+1)/2-1). In the slave mode it must be 0. Can be configured in CONF state.
SPI_CLKCNT_N

In the master mode it is the divider of spi_clk. So spi_clk frequency is system/(spi_clkdiv_pre+1)/(spi_clkcnt_N+1). Can be configured in CONF state.
SPI_CLKDIV_PRE

In the master mode it is pre-divider of spi_clk. Can be configured in CONF state.
SPI_CLK_EQU_SYSCLK

In the master mode 1: spi_clk is eqaul to system 0: spi_clk is divided from system clock. Can be configured in CONF state.

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Register License

Copyright 2024 Espressif Systems (Shanghai) PTE LTD

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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Register Reference

https://github.com/cmsis-svd/cmsis-svd-data