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Merge branch 'feature/support_i2s_on_h2' into 'master'

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i2s: support i2s on esp32h2

Closes IDF-6219 and IDF-6700

See merge request espressif/esp-idf!21948
This commit is contained in:
Kevin (Lao Kaiyao)
2023-01-19 10:47:33 +08:00
parent 8f82c5cdee c79187fdeb
commit 668e125dd4
36 changed files with 1315 additions and 63 deletions
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10
docs/en/api-reference/peripherals/i2s.rst
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@@ -160,7 +160,15 @@ Standard mode always has left and right two sound channels which are called 'slo
TDM Mode
^^^^^^^^
TDM(Time Division Multiplexing) mode supports upto 16 slots, these slots can be enabled by :cpp:member:`i2s_tdm_slot_config_t::slot_mask`. But due to the hardware limitation, only upto 4 slots are supported while the slot is set to 32 bit-width, and 8 slots for 16 bit-width, 16 slots for 8 bit-width. The slot communication format of TDM is almost same as standard mode, but there are some small differences between them.
TDM(Time Division Multiplexing) mode supports up to 16 slots, these slots can be enabled by :cpp:member:`i2s_tdm_slot_config_t::slot_mask`.
.. only:: SOC_I2S_TDM_FULL_DATA_WIDTH
Any data bit-width is supported no matter how many slots are enabled, that means there can be up to ``32 bit-width * 16 slots = 512 bit`` in one frame.
.. only:: not SOC_I2S_TDM_FULL_DATA_WIDTH
But due to the hardware limitation, only up to 4 slots are supported while the slot is set to 32 bit-width, and 8 slots for 16 bit-width, 16 slots for 8 bit-width. The slot communication format of TDM is almost same as standard mode, but there are some small differences between them.
- **Philips Format**: Data signal have one bit shift comparing to the WS(word select) signal. And no matter how many slots are contained in one frame, the duty of WS signal will always keep 50%.