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Alif Semiconductor /AE722F80F55D5AS_CM55_HE_View /LPPDM /PDM_CTL1

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Interpret as PDM_CTL1

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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 0 (BYP_IIR)BYP_IIR 0 (BYP_FIR)BYP_FIR 0 (Val_0x0)PKDET_NODE 0SAMPLE_PHASE0 (Val_0x0)SAMPLE_ADVANCE 0 (USE_DMA_HANDSHAKE)USE_DMA_HANDSHAKE

SAMPLE_ADVANCE=Val_0x0, PKDET_NODE=Val_0x0

Description

PDM Audio Control Register 1

Fields

BYP_IIR

Bypass DC blocking IIR filter.
BYP_FIR

Bypass FIR filter.
PKDET_NODE

Peak detection node.

0 (Val_0x0): Before gain stage

1 (Val_0x1): After gain stage
SAMPLE_PHASE

Sampling phase of PDM data in units of PDM_CLK period. Adjust to compensate for routing delay skew between PDM_Ci and PDM_Di and to meet sampling time requirement of the microphone.
SAMPLE_ADVANCE

Sampling of PDM data by SAMPLE_PHASE number of PDM_CLK periods around PDM_Ci edges. Adjust to compensate for routing delay skew between PDM_Ci and PDM_Di and to meet sampling time requirement of the microphone.

0 (Val_0x0): Retard sampling

1 (Val_0x1): Advance sampling
USE_DMA_HANDSHAKE

Use DMA handshaking signals for flow control.

Links

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Register License

THIS SOFTWARE IS PROVIDED “AS IS”. NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. ALIF SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.

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Register Reference

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