IP PortfolioInterface controllersaudio
of_pdm_mic
PDM microphone interface
Maturity plannedTargets FPGA + ASICDifficulty MediumPriority 2
Interface for up to 8 PDM digital microphones with clock generation, CIC plus FIR decimation to PCM and AXI-Stream output.
Planned. This block is specified in the catalog with its interfaces and targets. No implementation exists yet; the skeleton command below generates a lint-clean shell with its ports and registers.
Interfaces
| Port | Direction | Kind | Width | Notes |
|---|---|---|---|---|
| ctrl | in/out | APB control bus | 32 | Control and status registers, including ID, VERSION and STATUS |
| irq | out | interrupt | 1 | Interrupt request |
| pdm_clk | out | clock | 1 | |
| pdm_dat | in | parallel | 4 | |
| pcm | out | AXI4-Stream | 32 |
Standards
No external standard applies.
More in audio
| ID | Block | Maturity |
|---|---|---|
| of_i2s_tdm | I2S / TDM audio port | simulated |
| of_soundwire | MIPI SoundWire manager | planned |
| of_spdif | S/PDIF transmitter and receiver | planned |