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__FORCETOC__
==Peripheral Audio ==
=== Description ===
The Audio I2S module provides a synchronous audio interface available on ORCA (SAI) that supports full-duplex serial interfaces with frame synchronization such as I2S, AC97, TDM, and codec/DSP interfaces. It supports the following standards and features: * Transmitter and receiver with independent bit clock and frame sync supporting 8 data lines* Receiver with independent bit clock and frame sync supporting 8 data lines* Each data line can support a maximum Frame size of 32 words* Asynchronous 128 x 32-bit FIFO for each transmit and receive data line* Supports packing of 8-bit and 16-bit data into each 32-bit FIFO word* Supports combining multiple data line FIFOs into single data line FIFO* Independent 32-bit timestamp counters and bit counters for monitoring transmit and receive progressThe Sony/Philips Digital Interface (SPDIF) audio block is based on xxxxx ''TBD:SOC name'' SoCa stereo transceiver that allows the processor to receive and transmit digital audio.
The Audio port supports PDM Microphone Interface (MICFIL) includes the following standards and features:* Decimation filters:** Fixed filtering characteristics for audio application.** 24-bit signed filter output.** Maximum dynamic range: 120dB.** Internal clock divider for a programmable PDM clock generation.** Full or partial set of channels operation with individual enable control.** Programmable decimation rate.** Programmable DC remover.** Range adjustement capability.** FIFOs with interrupt and DMA capability.** Each FIFO with 32 entries length.* Hardware Voice Activity Detector (HWVAD).** Interrupt capability.** Zero-Crossing Detection (ZCD) option.The enhanced audio return channel (eARC) provides an advanced audio stream through the HDMI interface.
The asyncronous sample rate converter (ASRC) is a digital module that converts audio from a source sample rate to a destination sample rate. The primary features for the ASRC are as follows:* High4 Contexts -Definition Multimedia Interface Specification, Version 1.4a groups of channels with an independent time base* Support for up to 1080p at 60Hz HDTV display resolutions Fully independent and concurrent context control* Simultaneous processing of up to QXGA graphic display resolutions. 32 audio channels* Support Programmable filter charachteristics for 4k x 2k each context* 32, 24, 20, and 3D video formats 16-bit fixed point audio sample support* Support for up 32-bit floating point audio sample support* 8kHz to 384 kHz sample rate* 1/16-bit Deep Color modesto 8x sample rate conversion ratio* Software control of fine conversion ratio
===Pin mapping===
The Pin mapping is described in the [[ORCA SOM/ORCA Hardware/Pinout_Table | Pinout table section]]
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[[Category:ORCA]]