Owners manual

Interfaces

8.7. OWA

8.7.1. Overview

The OWA(One Wire Audio) provides a serial bus interface for audio data between system. This interface is widely used

for consumer audio connect.

The OWA includes the following features:

 IEC-60958 transmitter and receiver functionality

 Complies with SPDIF Interface

 Support channel status insertion for the transmitter

 Hardware Parity generation on the transmitter

 One 32×24bits FIFO (TX) for audio data transfer

 Programmable FIFO thresholds

 Interrupt and DMA support

8.7.2. Functional Description

8.7.2.1. OWA Interface Pin List

Signal Name

Direction(M)

Description

OWA_DOUT

OWA output

PA17

8.7.2.2. OWA Clock Requirement

Clock Name

Description

Requirement

apb_clk

APB bus clock

>13 MHz

s_clk

OWA serial access clock

4x24.576 MHz or 4x22.5792 MHz from CCU

8.7.2.3. OWA Block Diagram

Figure 8-13 shows the OWA block diagram.

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