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Serial GPIO Peripheral Slide 5

A Multi-channel audio system can be developed using Serial GPIO. In this application example featuring the LPC4300 microcontroller, a Full-Speed or Hi-Speed USB device port is used to receive streaming audio data from an external source such as a laptop PC or media center. Since the LPC4300 is a dual core product with both a Cortex-M0 and Cortex-M4 CPU, the system can be architected to efficiently manage the requirements. The Cortex-M0 core manages the USB device and Serial GPIO modules, while the Cortex-M4 core is free to perform signal processing on the audio data stream. The two cores use separate connections to access the peripherals and memory, so there's no bus contention.

PTM Published on: 2014-05-15