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SPDIFRX外设旨在接收符合IEC-60958和IEC-61937的S/PDIF数据流。 这些标准支持高达高采样率的简单立体声流以及压缩的多声道环绕声,例如杜比或DTS(最高5.1)所定义的环绕声。

特性:

  • 最大4个输入
  • 最大符号率:12.288 MHz
  • 支持32至192 kHz的立体声流


外设分配

DomainPeripheralRuntime allocationComment
InstanceCortex-A7
secure
(OP-TEE)
Cortex-A7
non-secure
(Linux)
Cortex-M4

(STM32Cube)
AudioSPDIFRXSPDIFRX
Assignment (single choice)
&spdifrx {
	pinctrl-names = "default", "sleep"; 
	pinctrl-0 = <&spdifrx_pins_a>;
	pinctrl-1 = <&spdifrx_sleep_pins_a>
	/* Use spdifrx_pins_a instead of spdifrx_sleep_pins_a configuration,
	to allow IEC958 status bits capture, when an audio stream record is
	not active. Note that sleep state has to be defined, to allow pin state
	recovery from low power modes. */

	spdifrx_port: port {
		spdifrx_endpoint: endpoint {
			remote-endpoint = <&spdif_in_endpoint>;
		};
	};
};
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