ALC892 データシートの表示（PDF） - Realtek Semiconductor

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ALC892

7.1+2 CHANNEL HD AUDIO CODEC WITH CONTENT PROTECTION

Realtek Semiconductor 

ALC892

Datasheet

7.2.2. Outbound Frame – Multiple SDOs

The HDA controller allows two SDO signals to be used to stripe outbound data, completing transmission

in less time to get more bandwidth. If software determines the target codec supports multiple SDO

capability, it enables the ‘Stripe Control’ bit in the controller’s Output Stream Control Register to initiate

a specific stream (Stream ‘A’ in Figure 9) to be transmitted on multiple SDOs. In this case, the MSB of

the data stream is always carried on SDO0, the second bit on SDO1 and so forth.

SDO1 is for transmitting a striped stream. The codec does not support multiple SDOs connected to

SDO0.

To guarantee all codecs can determine their corresponding stream, the command stream is not striped. It

is always transmitted on SDO0, and copied on SDO1.

Figure 9. Striped Stream on Multiple SDOs

7.1+2 Channel HD Audio Codec with Content Protection 14

Track ID: JATR-2265-11 Rev. 1.3

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