ALC892 查看數據表（PDF） - Realtek Semiconductor

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ALC892

7.1+2 CHANNEL HD AUDIO CODEC WITH CONTENT PROTECTION

Realtek Semiconductor 

ALC892

Datasheet

7.1.2. Signaling Topology

The HDA controller supports two SDOs for the outbound stream, up to 15 SDIs for the inbound stream.

RST#, BCLK, SYNC, SDO0, and SDO1 are driven by controller to codecs. Each codec drives its own

point-to-point SDI signal(s) to the controller.

Figure 6 shows the possible connections between the HDA controller and codecs:

• Codec 0 is a basic connection. There is one single SDO and one single SDI for normal transmission

• Codec 1 has two SDOs for doubled outbound rate, a single SDI for normal inbound rate

• Codec 3 supports a single SDO for normal outbound rate, and two SDIs for doubled inbound rate

• Codec N has two SDOs and multiple SDIs

The multiple SDOs and multiple SDIs are used to expand the transmission rate between controller and

codecs. Section 7.2 Frame Composition, page 13 describes the detailed outbound and inbound stream

compositions for single and multiple SDOs/SDIs.

The connections shown in Figure 6 can be implemented concurrently in an HDA system. The ALC892 is

designed to receive a single SDO stream.

SDI14

.

.

.

...

SDI13

SDI2

HDA

SDI1

Controller SDI0

SDO1

SDO0

SYNC

BCLK

RST#

Codec 0

Codec 1

...

Codec 2

Single SDO

Single SDI

Two SDOs

Single SDO

Single SDI

Two SDIs

Figure 6. Signaling Topology

Codec N

Two SDOs

Multiple SDIs

7.1+2 Channel HD Audio Codec with Content Protection 12

Track ID: JATR-2265-11 Rev. 1.3

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