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ALC892

7.1+2 CHANNEL HD AUDIO CODEC WITH CONTENT PROTECTION

Realtek Semiconductor 

ALC892

Datasheet

The cadence ‘12-11-11-12-11-11-12-11-11-12-11-11-11- (repeat)’ interleaves 13 frames containing no

sample blocks in every 160 frames. It provides a low long-term frequency drift for 44.1kHz of delivery

rate. Rates in sub-multiples (1/n) of 44.1kHz also follow this cadence AND interleave n empty frames.

Rates in multiples (n) of 44.1kHz applying this cadence contain n sample blocks in the non-empty frame

AND interleave an empty frame between non-empty frames (Table 6, page 18).

(Sub) Multiple

1/6

1/4

1/3

1/2

2/3

1

2

4

Table 4. Defined Sample Rate and Transmission Rate

48kHz Base

44.1kHz Base

8kHz (1 Sample Block Every 6 Frames) -

12kHz (1 Sample Block Every 4 Frames) 11.025kHz (1 Sample Block Every 4 Frames)

16kHz (1 Sample Block Every 3 Frames) -

-

22.05kHz (1 Sample Block Every 2 Frames)

32kHz (2 Sample Blocks Every 3 Frames) -

48kHz (1 Sample Block per Frame)

44.1kHz (1 Sample Block per Frame)

96kHz (2 Sample Blocks per Frame)

88.2kHz (2 Sample Blocks per Frame)

192kHz (4 Sample Blocks per Frame)

176.4kHz (4 Sample Blocks per Frame)

Table 5.

Rate

Delivery Cadence

8kHz

YNNNNN (Repeat)

12kHz

YNNN (Repeat)

16kHz

32kHz

YNN (Repeat)

Y2NN (Repeat)

48kHz

96kHz

192kHz

Y (Repeat)

Y2 (Repeat)

Y4 (Repeat)

N: No sample block in a frame.

Y: One sample block in a frame.

Yx: X sample blocks in a frame.

48kHz Variable Rate of Delivery Timing

Description

One Sample Block is Transmitted in Every 6 Frames

One Sample Block is Transmitted in Every 4 Frames

One Sample Block is Transmitted in Every 3 Frames

Two Sample Blocks are Transmitted in Every 3 Frames

One Sample Block is Transmitted in Every Frame

Two Sample Blocks are Transmitted in Each Frame

Four Sample Blocks Are Transmitted In Each Frame

7.1+2 Channel HD Audio Codec with Content Protection 17

Track ID: JATR-2265-11 Rev. 1.3

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