alc861 Realtek Semiconductor Corporation, alc861 Datasheet - Page 18

• Manufacturer Part Number: alc861
• Description: 7.1 Channel High Definition Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

7.1 Channel High Definition Audio Codec
SYNC
Previous Frame
SDO
Frame SYNC
Sample 1
Block 1
SYNC
BCLK
SDO
Command Stream
Sample Block(s)
msb
A 48kHz Frame is composed of Command stream and multiple Data streams
Sample 2
Block 2
...
lsb
Figure 7.
Previous Stream
..
..
.
.
msb first in a sample
Preamble Stream=10
Stream 'A' Data
Figure 6.
Stream 'A' Tag
(4-Bit)
(Here 'A' = 5)
7 6 5 4
One or multiple blocks in a stream
Sample Z
Block Y
Stream Tag
SDO Stream Tag is Indicated in SYNC
msb
1
3
(4-Bit)
For 48kHz rate, only Block1 is included
For 96kHz rate, Block1 includes (N)
includes (N+1)
Z channels of PCM sample
SDO Outbound Frame
0
2
lsb
1 0
1
10
0
th
Data of Stream 10
time of samples
Stream 'X' Tag
(Here 'X' = 6)
Stream 'X' Data
Track ID: JATR-1076-21
Null Field
th
time of samples, Block2
0s
Padded at the
end of Frame
Next Frame
Datasheet
ALC861
Rev. 1.3