alc850 Realtek Semiconductor Corporation, alc850 Datasheet - Page 31

• Manufacturer Part Number: alc850
• Description: Eight Channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

7.2. Vendor Defined Registers (Page ID-00h)
These registers are available to Realtek customers for specialized functions.
7.2.1.
Default: 0000h
The data in MX60 are captured from the channel status [15:0] of the S/PDIF-IN signal.
7.2.2.
Default: 0000h
The data in MX62 are captured from the channel status [29:16] of the S/PDIF-IN signal.
Eight Channel AC’97 2.3 Audio Codec
Note: Bits [13:0] are captured from the channel status [29:16] of S/PDIFI. The data from S/PDIF input is forced to 0 if
the S/PDIF input signal is unlocked. Software must check this ‘LOCK’ bit before dealing with S/PDIF input operations.
13:12
14:8
11:8
7:6
5:3
7:4
3:0
Bit
Bit
15
15
14
2
1
0
MX60 S/PDIF Input Channel Status [15:0]
MX62 S/PDIF Input Channel Status [29:15]
Type
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
Function
Generation Level (LEVEL)
Category Code (CC[6:0])
Mode[1:0]
Pre-Emphasis (PRE[2:0])
Copyright (COPY)
0: Asserted
1: Not Asserted
Non-Audio Data type (/AUDIO)
0: PCM data
1: AC3 or other digital non-audio data
Professional or Consumer Format (PRO)
0: Consumer Format
1: Professional Format
The ALC850 only supports consumer channel status format. This bit is always 0
Function
‘V’ bit in sub-frame of S/PDIFI, S/PDIFI_V
0: Data X and Y are valid
1: At least one of data X and Y is invalid
This bit is real-time updated. It indicates that the ALC850 is ready to receive S/PDIF-IN data
S/PDIF-IN Input Signal Locked by hardware, S/PDIFI_LOCK
0: Unlocked
1: Locked
Clock Accuracy (Ca[1:0])
Sample Frequency in channel status (Fs[3:0])
0000: 44.1kHz
0010: 48kHz
0011: 32kHz
Others: Reserved
Channel Number (Cn[3:0])
Source Number (Sn[3:0])
Table 33. MX62 S/PDIF Input Channel Status [29:15]
Table 32. MX60 S/PDIF Input Channel Status [15:0]
23
Track ID: JATR-1076-21 Rev. 1.4
Datasheet
ALC850