CM6206 Datasheet, PDF (17/35 Pages) C-Media Electronics – High Integrated USB Audio I/O Controller

CM6206
High Integrated USB Audio I/O Controller
CM6206 supports two vendor specific requests. The formats of vendor requests are shown below:
Vendor command writes
Offset
Field
0
bmRequestType
1
bRequest
2
wValue_L
3
wValue_H
4
wIndex
6
wLength
Vendor command reads
Offset
Field
0
bmRequestType
1
bRequest
2
wValue
4
wIndex
6
wLength
Size
1
1
1
1
2
2
Size
1
1
2
2
2
Value (H)
43
01
Data
00
Address
0000
Description
Write data
Write address
Value (H)
C3
81
0000
Address
Length
Description
Read address
Length must less than or equal to 4
There are only two registers can be accessed via vendor requests.
REG8
Address:
Reset State:
0x08
0xb2
7
6
5
4
3
2
1
0
UNENCRDATA
Bit
Number
7-0
Bit
Mnemonic
UNENCRDATA
Read/
Write
R/W
Function
Raw data for encryption (write) or after encryption (read)
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Rev. 2.3 ︱ Page 17/37