CM6206 C-MEDIA ELECTRONICS, CM6206 Datasheet - Page 10

• Manufacturer Part Number: CM6206
• Description: USB Audio I/O Controller
• Manufacturer: C-MEDIA ELECTRONICS

CM6206
High Integrated USB Audio I/O Controller
5
6
The internal registers of CM6206 can be divided to two parts. Some of them (REG0, REG1, REG2, REG3, REG4
and REG5) are 16-bit width and can be accessed via HID interface SET_RPT request. The others (REG8~
REG14) are 8-bit width and can be accessed by vendor requests.
To access registers via HID interface, users should issue a “Set Output Report” HID request. The four bytes
of output report data is organized as below:
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Block Diagram
Function Descriptions Block Diagram of CM6206
6.1
Byte [0]
Byte [1]
Byte [2]
Byte [3]
Internal Register
Figure 2：Function Block Diagram of CM6206
Bit4 = 1 => read
Bit5 = 1 => Access internal register
Register address (0, 1, 2, 3, 4, 5)
Rev. 2.1 ︱ Page 10/37
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DATAH
DATAL
Bit4 = 0 => write
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