CM6206 Datasheet, PDF (22/35 Pages) C-Media Electronics – High Integrated USB Audio I/O Controller

CM6206
High Integrated USB Audio I/O Controller
6.3 Serial EEPROM Content
CM6206 supports four-wire serial EEPROM interface. When an external serial EEPROM is detected, Vendor
ID and Product ID reported within Device Descriptor will be derived from the content of serial EEPROM.
The organization of serial EEPROM is shown below:
Address = 0
Address = 1
Address = 2
Address = 3
Address = 4
Address = 5
Address = 6
Address = 7
Address = 8
Address = 9
Address = 10
Address = 11
Address = 12
Address = 13
Address = 14
Address = 15
Address = 16
Address = 17
Address = 18
Address = 19
Address = 20
Address = 21
Address = 22
Address = 23
Address = 24
Address = 25
Address = 26
Address = 27
Address = 28
Address = 29
Address = 30
Address = 31
Address = 63
16’h434dX
Vendor ID
Product ID
String 1,String 0
String 3,String 2
String 5,String 4
String 7,String 6
String 9,String 8
String 11,String 10
String 13,String 12
String 15,String 14
String 17,String16
String 19,String 18
String 21,String 20
String 23,String 22
{8’dx,MString 0}
{8’dx,MString 1}
{8’dx,MString 2}
{8’dx,MString 3}
{8’dx,MString 4}
{8’dx,MString 5}
{8’dx,MString 6}
{8’dx,MString 7}
{8’dx,MString 8}
{8’dx,MString 9}
{8’dx,MString 10}
{8’dx,MString 11}
16’hXXXX
Users can program serial EEPROM via HID interface, as described in the former section. The first word is a
magic code. Only when it matches, CM6206 will regard the serial EEPROM valid.
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