CM106-L+ C-Media Electronics, CM106-L+ Datasheet - Page 20

• Manufacturer Part Number: CM106-L+
• Description: USB Audio I/O Controller
• Manufacturer: C-Media Electronics

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Users can distinguish the source of input report by Byte[0], Byte[1] and Byte[2] consist a word
which may be the content of addressed register or serial EEPROM. It may also be an arbitrary
word programmed by external MCU. In addition, Byte[0] carries the information of HID button
status (MUTE, VDN and VUP), and phone jack sense (HEADPON). VDN/VUP would be 1 when
VOLDN/VOLUP button is pressed, and keeps pressed (VOLDN/VOLUP keeps 0). MUTE would
be 1 when MUTEP button is pressed, and would be cleared to 0 after USB host reads the input
report. HEADPON would be 1 when headphone is plugged in (PHONES is 1).
Refer to the following tables for the definition of internal registers can be accessed via HID
interface:
Date: 08/19/2005
4
DACX2en
15
GPIO2_o
Number
Number
12-0
Bit
Bit
15
15
14
13
12
10
11
7
9
8
7
14
13
REG1
REG0
CSR
DACX2en
FS
PLLBINen
SOFTMUTEen
GPIO4_o
GPIO4_OEN
GPIO3_o
GPIO3_OEN
GPIO2_o
GPIO2_
Mnemonic
OEN
Mnemonic
FS
14
6
Bit
12
Bit
GPIO1_o
11
PLLBINe
13
n
5
Read/
Write
R/W
10
Read/
Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
High End 8CH DAC and 2CH ADC Integrated Solution
SOFTMU
GPIO1_
9
SPDIF out control
TEen
OEN
DAC X 2 enable
ADC full scale setting
PLL binary search enable
Soft mute enable
Gpio4 signal
Gpio4 output enable
Gpio3 signal
Gpio3 output enable
Gpio2 signal
12
4
8
- 20 -
GPIO4_o
LOWFIR
7
SET
11
3
CSR
Reset State: 0xb000
Reset State: 0x0000
6
Address: 0x01
Address: 0x00
SPDIFLO
GPIO4_
5
Function
Function
OEN
OP
10
2
4
GPIO3_o
DIS_SPD
3
IFO
9
1
2
CM106-F+/L+
Version： 1.01
SPDIFMI
GPIO3_
1
OEN
X
8
0
0