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參數(shù)資料
| 型號(hào)： | CM109 |
| 廠商： | C-Media Electronics Inc. |
| 英文描述： | USB I/O Controller |
| 中文描述： | 的USB I / O控制器 |
| 文件頁數(shù)： | 36/36頁 |
| 文件大?。?/td> | 618K |
| 代理商： | CM109 |
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CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
Date: 08/Sep/2005
Version:
1.3a
- 8 -
25
VBIAS
AO
Microphone Bias Voltage Supply (4.5V)
26
VREF
AO
Connecting to External Decoupling Capacitor for Embedded Bandgap
Circuit; 2.25V Output
27
MICIN
AI
Microphone Input
28
VSEL
AI
Line Out Voltage Swing Select
H: Pull Up to 5V, L: Pull Down to Ground
L: 2.5Vpp Output；H: 3.5Vpp Output
29
AVDD1
P
5V Analog Power for Analog Circuit
30
LOL
AO
Line Out Left Channel
31
LOBS
AO
DC 2.25V Output for Line Out Bias
32
LOR
AO
Line Out Right Channel
33
AVSS2
P
Analog Ground
34
AVDD2
P
5V Analog Power for Analog Circuit
35
DVDD
P
5V Power Supply to Internal Regulator
36
DVSS2
P
Digital Grounding
37
REGV
AO
3.3V Reference Output for Internal 5V
3.3V Regulator
38
MSEL
DI, ST
Mixer Enable Select
H: Pull Up to 3.3V, L: Pull Down to Ground
L: Without Mixer; H: With Mixer (With Default Mute)
USB Descriptors are changed accordingly
39
VOLUP
DI, ST, PU
Volume Up (Edge Trigger with de-Bouncing)
40
PDSW
DO, 4mA , OD
Power Down Switch Control (for PMOS Polarity)
0: Normal Mode, 1: Power Down Mode
41
USBDP
AIO
USB Data D+
42
USBDM
AIO
USB Data D-
43
GPIO1
DIO, 8mA,
PD, 5VT
GPIO Pin
44
SCLK
DIO, 8mA,
PD, 5VT
External MCU Serial Bus Clock Pin
45
MINT
DO, 4mA, SR
External MCU Interrupt Pin
When Register Address 4 ~ 7 has new data, MINT is set Low; after
MCU read MINT is reset to H
46
SDAT
DIO, 8mA,
PD, 5VT
External MCU Serial Bus Data Pin
47
MCLK
DO, 4mA, SR
External MCU Clock Pin, Clock Frequency is Programmable
Default is 1.5 MHz (Options Include, 6MHz, 3MHz, 1.5MHz)
48
VOLDN
DI, ST, PU
Volume Down (Edge Trigger with de-Bouncing)
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