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參數(shù)資料
| 型號(hào)： | CM108 |
| 廠商： | C-Media Electronics Inc. |
| 英文描述： | USB Audio I/O Controller |
| 中文描述： | USB音頻I / O控制器 |
| 文件頁(yè)數(shù)： | 29/29頁(yè) |
| 文件大小： | 514K |
| 代理商： | CM108 |
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CM108
Integration Dual DAC, Earphone Driver, ADC,
Microphone Booster, PLL, Regulator, and USB Transceiver
Date: Nov/01/2004
Version: 1.5
- 8 -
16
SDIN
DIO, 8mA,
PD, 5VT
ADC I2S Data Input
17
ADSCLK
DIO, 4mA, SR ADC I2S Serial Clock
18
MUTEP
DI, ST, PU
Mute Playback (Edge Trigger with de-Bouncing)
19
ADLRCK
DO, 4mA, SR
ADC I2S Left / Right Clock
20
ADMCLK
DIO, 4mA, SR
11.2896MHz Output for 44.1KHz Sampled Data and
12.288MHz Output for 48KHz Sampled Data
21
LEDR
DO, SR, 8mA
LED for Mute Recording Indicator;
Output H when Recording is Muted
22
ADSEL
DI, ST, PD
ADC Input Source Select Pin
H: Use external (via I2S) ADC
L: Use internal ADC
( H: Pull Up to 3.3V; L: Pull Down to Ground )
23
TEST
DI, ST, PD
Test Mode Select Pin;
H: Test Mode
L: Normal Operation
( H: Pull Up to 3.3V; L: Pull Down to Ground )
24
AVSS1
P
Analog Ground
25
VBIAS
AO
Microphone Bias Voltage Supply (4.5V), with a small Driving
Capability
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: Line out Vpp = 3.5 Volts
L: Line out Vpp = 2.5 Volts
( H: Pull Up to 5V; L: Pull Down to Ground )
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
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