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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)： | 28/29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
- 7 -
3.3 PIN SIGNAL DESCRIPTIONS
Pin #
Symbol
Type
Description
1
SPDIFO
DO, 8mA, SR
SPDIF Output
2
DW
DIO, 8mA,
PD, 5VT
EEPROM Interface Data read from EEPROM
3
DR
DO, 4mA, SR
EEPROM Interface Data write to EEPROM
4
SK
DO, 4mA, SR
EEPROM Interface Clock
5
CS
DO, 4mA, SR
EEPROM Interface Chip Select
6
MUTER
DI, ST, PU
Mute Recording (Edge Trigger with de-Bouncing)
7
PWRSEL
DI, ST
Chip Power Select Pin, worked with MODE Pin
Speaker Mode H：Self Power with 100mA
L：Bus Power with 500mA
Headset Mode H：Bus Power with 100mA
L：Bus Power with 500mA
( H: Pull Up to 3.3V; L: Pull Down to Ground )
8
XI
DI
Input Pin for 12MHz Oscillator
9
XO
DO
Output Pin for 12MHz Oscillator
10
MODE
DI, ST
Operating mode select
H：Speaker Mode - Playback Only
L：Headset Mode - Playback & Recording
( H: Pull Up to 3.3V; L: Pull Down to Ground )
11
GPIO2
DIO, 8mA,
PD, 5VT
GPIO Pin
12
LEDO
DO, SR, 8mA
LED for Operation;
Output H for Power On; Toggling for Data Transmit
13
GPIO3
DIO, 8mA,
PD, 5VT
GPIO Pin
14
DVSS1
P
Digital Ground
15
GPIO4
DIO, 8mA,
PD, 5VT
GPIO Pin
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