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參數(shù)資料
| 型號： | 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)： | 35/36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
- 7 -
3.3 PIN SIGNAL DESCRIPTIONS
Pin #
Symbol
Type
Description
1
SPDIFO
DO, 8mA, SR
SPDIF Output
2
DW
DIO, 8mA,
PD, 5VT
USB Controller Data Read From EEPROM Interface.
EEPROM Data Output.
3
DR
DO, 4mA, SR
USB Controller Data Writes to EEPROM Interface.
EEPROM Data Input.
4
SK
DO, 4mA, SR
EEPROM Interface Clock
(100KHz)
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
H: Pull Up to 3.3V;
L: Pull Down to Ground
Speaker Mode H：Self Power with 100mA；L：Bus Power with 500mA
Headset Mode H：Bus Power with 100mA；L：Bus Power with 500mA
8
XI
DI
Input Pin for 12MHz Oscillator
9
XO
DO
Output Pin for 12MHz Oscillator
10
MODE
DI, ST
H: Pull Up to 3.3V;
L: Pull Down to Ground
L：Headset Mode: Playback & Recording
H：Speaker Mode: Playback Only
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 Grounding
15
GPIO4
DIO, 8mA,
PD, 5VT
GPIO Pin
16
GPIO5
DIO, 8mA,
PD, 5VT
GPIO Pin
17
GPIO6
DIO, 8mA,
PD, 5VT
GPIO Pin
18
MUTEP
DI, ST, PU
Mute Playback (Edge Trigger with de-Bouncing)
19
BUZZ
DO, 8mA, SR
Buzzer Output Pin
20
GPIO7
DIO, 8mA,
PD, 5VT
GPIO Pin
21
LEDR
DO, SR, 8mA
LED for Mute Recording Indicator; Output H when Recording is Muted
22
GPIO8
DIO, 8mA,
PD, 5VT
GPIO Pin
23
TEST
DI, ST, PD
Test Mode Select Pin; Pull Low for Normal Operation
24
AVSS1
P
Analog Ground
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