CM109 View Datasheet(PDF) - C-Media Electronics
Part Name
Description
Manufacturer
CM109 Datasheet PDF : 36 Pages
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CM109
High Integration / Low Cost USB Audio Controller
for PC Internet Phone
3.3 PIN SIGNAL DESCRIPTIONS
Pin #
1
2
Symbol
SPDIFO
DW
3
DR
4
SK
5
CS
6
MUTER
7
PWRSEL
8
XI
9
XO
10
MODE
11
GPIO2
12
LEDO
13
GPIO3
14
DVSS1
15
GPIO4
16
GPIO5
17
GPIO6
18
MUTEP
19
BUZZ
20
GPIO7
21
LEDR
22
GPIO8
23
TEST
24
AVSS1
Type
DO, 8mA, SR
DIO, 8mA,
PD, 5VT
DO, 4mA, SR
DO, 4mA, SR
DO, 4mA, SR
DI, ST, PU
DI, ST
DI
DO
DI, ST
DIO, 8mA,
PD, 5VT
DO, SR, 8mA
DIO, 8mA,
PD, 5VT
P
DIO, 8mA,
PD, 5VT
DIO, 8mA,
PD, 5VT
DIO, 8mA,
PD, 5VT
DI, ST, PU
Description
SPDIF Output
USB Controller Data Read From EEPROM Interface.
EEPROM Data Output.
USB Controller Data Writes to EEPROM Interface.
EEPROM Data Input.
EEPROM Interface Clock (100KHz)
EEPROM Interface Chip Select
Mute Recording (Edge Trigger with de-Bouncing)
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
Input Pin for 12MHz Oscillator
Output Pin for 12MHz Oscillator
H: Pull Up to 3.3V; L: Pull Down to Ground
L：Headset Mode: Playback & Recording
H：Speaker Mode: Playback Only
GPIO Pin
LED for Operation; Output H for Power On; Toggling for Data Transmit
GPIO Pin
Digital Grounding
GPIO Pin
GPIO Pin
GPIO Pin
Mute Playback (Edge Trigger with de-Bouncing)
DO, 8mA, SR
DIO, 8mA,
PD, 5VT
DO, SR, 8mA
DIO, 8mA,
PD, 5VT
DI, ST, PD
Buzzer Output Pin
GPIO Pin
LED for Mute Recording Indicator; Output H when Recording is Muted
GPIO Pin
Test Mode Select Pin; Pull Low for Normal Operation
P
Analog Ground
Date: 08/Sep/2005
-7-
Version: 1.3a
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