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CM101S

CM101S+ USB 2CH Audio Controller(Dolby Digital Live Software Technology Bundle)

C-Media Electronics 

CM101S+

USB Audio With Dolby Digital Live Solution

3.3 PIN SIGNAL DESCRIPTIONS

Pin #

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Symbol

PAEN

GPIO

XO

XI

DVDD5V

REGV

USBDP

USBDM

DVSS

TEST

VREF

VOLADJ

AVDD

LOL

LOR

AVSS

SPDIFO

PDSW

Type

Description

Power Amplifier Control Input, Connect to a Switch or

DI, ST

Pull-High in Normal Operation.

H: Enable Power Amplifier (Normal Mode)

L: Disable Power Amplifier

DIO, 8mA, ST,

SR, PD

GPIO Pin, Controlled via Vender Specific Command

AO

Output Pin for 12MHz Oscillator

AI

Input Pin for 12MHz Oscillator

P

5V Power Supply

AO

Regulator Output 3.3V

AIO

USB Data D+

AIO

USB Data D-

P

Digital Ground

DI, ST, PD Test Mode Select Pin, Pull-Down in normal Operation

Connecting to External Decoupling Capacitor for Embedded

AO

Band gap Circuit; 2.25V Output

Analog Volume Control Input from external VR circuit.

AI

0 ~ 2.25V: +12 dB ~ 3 dB / mute

3.5 ~ 5V: 0 dB

P

5V Power Supply for Analog Circuit

AO

Line Out Left Channel

AO

Line Out Right Channel

P

Analog Ground

DO, 8mA, SR S/PDIF Data Output

Power Down Switch Control Signal Output

DO, 8mA, SR

1: Normal Mode

0: Power Down Mode (Suspend Mode)

*Note:DI / DO / DIO – Digital Input / Output / Bi-Directional Pad

U

AI / AO / AIO – Analog Input / Output / Bi-Directional Pad

P – Power Pin

SR – Slew Rate Control

ST – Schmitt Trigger

PD / PU – Pull Down / Pull Up

5VT – 5 Volt Tolerant (3.3V Pad)

Date: 09/25/2005

-8-

Version: 1.01

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