CM6533DH datasheet(3/60 Pages) CMEDIA

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CM6533,CM6533N,CM6533X1,CM6533DH

USB Audio Chip

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www.cmedia.com.tw

Rev.1.6

TABLE OF CONTENTS

Release Notes.................................................................................................. 2

TABLE OF CONTENTS........................................................................................... 3

Description and Overview ............................................................................... 6

Features.................................................................................................... 6

2.1

USB Compliance................................................................................ 6

2.2

Integrated 8051 Microprocessor ............................................................. 6

2.3

Control Interface .............................................................................. 6

2.4

General.......................................................................................... 6

2.5

Audio I/O........................................................................................ 7

2.6

General Firmware Volume Setting Value ................................................... 8

2.7

CM6533/CM6533N/CM6533X1/CM6533DH Compared Table.............................. 8

Applications ............................................................................................... 9

Pin Assignment ...........................................................................................10

4.1

CM6533 Pin-out Diagram (LQFP48) .........................................................10

4.2

CM6533N Pin-out Diagram (QFN48) ........................................................11

4.3

CM6533X1 Pin-out Diagram (LQFP48) ......................................................12

4.4

CM6533DH Pin-out Diagram (LQFP48)......................................................13

4.5

Pin Description ................................................................................14

4.6

Pin Circuit Diagrams..........................................................................17

USB Audio Topology......................................................................................18

5.1

CM6533N/CM6533 Headset Topology.......................................................18

5.2

CM6533X1/CM6533DH Headset Topology ..................................................19

Function Description ....................................................................................20

6.1

Playback Equalizer ...........................................................................20

6.1.1

5-band equalizer ........................................................................20

6.1.2

Four (4) Preset EQ Mode................................................................22

6.2

Recording Equalizer ..........................................................................23

6.3

Recording AGC.................................................................................23

6.4

HID Function...................................................................................25

6.4.1

HID Interrupt in..........................................................................25

6.4.2

HID get_input_report ...................................................................26

6.4.3

HID set_output_report..................................................................27

6.5

Vendor Command Definition ................................................................28

6.5.1

Vendor Command Read .................................................................28

6.5.2

Vendor Command Write ................................................................28

6.5.3

USB Vendor Requests....................................................................28

6.5.4

Simple Process of Firmware Update ..................................................29

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