CM6533,CM6533N,CM6533X1,CM6533DH
USB Audio Chip
TABLE OF CONTENTS
Release Notes.................................................................................................. 2
TABLE OF CONTENTS........................................................................................... 3
1
2
Description and Overview ............................................................................... 6
Features.................................................................................................... 6
2.1
2.2
2.3
2.4
2.5
2.6
2.7
USB Compliance................................................................................ 6
Integrated 8051 Microprocessor ............................................................. 6
Control Interface .............................................................................. 6
General.......................................................................................... 6
Audio I/O........................................................................................ 7
General Firmware Volume Setting Value ................................................... 8
CM6533/CM6533N/CM6533X1/CM6533DH Compared Table.............................. 8
3
4
Applications ............................................................................................... 9
Pin Assignment ...........................................................................................10
4.1
4.2
4.3
4.4
4.5
4.6
CM6533 Pin-out Diagram (LQFP48) .........................................................10
CM6533N Pin-out Diagram (QFN48) ........................................................11
CM6533X1 Pin-out Diagram (LQFP48) ......................................................12
CM6533DH Pin-out Diagram (LQFP48)......................................................13
Pin Description ................................................................................14
Pin Circuit Diagrams..........................................................................17
5
6
USB Audio Topology......................................................................................18
5.1
5.2
CM6533N/CM6533 Headset Topology.......................................................18
CM6533X1/CM6533DH Headset Topology ..................................................19
Function Description ....................................................................................20
6.1
Playback Equalizer ...........................................................................20
6.1.1
6.1.2
5-band equalizer ........................................................................20
Four (4) Preset EQ Mode................................................................22
6.2
6.3
6.4
Recording Equalizer ..........................................................................23
Recording AGC.................................................................................23
HID Function...................................................................................25
6.4.1
HID Interrupt in..........................................................................25
HID get_input_report ...................................................................26
HID set_output_report..................................................................27
6.4.2
6.4.3
6.5
Vendor Command Definition ................................................................28
6.5.1
Vendor Command Read.................................................................28
Vendor Command Write ................................................................28
USB Vendor Requests....................................................................28
Simple Process of Firmware Update..................................................29
6.5.2
6.5.3
6.5.4
Page 3 / 60
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