CM6533-N Datasheet, PDF (6/60 Pages) C-Media Electronics – USB 2.0 Full-Speed compliant

CM6533,CM6533N,CM6533X1,CM6533DH
USB Audio Chip
1 Description and Overview
The CM6533/CM6533N/CM6533X1/CM6533DH is a USB 2.0 audio chip built-in 8051 for flexible applications. With
integrated Tri-Colors PWM LED driver and two (2)-channel ADC/DAC and S/PDIF interface makes it suitable for
headset, docking, speaker and microphone applications. The internal 8051 can also be developed to a lot of different
applications, such as Microsoft™ Lync/Skype/VoIP device, Android Phone or Tablet/Slate docking device. The
CM6533/CM6533N/CM6533X1/CM6533DH is compatible with USB Audio Class 1.0 and USB 2.0 Full-Speed, thus it can
plug & play without any additional software installation on major operating systems. The internal DAC and ADC
support from 8 ~ 96 KHz sampling rate and 16/24 bits resolution. The hardware of CM6533, CM6533N, CM6533X1 and
CM6533DH are all the same and they only differ in firmware and software.
The CM6533/CM6533N/CM6533X1/CM6533DH integrates equalizer on both playback and recording paths to
compensate the frequency response of microphone and headphone.
The CM6533/CM6533N/CM6533X1/CM6533DH also integrates 256K Byte flash(Including 32KB F/W programming size)
and crystal but requires few passive components to make a finish product. Thus, it can save the total BOM cost and
PCB area can be smaller.
2 Features
2.1 USB Compliance
 USB 2.0 Full-Speed compliant
 USB Audio Class 1.0 compliant
 USB Human Interface Device (HID) Class 1.1 compliant
 Supports USB suspend/resume/reset functions
 Supports control, interrupt, bulk, and isochronous data transfers and overview
2.2 Integrated 8051 Microprocessor
 Embedded 8051 micro-processor to handle the command/protocol transactions
 Embedded 256K Byte SPI Flash(Including 32KB F/W programming size)
 32K Byte RAM for firmware extension and plug-in
 HID interrupts/buttons/functions can be implemented via firmware codes
 Provides maximum hardware configured flexibility with firmware code upgrade
 VID/PID/Product String can program by firmware
2.3 Control Interface
 Master/Slave I2C control interface, bus speed supports 100 and 400kbit/s
 One 4-wire SPI mater/slave interface, bus speed supports from 150k to 12Mbit/s
 12 GPIO pins and firmware programmable
 JTAG debug interface
 GPIOs are configured as HID key and LED indicators
 Tri-Colors PWM LED Driver
2.4 General
 Crystal-less (embedded crystal function)
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Rev.1.6
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