CM6642 192KHz usb免驱声卡资料.pdf-资料库

DESCRIPTION The CM6642 is a low power single chip USB 2.0 High-Speed audio codec built-in MCU for flexible applications. With integrated PWM LED driver and 3-channel ADC/ 2-channel DAC and S/PDIF interface that makes it suitable for headset, headphone, docking, speakers, and microphone applications. The internal MCU can also be developed to a lot of different applications, such as VoIP device, Mobile Phone or Tablet/Slate docking device. The CM6642 is compatible with USB Audio Class 1.0/2.0 and USB 2.0 High-Speed, thus it can plug & play without any additional software installation on major operating systems. The internal DAC support from 44.1~192 KHz and ADC support from44.1~192 KHz sampling rate with 16/24 bits resolution. The CM6642 also integrates 16K Byte OTP and is crystal-less design, just requires few passive components to make a finish product. Thus, it can save the total BOM cost and PCB area can be smaller. BLOCK DIAGRAM USB Interface s u B l o r t n o C Analog JD Internal Clock ANC OTP 16K CM6642 USB 2.0 High-Speed Audio Codec FEATURES  USB 1.1/2.0 Full-Speed and High-Speed compliant  USB Audio Class 1.0 and 2.0 compliant  Two (2)-channel DAC for audio output interface  Three (3)-channel ADC for audio and ANC Microphone Input  Built-in S/PDIF transmitter  Built-in Hardware ANC (Active Noise Cancellation)  Supports USB suspend/resume/reset functions  Embedded low-power MCU with 16K Byte OTP  Supports OMTP and CTIA auto switch on a 4-pole jack  Integrated PWM LED driver  Master/Slave H/W I2C/SPI control interface for external audio devices or FLASH access  Supports embedded oscillator without external crystal  Built-in Class-G Ultra low Power headphone amplifier  On chip watchdog timer  Audio jack detection function  Support JD,4-Button Headset in line with customizable multi function control support ADC ADC ADC DAC DAC Mixer SLEEVE RING2 LINE_L LINE _R HP OUT_L HP OUT_R SPDIF OUT GPIO x 10 PWM LED X 1 I2C, SPI Page 1 / 13 www.cmedia.com.tw Rev.1.0 Copyright© C-Media Electronics Inc.

Release Notes Revision 0.9 0.91 0.92 1.0 Date 2016/10/05 2016/12/12 2017/02/16 2017/03/01 CM6642 USB 2.0 High-Speed Audio Codec Description First release. ADC Sample rate support 192KHz Modify Gain range Formal release Page 2 / 13 www.cmedia.com.tw Rev.1.0 Copyright© C-Media Electronics Inc.

TABLE OF CONTENTS CM6642 USB 2.0 High-Speed Audio Codec Release Notes TABLE OF CONTENTS 1 Description and Overview ............................................................................... 2 .................................................................................................. 2 ........................................................................................... 3 4 Features.................................................................................................... 4 4 2.1 2.2 4 4 2.3 4 2.4 2.5 4 5 6 6 7 8 8 Absolute Maximum Ratings Recommended Operation Condition ........................................................ 8 DC Characteristics ............................................................................. 8 SPDIF Output Timing .......................................................................... 8 I2C Control Interface .......................................................................... 9 Analog Performance .......................................................................... 10 11 USB Compliance................................................................................ Integrated Micro Controller Unit Microprocessor ......................................... Control Interface .............................................................................. General.......................................................................................... Audio I/O........................................................................................ 3 Applications ............................................................................................... Pin Assignment ............................................................................................ 4 4.1 CM6642 Pin-out Diagram (QFN48) ........................................................... 4.2 Pin Description ................................................................................. Electrical Characteristics ................................................................................ 5.1 ................................................................... 5.2 5.3 5.4 5.5 5.6 Package Dimension of CM6642 ......................................................................... 5 6 Page 3 / 13 www.cmedia.com.tw Rev.1.0 Copyright© C-Media Electronics Inc.

CM6642 USB 2.0 High-Speed Audio Codec 1 Description and Overview The CM6642 is a low power single chip USB 2.0 High-Speed audio codec built-in MCU for flexible applications. With integrated PWM LED driver and 3-channel ADC/ 2-channel DAC and S/PDIF interface that makes it suitable for headset, headphone, docking, speakers, and microphone applications. The internal MCU can also be developed to a lot of different applications, such as VoIP device, Mobile Phone or Tablet/Slate docking device. The CM6642 is compatible with USB Audio Class 1.0/2.0 and USB 2.0 High-Speed, thus it can plug & play without any additional software installation on major operating systems. The internal DAC support from 44.1~192 KHz and ADC support from44.1~192 KHz sampling rate with 16/24 bits resolution. The CM6642 also integrates 16K Byte OTP and crystal and just 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 1.1/2.0 Full-Speed and High-Speed compliant  USB Audio Class 1.0 and 2.0 compliant  USB Human Interface Device (HID) Class 1.1 compliant  Supports USB suspend/resume/reset functions  Support Selective Suspend mode 2.2 Integrated Micro Controller Unit Microprocessor  Embedded MCU micro-processor to handle the command/protocol transactions  Embedded 16K Byte OTP  4K 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  12 GPIO pins and firmware programmable  GPIOs are configured as HID key and LED indicators  PWM LED Driver 2.4 General  Crystal-less (embedded crystal function)  Single 5V power supply (embedded 5V to 1.8V regulator for digital core, 5V to 1.8/3.3V regulator for digital IO, 5V to 1.8V regulator for analog codec)  1.8/3.3V digital I/O pads with 5V tolerance  Industrial standard QFN-48 package (5x6.5mm) 2.5 Audio I/O  Playback Stream: Page 4 / 13 www.cmedia.com.tw Rev.1.0 Copyright© C-Media Electronics Inc.

CM6642 USB 2.0 High-Speed Audio Codec  Speaker/Headphone    Sample Rates: 44.1K/48K/96K/192KHz Supports Bit Length: 16/24bits DAC Gain Range is -65.6 ~ 0dB  S/PDIF transmitter   Sample Rates: 44.1K/48K/96K/192KHz Supports Bit Length: 16/24 bits  Recording Stream:  Microphone    Sample Rates: 44.1K/48K/96K/192KHz Supports Bit Length: 16/24 bits ADC gain range is -33.5 ~ 30dB  A-A path Stream:  Line In to playback A-A path  Mix Line input to stereo playback both L/R channel  The Line In A-A path gain range is -34.5 ~ 12dB **Note 1: A-A path means Analog to Analog Mixer path 3 Applications  USB/Type C Headset  USB/Type C Headphone  USB/Type C ANC Headphone/Headset  VoIP Headset  Tablet/Notebook/PCs Docking  Android Phone/Slate Docking  USB/Type C Speaker  USB/Type C Microphone Page 5 / 13 www.cmedia.com.tw Rev.1.0 Copyright© C-Media Electronics Inc.

4 Pin Assignment 4.1 CM6642 Pin-out Diagram (QFN48) CM6642 USB 2.0 High-Speed Audio Codec CPP2 CPN2 CPVEE GPIO[5]/JD0 GPIO[6]/SPDIF_OUT GPIO[7] GPIO[8] GPIO[9]/LED I2C_SDAT I2C_SCLK 39 40 41 42 43 44 45 46 47 48 1 N P C 1 P P C D D V P C P P V P C R _ T U O P H L _ T U O P H F E R V P C 2 S A I B _ C I M 1 S A I B _ C I M P A C _ C I M D D V C I M E V E E L S 2 G N I R D N G A 8 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 3 9 2 8 2 7 2 6 2 5 2 CM6642 1 2 3 4 5 6 7 8 9 0 1 1 1 2 1 3 1 4 1 C N C N C N C N C N D D V S 2 1 V D P D M D S U B V F E R 3 V 3 D ] 0 [ L A _ O I P G N W D P _ C E D O C / ] 1 [ L A _ O I P G 24 23 22 21 20 19 18 17 16 15 VREF AVDD LINE_R LINE_L DACREF SPI-WP/GPIO[0] SPI-MOSI/GPIO[2] SPI-MISO/GPIO[1] SPI-SCK/GPIO[3] SPI-CS#/GPIO[4] Page 6 / 13 www.cmedia.com.tw Rev.1.0 Copyright© C-Media Electronics Inc.

CM6642 USB 2.0 High-Speed Audio Codec USB2.0 BUS Interface Description USB 2.0 data positive (USB D+ signal). USB 2.0 data negative (USB D- signal). External Reference. Requires 1% precision 6.25k/6.2k resistor to ground Power/Ground VDD for companion digital IO power Regulated 1.2V output for core power 3.3V power output from integrated VBUS-to-3.3V regulator and I/O interface USB bus 5.0V power input for integrated multiple regulators. This power pin can accept 3.3V of USB power input for 3.3V system Analog power Charge Pump Positive Voltage Output Charge Pump Voltage Input Charge Pump Negative Voltage Output Microphone bias power Analog Ground. Analog I/O reference voltage Analog I/O reference voltage DAC/ADC reference voltage Charge pump Bucket Capacitor Charge pump Bucket Capacitor Charge pump Bucket Capacitor Charge pump Bucket Capacitor Analog Audio Interface Line input left channel Line input right channel Combo jack microphone input Combo jack microphone input Headphone output Right channel Headphone output Left channel MIC BIAS Voltage output MIC BIAS Voltage output Microphone input reference voltage GPIO/SPI/SPDIF Interface General purpose input and output; operates even in USB suspend mode General purpose input and output; operates even in USB suspend mode SPI serial flash write protected/General purpose input and output Serial data out from external flash/General purpose input and output Serial data in to external flash/General purpose input and output Clock signal to external flash/General purpose input and output Chip select to external flash/General purpose input and output Serial data receive/General purpose input and output/Jack detection Serial data transmit/General purpose input and output/SPDIF-Out General purpose input and output General purpose input and output General purpose input and output/LED controller 2-Wire Serial Bus (I2C) I2C Bus Data Pin I2C Bus Clock to Host 4.2 Pin Description Pin # Symbol USB_DP USB_DM REF VDD DV12S D3V3 VBUS AVDD CPVPP CPVDD CPVEE MICVDD AGND VREF CPVREF DACREF CPN1 CPP1 CPN2 CPP2 LINE_L LINE_R SLEEVE RING2 HP OUT_R HP OUT_L MIC_BIAS1 MIC_BIAS2 MIC_CAP GPIO_AL[0] /IRQ GPIO_AL[1] /Codec_PWDN SPI-WP#/GPIO[0] SPI-MISO/GPIO[1] SPI-MOSI/GPIO[2] SPI-SCK/GPIO[3] SPI-CS#/GPIO[4] GPIO[5]/JD0 GPIO [6] /SPDIF_OUT GPIO[7] GPIO[8] GPIO[9]/LED I2C_SDAT I2C_SCLK 10 11 13 1 9 14 12 23 35 36 41 29 25 24 32 20 38 37 40 39 21 22 26 27 34 33 30 31 28 8 7 19 17 18 16 15 42 43 44 45 46 47 48 I/O AIO AIO GND AO AO AO AI AO AO AO AO AO GND AO AO AO AO AO AO AO AI AI AI AI AO AO AO AO AI DIO DIO DIO DIO DIO DIO DIO DIO DIO DIO DIO DIO DIO DIO Page 7 / 13 www.cmedia.com.tw Rev.1.0 Copyright© C-Media Electronics Inc.

5 Electrical Characteristics 5.1 Absolute Maximum Ratings CM6642 USB 2.0 High-Speed Audio Codec Parameter Power Supplies Digital Power Ambient Operating Temperature Storage Temperature - All Pins Table. Absolute Maximum Ratings Symbol Minimum Typical Maximum Units VBus Ta Ts -0.3 0 -40 5.0 - - 5.5 +70 +125 V oC oC ESD (Electrostatic Discharge) Susceptibility Voltage Pass 3500V 5.2 Recommended Operation Condition Table. Operation Condition Symbol VBus Description Supply Voltage Min. 4.75 Typ. 5 Max. 5.25 Unit V 5.3 DC Characteristics Table. DC Characteristics Symbol V IH V IL V OH V OL I OH I OL Description Input Voltage High Input Voltage Low Output Voltage High Output Voltage Low Output Current High Output Current Low Min. 2 -0.5 2.4 - - - Typ. Max. Unit - - - - - - 3.3 0.8 - 0.4 4 4 V V V V mA mA Units MHz ns ns ns (%) ns (%) 5.4 SPDIF Output Timing Table 1. SPDIF Output Timing Parameter Symbol Minimum Typical Maximum SPDIF-OUT Frequency SPDIF-OUT Period SPDIF-OUT Jitter SPDIF-OUT High Level Width SPDIF-OUT Low Level Width - Tcycle Tjitter THigh TLow - - - 3.072 325.6 - - - 4 156.2 (48%) 162.8 (50%) 169.2 (52%) 156.2 (48%) 162.8 (50%) 169.2 (52%) Page 8 / 13 www.cmedia.com.tw Rev.1.0 Copyright© C-Media Electronics Inc.

资料库

CM6642 192KHz usb免驱声卡资料.pdf

相关推荐

音视频

热门标签

最新资料