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C-Media CM6648 User Manual

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C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People's Heart! 6F, NO.100, Sec.4, Civil Boulevard,
Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211
CM6648_Demo Board
User Manual
Version：V1.0
CM6648
Demo Board User Manual
頁 1

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Summary of Contents for C-Media CM6648

  • Page 1 Demo Board User Manual CM6648_Demo Board User Manual Version：V1.0 C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 1 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...

  • Page 2: Revision Notes

    Revision Notes Revision Date Description V1.0 2023/06/19 First release. C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 2 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...
  • Page 3 C-Media, the C-Media Logo, Xear 3D, Xear 3D Logo, Speaker Shifter, Smart Jack, and Smart Audio Jack, Middleware are trademarks of C-Media Electronics Inc. in Republic of China and/or other countries. All other brands and product names listed are registered trademarks of their respective holders and are hereby recognized as such.

  • Page 4: Revision History

    2. Demo Board Contents………………………………………………………………....6 3. Pin Header Description……………………………………………….…………………….…8 4. Default Installed Jumper…….……………………………………………………..…………12 C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 4 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...
  • Page 5 Demo Board User Manual 1. Overview The CM6648 is a highly-integrated USB audio solution which is specifically designed for high-end USB type-C headset/headphone and other USB-to-3.5mm jack audio application. The CM6648 mainly combines USB 2.0/ADC 3.0 digital audio interface, and stereo Hi-Fi quality headphone amplifiers. The CM6648 features a stereo low power cap-free Class-G headphone amplifier with highly SNR and THD+N performance, providing longer battery life and Hi-Fi listening experience.
  • Page 6 CM6648 Demo Board User Manual 2. Demo Board Contents C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 6 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...
  • Page 7 SW10: Microphone mute key SW11: Headphone output mute key C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 7 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...
  • Page 8 J13 Output power for MICVDD  D1 LED indicator light for USB5V power C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 8 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...
  • Page 9  J32 FLASH_CS: Shorted J32 to enter into ROM code C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 9 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...
  • Page 10 Both are for testing purpose only.  I2C pin header with 2.2K pull up. C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 10 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...
  • Page 11  J9/J14 VDD_IO: Digital power CPVDD: Charge pump power C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 11 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...
  • Page 12 Default installed jumper to keep demo board function work properly.  J27/28/J29/J30 pin1,pin2.  J29 pin2,pin3  J4/J8/J9/J14/J33 C-MEDIA ELECTRONICS INC. │ 驊訊電子企業股份有限公司 │ Worldwide Solutions That Touch People’s Heart! 6F, NO.100, Sec.4, Civil Boulevard, 頁 12 Taipei, Taiwan 106, R.O.C. │ 106 台北市市民大道四段100號6樓 │ TEL: 886-2-87731100 FAX: 886-2-87732211...