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CYW20706 Schematic Design Considerations - KBA222368

CYW20706 Schematic Design Considerations - KBA222368

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Translation - Japanese: CYW20706 回路設計に関する考慮事項 - KBA222368 - Community Translated (JA)

Question:

What are the CYW20706 schematic design considerations?

Answer:

  1. See the CYW920706_eval board schematic available in SDK/doc/CYW92070aWCDEVAL-Hardware-User-Guide.pdf.
  2. Power part: copy from the eval board.
  3. External crystal oscillator: CYW20706 supports 20-, 24- and 40-MHz crystals by selecting the correct crystal strapping options.
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  4. External EEPROM or Flash is needed to download the patch and application code. Connect the Sflash or EEPROM to SPI2.
  5. HCI UART can be used to download/ram boot/send HCI commands or UART application function. PUART is used for application function.
  6. F8-BT_DEV_WAKE is the pin to notify the CYW20706 that the host requires attention.
  7. F7-BT_HOST_WAKE is the pin to notify the host that CYW20706 needs attention.
  8. RF design: The band-pass filter LFB212G45CG2D013 is recommended and PI network is recommended for antenna tuning.
  9. Refer to the datasheet for pin assignment.
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