SWRU437B September   2015  – June 2020 WL1801MOD , WL1805MOD , WL1807MOD , WL1831MOD , WL1835MOD , WL1837MOD

 

  1.   WiLink Module Hardware Integration Guide
    1.     Trademarks
    2. 1  Module Variant Table
      1. 1.1 WiLink WLAN Antenna Configuration
        1. 1.1.1 Single-Input Single-Output (SISO)
        2. 1.1.2 Multiple-Input Multiple-Output (MIMO)/Maximum Ratio Combining (MRC)
    3. 2  Critical Connections
    4. 3  Power Supply
      1. 3.1 Power Up/Shutdown Sequence
        1. 3.1.1 Power Up
        2. 3.1.2 Shutdown
      2. 3.2 Power Sequencing
    5. 4  Clocks
      1. 4.1 Slow Clock
      2. 4.2 Fast Clock
    6. 5  Current Consumption
      1. 5.1 Performance Parameters - Typical
    7. 6  Antenna
    8. 7  Ground Connections
    9. 8  Layout
    10. 9  Hardware Troubleshoot
      1. 9.1 System Requirements
      2. 9.2 Power Rails
      3. 9.3 Critcal Supplies
      4. 9.4 Sense on Reset
      5. 9.5 WLAN
        1. 9.5.1 WLAN Host Interface (SDIO)
        2. 9.5.2 WLAN IRQ Operation (SDIO Out-of-Band Interrupt)
      6. 9.6 Bluetooth and Bluetooth Low Energy
        1. 9.6.1 Bluetooth UART HCI Interface
        2. 9.6.2 Bluetooth PCM
      7. 9.7 Reserved Pins
      8. 9.8 Debug
    11. 10 WiFi_Zigbee Coex
    12. 11 References
  2.   Revision History

3.1.2 Shutdown

Shutdown

  1. Ensure the supplies to the device (VBAT, VIO, and slow clock) are stable and available.
  2. De-assert BT_EN and WL_EN.
  3. De-assert the supplies to the chip (VBAT and VIO)
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