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

1 Module Variant Table

Table 1. WL18XXMODGB (2.4 GHz only module variants)

Device Reduced integration interfaces Compared to the Main 1835 Module WLAN
2.4-GHz SISO		 WLAN 2.4-GHz
MIMO		 WLAN
2.4-GHz MRC		 Bluetooth
WL1835MOD • Full version (all of the integration checklist must be applied) ✓ ✓ ✓ ✓
WL1831MOD • Only the main RF antenna, ANT1 is used and the second one should be left N.C. ✓ ✓
WL1805MOD • For Bluetooth IP removal. Bluetooth EN line must be connected to VSS. Bluetooth HCI, PCM and logger lines should be left N.C. ✓ ✓ ✓
WL1801MOD • Only the main RF antenna, ANT1, is used and the second one should be left N.C. ✓
• For Bluetooth IP removal. Bluetooth EN line must be connected to VSS. Bluetooth HCI, PCM and logger lines should be left N.C.

Table 2. WL18X7MODGI (2.4 GHz and 5 GHz modules)

Device Redundant Capabilities Compared to the Main 1837 Module WLAN
2.4-GHz SISO (1) 		WLAN
2.4-GHz MIMO (2) 		WLAN
2.4-GHz MRC (3) 		Bluetooth WLAN
5-GHz SISO
WL1837MOD • Full version (all of the integration checklist must be applied) ✓ ✓ ✓ ✓ ✓
WL1807MOD • For Bluetooth IP removal: Bluetooth EN line must be connected to VSS. Bluetooth HCI, PCM and logger lines should be left N.C. ✓ ✓ ✓ ✓
  1. Single input, single output (SISO)
  2. Multiple input, multiple output (MIMO)
  3. Maximum ratio combining (MRC)

NOTE

Customers working with WL1837MOD/WL1807MOD modules that require only the single antenna solution (2.4 Ghz WLAN SISO/ Bluetooth/ 5 GHz single antenna), while reusing the original certification, can do so by making sure that no RF comes out of the second antenna port (2.4 MIMO only / 5 Ghz diversity). To do this, use the following requirements:

  • Leave the second module RF port open ( pin number 18 = N.C.)
  • In the WL1837MOD INI, make sure that only 1 antenna is selected for 2.4 GHz by setting parameter NumberOfAssembledAnt2_4 = 1;