AXEL Lite SOM/AXEL Lite Evaluation Kit/Interfaces and Connectors/DWM

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History
Version Issue Date Notes
1.0.0 Oct 2020 First DESK release


DWM[edit | edit source]

Description[edit | edit source]

J24 is a 30-pins 0.50mm Pitch SlimStack™ Receptacle. This connector is dedicated to the DWM optional add-on module.

The module is built around an LS Research TiWi-BLE Integrated Transceiver Modules for WLAN 802.11 b/g/n and Bluetooth. The module implements the necessary PHY/MAC layers to support WLAN applications in conjunction with a host processor over a SDIO interface. The module also provides a Bluetooth platform through the HCI transport layer. Both WLAN and Bluetooth share the same antenna port.

DWM connector

Signals[edit | edit source]

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
1, 2 - 5V
3, 4 - 3.3V
5, 6, 9, 10, 19 - DGND Ground
7 J10.69 TIWI_MMC2_CMD
8 J10.71 TIWI_MMC2_CLK
11 J10.61 TIWI_MMC2_DAT0
13 J10.63 TIWI_MMC2_DAT1
15 J10.65 TIWI_MMC2_DAT2
17 J10.67 TIWI_MMC2_DAT3
21 J10.47 UART2_RX Used only for BT peripheral
23 J10.55 UART2_CTS Used only for BT peripheral
24 J10.39 TIWI_BT_F5
25 J10.49 UART2_TX Used only for BT peripheral
26 J10.41 TIWI_BT_F2
27 J10.59 UART2_RTS Used only for BT peripheral
28 J10.43 TIWI_IRQ
29 J10.99 TIWI_BT_EN
30 J10.45 TIWI_EN
12, 14, 16, 18, 20, 22 - N.C. Not connected

Device mapping[edit | edit source]

The WiFi peripheral is mapped to the corresponding eth<X> device in Linux. The network peripheral is visible under the ifconfig network configuration utility.

Device usage[edit | edit source]

The peripheral is used the standard kernel interface and network protocol stack.