Wireless Module (DWM)

Info Box Applies to DWM

Contents

IntroductionEdit

Wireless Module (DWM) is one of DAVE's Add-On Modules. These devices are conceived and designed to be easily included in embedded system, in order to ease the use from the system integrator's standpoint, in terms of hardware issues and software compatibility. These characteristics make them suitable for use in combination with a wide range of host devices, from low-cost microcontrollers to high-end embedded processors.

DWM belongs to the Connectivity Modules subfamily and provides support for WiFi (802.11 b/g/n) and Bluetooth (2.1 + EDR) throgh, respectively, a SDIO interface and a UART interface.

SpecificationEdit

The module is built around a LS Research TiWi-R2 Integrated Transceiver Modules for WLAN 802.11 b/g/n and Bluetooth. The module realizes 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.

FeaturesEdit

• IEEE 802.11 b,g,n,d,e,i, compliant
• Bluetooth 2.1+EDR, Power Class 1.5
• Reduced footprint: 25 mm x 38 mm
• Low height profile
• U.FL connector for external antenna
• Integrated band-pass filter
• Industrial operating temperature range: -40 / +85 °C

Interface timingsEdit

Please refer to the TiWi-R2 Datasheet for SDIO [WiFi] and UART [Bluetooth] interface timings.

Power consumptionEdit

ResetEdit

Operating modesEdit

Pinout and detailed pin functionsEdit

DWM can be connected to the host board through the J1 connector. The following table reports the connector pinout:

Pin number	Name	Type	Description	Voltage	Note
1	BT_EN	Input	Bluetooth Enable	3.3V
2	WIFI_EN	Input	WLAN Enable	3.3V
3	UART2_RTSn	Output	Bluetooth HCI UART RTS	3.3V
4	WIFI_IRQ	Output	WLAN Interrupt Request	3.3V
5	UART2_TXD	Input/Output	Bluetooth HCI UART TX	3.3V
6	BT_F2	Output	Bluetooth Wakeup / DC2DC Mode	3.3V
7	UART2_CTSn	Input	Bluetooth HCI UART CTS	3.3V
8	WIFI_CLK_REQ(A)	Output	HOST_WakeUp	3.3V
9	UART2_RXD	Input	Bluetooth HCI UART RX	3.3V
10	NC		Reserved for future use	-	Please leave unconnected.
11	DGND		Ground	-
12	NC		Reserved for future use	-	Please leave unconnected.
13	DAT3	Input/Output	SDIO Data Bit 3	3.3V
14	NC		Reserved for future use	-	Please leave unconnected.
15	DAT2	Input/Output	SDIO Data Bit 2	3.3V
16	NC		Reserved for future use	-	Please leave unconnected.
17	DAT1	Input/Output	SDIO Data Bit 1	3.3V
18	NC		Reserved for future use	-	Please leave unconnected.
19	DAT0	Input/Output	SDIO Data Bit 0	3.3V
20	NC		Reserved for future use	-	Please leave unconnected.
21	DGND		Ground	-
22	DGND		Ground	-
23	SDO_CMD	Input/Output	SDIO Command Line	3.3V
24	SDO_CLK	Input	SDIO Clock	3.3V
25	DGND		Ground	-
26	DGND		Ground	-
27	3.3V	Power Input	+3.3V Input Voltage	3.3V
28	3.3V	Power Input	+3.3V Input Voltage	3.3V
29	5V	Power Input	+5V Input Voltage	5V
30	5V	Power Input	+5V Input Voltage	5V

Pinout referenceEdit

The following picture shows the reference pins of the J1 connector:

Integration guideEdit

This section provides useful information and resources that allow the system designer to integrate DWM module in his/her application very quickly.

Typical scenariosEdit

The following pictures shows conceptual block diagram of application where the role of the host is played by an Embedded PC.

File:File:Dwm-epc-scenario.png

Mechanical informationEdit

The following image shows the module dimensions:

DWM dimensions

• DXF: http://www.dave.eu/download/restricted/add-on-modules/dwm/CS061412.dxf

LayoutEdit

The following images show the module layout:

DWM Top View

DWM Bottom View

The component view (top and bottom) is avalable as PDF file:

• PDF: http://www.dave.eu/download/restricted/add-on-modules/dwm/CS061412_component_view.pdf

3DEdit

• IDF (3D): http://www.dave.eu/download/restricted/add-on-modules/dwm/CS061412-3D.zip

Qualification testsEdit