Difference between revisions of "DWS ADD-ON/DWS Hardware/Integration guide"
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#Atel T-AT9552 with UFL to SMA adapter:[[File:T-AT9552.jpg|none|thumb|135x135px|Atel T-AT9552]][[File:1300-00041.png|thumb|135x135px|none| UFL to SMA adapter ]] | #Atel T-AT9552 with UFL to SMA adapter:[[File:T-AT9552.jpg|none|thumb|135x135px|Atel T-AT9552]][[File:1300-00041.png|thumb|135x135px|none| UFL to SMA adapter ]] | ||
#J2 Antennas 2JF0102P patch antenna[[File:2jf0102p-01.jpg|thumb|135x135px|J2 Antennas 2JF0102P|none]] | #J2 Antennas 2JF0102P patch antenna[[File:2jf0102p-01.jpg|thumb|135x135px|J2 Antennas 2JF0102P|none]] | ||
| − | The antenna 1. is the one used by the manufacturer for the precertification tests | + | The antenna 1. is the one used by the manufacturer for the precertification tests. |
| − | The antenna 2. is the one used by DAVE for the qualification tests | + | The antenna 2. is the one used by DAVE for the qualification tests. |
| − | |||
| − | |||
| − | + | == References == | |
| − | |||
| − | |||
* [https://www.telit.com/m2m-iot-products/wifi-bluetooth-modules/wi-fi-we866c6-p/ WiFi module manufacturer Documents] | * [https://www.telit.com/m2m-iot-products/wifi-bluetooth-modules/wi-fi-we866c6-p/ WiFi module manufacturer Documents] | ||
** see the Hardware Design Guide for the antenna selection | ** see the Hardware Design Guide for the antenna selection | ||
** see the Wi-Fi and Bluetooth Network Interface Card NIC User Guide for software implementations | ** see the Wi-Fi and Bluetooth Network Interface Card NIC User Guide for software implementations | ||
[[Category:DWS]] | [[Category:DWS]] | ||
Revision as of 10:11, 19 January 2022
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|---|---|---|---|
| Version | Issue Date | Notes | |
| 1.0.0 | Jan 2022 | First version | |
Contents
Integration guide[edit | edit source]
This section provides useful information and resources that let the system designer integrate the DWS module in the application very quickly.
Typical scenario[edit | edit source]
The following picture shows the conceptual block diagram of the application where the host is an Embedded System.
Electrical guidelines[edit | edit source]
- SDIO lines
- 50ohm single ended impedance
- keep lines as short as possible
- place series resistor on the carrier for impedance matching (tipical 22ohm)
- 5V and 3.3V rails can power up in any order
- by default 5V rail is not used by the add-on
- keep WIFI_EN asserted during power-up sequence
Customizations[edit | edit source]
Many customization are potentially available for this module:
- I/O with 1.8V levels
- applies to all the interfaces (SDIO, UART, EN)
- the module can be powered by the 5V rail only
- I2S interface can be made available for BT operations
Ask more information to technical support about this topic.
Calibration process[edit | edit source]
The radio interface of the DWS module is configured by several parameters. These parameters are set in Linux user space.
Regulatory domain[edit | edit source]
For proper operation in the country where the system is deployed, the regulatory domain has to be configured. See this section for more details
MAC address[edit | edit source]
The MAC address is fused inside the module and assured to be unique
Antenna selection[edit | edit source]
The WiFi module featured inside this add-on provides some precertifications that allow the final customer to decrease the amount of test to perform to obtain the needed certification.
To be able to use these precertifications a proper antenna has to be selected. Refer to the manufacturer Hardware Design Guide, linked in the References section of this page, or contact technical support for more informations.
Tested Antennas[edit | edit source]
Following a list of tested and approved antennas:
- Atel T-AT9552 with UFL to SMA adapter:
- J2 Antennas 2JF0102P patch antenna
The antenna 1. is the one used by the manufacturer for the precertification tests.
The antenna 2. is the one used by DAVE for the qualification tests.
References[edit | edit source]
- WiFi module manufacturer Documents
- see the Hardware Design Guide for the antenna selection
- see the Wi-Fi and Bluetooth Network Interface Card NIC User Guide for software implementations
