Related Manuals for AMS AS3933
Summary of Contents for AMS AS3933
- Page 1 Demo Kit Manual DN[Document ID] AS3933 Standard Board AS3933 DEV SYSTEM ams Demo Kit Manual, Confidential Page 1 [v1-02] 2014-Jul-11 Document Feedback...
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Page 2: Table Of Contents
Description of the GUI of the Transmitter ................12 4.3.1 Duration of the Carrier Burst ....................12 4.3.2 Number of Preamble Symbols ................... 12 4.3.3 Symbol Rate ........................12 ams Demo Kit Manual, Confidential Page 2 [v1-02] 2014-Jul-11 Document Feedback... - Page 3 Manchester Pattern Length ....................13 4.3.7 Correlator ........................... 13 Schematics, Layers and BOM ................... 14 AS3933 Demoboard Schematic ..................14 AS3933 Demoboard Layout ....................15 AS3933 Demoboard BOM ....................16 125 kHz Wake-up Transmitter Board Schematics ............. 17 125 kHz Wake-up Transmitter Board Layout ..............17 125 kHz Wake-up Transmitter Board BOM ...............
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Page 4: Introduction
AS3933 Standard Board Introduction With the AS3933 Demoboard it is possible to demonstrate the chip’s features as described in the AS3933 datasheet. The 125kHz Wake-up Transmitter Board is included to offer the user a complete system for evaluation purposes. This application note describes the operation of the two boards and gives details on the hardware and software implemented in the demokit. - Page 5 Strongest wake-up signal received on channel 3 (Z) Figure 4: Jumper Description Jumper Name Description Info Supply The supply current of the AS3933 can be measured here. Set Current this jumper for normal operation. AS3933 specific outputs WAKE Wake Output Interrupt Data Output...
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Page 6: 125 Khz Wake-Up Transmitter Board
Ground (0V) Note: When the AS3933 Demoboard is connected to the GUI it is necessary to RESET the device by turning the AS3933 off and on via switch C. Another possibility to prepare the Demoboard for USB connection is to press buttons A and B simultaneously before connecting the USB cable. -
Page 7: Software Description
Follow the installation guide Run the GUI AS3933_EvalSW.exe Note: Before connecting the 125 kHz Wake-up Transmitter Board to the GUI press button D to stop transmitting wake-up patterns. ams Demo Kit Manual, Confidential Page 7 [v1-02] 2014-Jul-11 Document Feedback... -
Page 8: Description Of The Gui Of The Receiver
Preset Default. All configurations that are set by the GUI correspond to the Register Map of the AS3933. The Register Map can be viewed via View/Register Map (Ctrl+M). All registers can be updated manually via File/Readout Registers (Ctrl+R) or the update of the registers is done automatically via File/Automatic Update (Ctrl+U). -
Page 9: Clock Generator
The RC oscillator can be calibrated via the microcontroller or the LC antenna. 4.2.5 Antenna Damper The antenna can be damped in order to limit the range. Therefore a resistor inside the AS3933 is switched into parallel to the antenna. The value of the resistor can be selected between 1kΩ to 27kΩ. -
Page 10: General Settings
Enable Correlator: If the Correlator is enabled the chip searches first for the preamble bits and then for data pattern (Manchester encoded wake-up pattern). Should the pattern correlation be disabled, the AS3933 goes directly into the data receiving mode. ... -
Page 11: Symbol Rate
The internal capacitor bank can be changed on each channel between 0pF and 32pF in order to tune the antenna to the desired resonance frequency. The AS3933 Demoboard provides a switch to tune the antenna automatically to 125 kHz. The internal capacitor bank is changed until the resonance frequency of 125 kHz is achieved. -
Page 12: Description Of The Gui Of The Transmitter
4.3.3 Symbol Rate The symbol rate can be adjusted between 512 Symbols/s and 4096 Symbols/s. The symbol rate must be the same as at the settings made with the AS3933 Demoboard. 4.3.4 Enable Buzzer The transmitter board sends out a tone whenever a packet is transmitted. This tone can be disabled here. -
Page 13: Wakeup Pattern (Manchester)
Note: It is important to note that the symbol rate, wake-up pattern, pattern length, and the Correlator have the same settings at the AS3933 Demoboard and the 125kHz Wake-up Transmitter Board. Otherwise the demoboard will not recognize the signal that is transmitted by the 125 kHz Wake-up Transmitter Board. If something does not work, restore the default settings at the demoboard and transmitter board. -
Page 14: As3933 Demoboard Layout
AS3933 Standard Board AS3933 Demoboard Layout Figure 10: AS3933 Demoboard Layout –Top Layer Figure 11:AS3933 Demoboard Layout – Bottom Layer ams Demo Kit Manual, Confidential Page 14 [v1-02] 2014-Jul-11 Document Feedback... -
Page 15: As3933 Demoboard Bom
AS3933 Standard Board AS3933 Demoboard BOM ams Demo Kit Manual, Confidential Page 15 [v1-02] 2014-Jul-11 Document Feedback... -
Page 16: 125 Khz Wake-Up Transmitter Board Schematics
Sheet 125 kHz Wake-up Transmitter Board Layout Figure 12: 125 kHz Wake-up Transmitter Board Layout – Top Layer Figure 13: 125 kHz Wake-up Transmitter Board Layout – Bottom Layer ams Demo Kit Manual, Confidential Page 16 [v1-02] 2014-Jul-11 Document Feedback... -
Page 17: 125 Khz Wake-Up Transmitter Board Bom
AS3933 Standard Board 125 kHz Wake-up Transmitter Board BOM ams Demo Kit Manual, Confidential Page 17 [v1-02] 2014-Jul-11 Document Feedback... -
Page 18: Ordering & Contact Information
AS3933 Standard Board Ordering & Contact Information Ordering Code Description AS3933 DEV SYSTEM AS3933 Demo Kit Standard Board Buy our products or get free samples online at: www.ams.com/ICdirect Technical Support is available at: www.ams.com/Technical-Support Provide feedback about this document at: www.ams.com/Document-Feedback... -
Page 19: Copyrights & Disclaimer
AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. -
Page 20: Revision Information
Page 1-01 Update to corporate format (2013-Feb-24) 1-02 Update to corporate format 1-20 Note: Page numbers for the previous version may differ from page numbers in the current revision. ams Demo Kit Manual, Confidential Page 20 [v1-02] 2014-Jul-11 Document Feedback...
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