CDK host computer configuration NCK2911 dual-channel reception

I. Overview

       As a dual-channel UHF receiver, NCK2911 is often used in PEPS systems to receive data that can be sent in the UHF band. NXP has specially developed a CDK host computer to transform complicated parameter configurations into visualization options to facilitate user development.

       In the early stage of development, FTDI can be used as a data transmission cable to connect the NCK2911 evaluation board to a personal computer (CDK installed), and configure NCK2911 through CDK for data reception.

       After finally passing the test, export the configuration parameters (SPI data frame), replace the CDK with the MCU, and perform the configuration and data reception of NCK2911. The exported data frame is shown in the figure below. For specific parameter descriptions, please refer to UM706110-NCK2911 RCI Operation Manual (1.0). pdf document.

       This article will share with you how to configure NCK2911 for dual-channel reception through the CDK host computer.

2. Hardware preparation

       CDK configuration NCK2911 requires one PC (CDK installed), one FTDI Cable, and one NCK2911 high-frequency receiving board.

       For subsequent verification, the author prepared two key boards, which burned software with different parameters, for the verification of dual-channel reception.


 

3. CDK configuration

       After connecting NCK2911 to the PC via the FTDI cable, turn on the CDK host computer, as shown in the figure below, click “Rescan” to refresh, you can see the connected device, and double-click to enter the configuration interface.

1. Select the "Advanced” option to configure the options.
   
2. Taking the configuration of the local frequency of the local oscillator as an example, as shown in the figure below, RKE(0) is configuration 1, PKE(1) is configuration 2, and other configuration options are similar.
   

          It should be noted that RKE(0) and PKE(1) are only named for the configuration, and users can name them according to the specific implemented functions.

          The user configures the corresponding option parameters according to the data that the two channels need to receive. The parameter selection of each configuration option will not be expanded here. The specific configuration needs to be based on the key communication protocol formulated by the user, that is, it needs to correspond to the parameter settings of the key software before the corresponding data frame can be received.

3. The following points need to be noted in the configuration. Incorrect configuration will cause it to not be received normally.

4. In continuous reception, RKE(0) is used as the configuration of channel A, and PKE(1) is used as the configuration of channel B；
   

          Then click the green button at the receiving place to configure and start receiving data；

          Press the key button to receive the corresponding data frame, as shown in the figure below：

          The software parameter settings of the two keys A and B (local oscillator frequency, intermediate oscillator frequency, etc.) correspond to the configuration of RKE(0) and PKE(1). When the corresponding channel is opened or closed, press the key button to determine whether the corresponding data frame has been received. Whether the channel is successfully configured and opened.

          During the debugging process, you can refer to the following ideas. First, only channel A is turned on to configure RKE(0) for reception, and the keys A and B are pressed separately to verify whether only the key A data frame is received, so as to determine whether the key A corresponds to the RKE(0) configuration, and the key B corresponds to the PKE(0).) The same is true for verification.

          After the single-channel configuration corresponds to the key software one by one, the dual-channel is turned on for reception to verify whether the data frames of the two keys can be received. The data frames are related to the key communication protocol. No explanation will be given here.

Fourth, the conclusion

       The above is all the content of this article, everyone is welcome to communicate in the comments area.

V. Reference materials

1. UM706110-NCK2911 RCI Operation Manual(1.0). pdf
2. an454912 - Application Note - AN-SCA 1715 Advanced Receiver Configuration (1.2). pdf
3. NCK2910 CDK Basic Configuration_Larry He_20201010. pdf