The method described in this application note uses zero CPU, it is completely done in hardware. This application note covers only the physical layer implementation of an FSK transmitter and receiver; higher-level encoding techniques and physical modem connections are not discussed.
Introduction
In some applications, it is necessary to transmit digital data through analog signals. This is often due to bandwidth limitations in the transmission medium. There are numerous methods of transmitting digital data through analog signals; this application note specifically focuses on frequency shift keying (FSK) and how to implement an FSK modulator and demodulator in PSoC 3 and PSoC 5LP.
The following table provides the list of devices, the supported Creator version, Development kit and Compiler for this application note project:
|
Project |
Device
|
PSoC Creator
Version |
Development Kit
CY8CKIT-xxx |
Compiler
|
||||||||
|
Architecture
|
Silicon
Revision |
V2.2 SP1 or higher |
V2.1 |
V2.0
|
001
DVK |
Keil
|
GCC
|
RVDS
|
MDK
|
|||
|
AN60594.zip |
Prod
|
YES
|
NO
|
NO
|
YES
|
YES*
|
NO
|
YES
|
N/A
|
N/A
|
N/A
|
|
|
Prod
|
YES
|
NO
|
NO
|
YES
|
YES*
|
NO
|
N/A
|
YES
|
YES
|
YES
|
||
| AN60594_Archive.zip |
ES3, Prod
|
NO
|
YES
|
YES
|
YES
|
YES*
|
NO
|
YES
|
N/A
|
N/A
|
N/A
|
|
|
ES1, Prod
|
NO
|
YES
|
YES
|
YES
|
YES*
|
NO
|
N/A
|
YES
|
YES
|
YES
|
||
*Refer to Migrating CY8CKIT-001 DVK project to CY8CKIT 030/ 050.
- Click on AN84741 - PSoC® 5 to PSoC 5LP Migration Guide to learn differences between PSoC 5 and PSoC 5LP.
- For PSoC 5 project and related document, please download file AN60594_Archive.zip.
Projects associated with this application note can be downloaded from the 'Related Files' section below. For your convenience, we have provided projects that are compatible with the two most recent versions of PSoC Creator:
- AN60594.zip is used with PSoC Creator 2.1 SP1
- AN60594_Archive.zip is used with PSoC Creator 2.1/2.0
The project’s default settings may not be compatible with your device or kit, and you may need to change your project settings. For more information, see:
