Need a programmable frequency generator

You may use a PWM or TCPWM component. You are free to program period and duty cycle of the outcoming signal.

Bob

for example(no PSoC4):

DDS24: 24-bit DDS arbitrary frequency generator component

USB / PSoC 3 pulse generator project and source code
Simple Percussion generator

t.saha,

you can use DDS32 frequency generator with P4 to obtain output with 32-bit accuracy. Old thread on that is here

Re: How can I handle a PSoC 5 community library DDS24 on PSoC 4 BLE device ? 

The the DDS32 component has no datasheet available, you can refer to the somewhat similar DDS24 component:

DDS24: 24-bit DDS arbitrary frequency generator component

Attached below is a basic DDS32 demo and DDS32 libtary (to install: Project->Dependency->Add library...)

/odissey1