Instructions

Using the Internal Oscillator in MAX II and MAX V Devices
The internal oscillator has a single input, oscena, and a single output, osc. To
activate the internal oscillator, use oscena. When activated, a clock with the
frequency is made available at the output. If oscena is driven low, the output of the
internal oscillator is a constant high.
To instantiate the internal oscillator, follow these steps:
1. On the Tools menu of the Intel Quartus Prime software, click IP Catalog.
2. Under the Library category, expand the Basic Functions and I/O.
3. Select MAX II/MAX V oscillator and after clicking Add, the IP Parameter Editor
appears. You can now select the oscillator output frequency.
4. In Simulation Libraries, the model files that must be included are listed. Click
Next.
5. Select the files to be created. Click Finish.
The selected files are created and can be accessed from the output file folder. After
the instantiation code is added to the file, the oscena input must be made as a wire
and assigned as a logic value of “1” to enable the oscillator.
Using the Internal Oscillator in All Supported Devices (except MAX
II and MAX V devices)
The internal oscillator has a single input, oscena, and a single output, osc. To
activate the internal oscillator, use oscena. When activated, a clock with the
frequency is made available at the output. If oscena is driven low, the output of the
internal oscillator is a constant low.
To instantiate the internal oscillator, follow these steps:
1. On the Tools menu of the Intel Quartus Prime software, click IP Catalog.
2. Under the Library category, expand the Basic Functions and Configuration
Programming.
3. Select Internal Oscillator (or Intel FPGA S10 Configuration Clock for Intel
Stratix 10 devices) and after clicking Add, the IP Parameter Editor appears.
4. In the New IP Instance dialog box:
— Set the top-level name of your IP.
— Select the Device family.
— Select the Device.
5. Click OK.
6. To generate the HDL, click Generate HDL.
7. Click Generate.
(5)
Not applicable to Intel Stratix 10 devices.
Using the Internal Oscillator IP Core
683653 | 2017.11.06
AN 496: Using the Internal Oscillator IP Core
Send Feedback
6