Altera NCO MegaCore Function - Manual (Page 26)

Parameter Value Description
Real Output
Frequency
— Displays the calculated value of the real output
frequency.
Related Information
• Frequency Modulation on page 3-7
• Phase Modulation on page 3-7
Optional Ports Parameters
Table 3-5: Optional Ports Parameters
Parameter Value Description
Frequency
Modulation input
On or Off You can optionally enable the frequency modulation
input.
Modulator
Resolution
4 to 64, Select the modulator resolution for the frequency
modulation input.
Modulator Pipeline
Level
1, 2, Select the modulator pipeline level for the frequency
modulation input.
Phase Modulation
Input
On or Off You can optionally enable the phase modulation input.
Modulator
Precision
4 to 32, Select the modulator precision for the phase
modulation input.
Modulator Pipeline
Level
1, 2, Select the modulator pipeline level for the phase
modulation input.
NCO IP Core Interfaces and Signals
The NCO MegaCore function is an Avalon-ST source and does not support backpressure.The Avalon-
MM interface allows you to control frequency hopping at run time.
Related Information
Avalon Interface Specifications
For more information about the Avalon-MM and Avalon-ST interfaces including integration with other
Avalon-ST components which may support backpressure
Avalon-ST Interfaces in DSP IP Cores
Avalon-ST interfaces define a standard, flexible, and modular protocol for data transfers from a source
interface to a sink interface.
The input interface is an Avalon-ST sink and the output interface is an Avalon-ST source. The Avalon-ST
interface supports packet transfers with packets interleaved across multiple channels.
Avalon-ST interface signals can describe traditional streaming interfaces supporting a single stream of
data without knowledge of channels or packet boundaries. Such interfaces typically contain data, ready,
UG-NCO
2014.12.15
Optional Ports Parameters 3-9
NCO IP Core Functional Description Altera Corporation
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