Altera Module Library

Note:

• This section contains functions written in AHDL - the Altera proprietary HDL language.

• The source files for functions #1 to #16 can be found at the download page. Follow the link at the bottom of this page.

• Functions #17 to #28 are provided as .zip files with included documentation (if provided).

Contributed by:	Module Description
#1: Rune Baeverrud	Divide By N Frequency Divider This cascadeable function divides a frequency by any integer number and is used for timing generation in other modules, e.g. the Compact UART Reference Design or the I2C Controller Reference Design.
#2: Rune Baeverrud	Compact UART, Transmitter Module The Compact UART transmitter provides a fully functional asynchronous serial transmitter. Interfacing to logic or a microprocessor is easily accomplished using the control and status signals provided.
#3: Rune Baeverrud	Compact UART, Receiver Module The Compact UART receiver provides a fully functional asynchronous serial receiver. Interfacing to logic or a microprocessor is easily accomplished using the control and status signals provided.
#4: Rune Baeverrud	Compact UART Reference Design A complete UART with microprocessor interface. Just drop it in and off you go.
#5: Rune Baeverrud	I2C Controller This is an I2C Controller which may be used as a controller in single master systems. Interfacing to logic or a microprocessor is easily accomplished using the control and status signals provided.
#6: Rune Baeverrud	I2C Controller Reference Design A complete I2C Controller with microprocessor interface. Just drop it in and off you go.
#7: Woody Johnson	Gray Code Counter The gray module implements a parameterized width gray code sequence counter. Gray code count sequences are distinguished by the fact that only one bit changes as the counter goes through it's sequence.
#8: Rune Baeverrud	512-point Cosine This is a 512 points (128 points / quadrant) cosine function using a single 256 point lookup-table (one EAB). 7 bits + sign bipolar or 8 bit unipolar output resolution, giving a Signal-to-Noise Ratio (SNR) of more than 50dB.
#9: Rune Baeverrud	512-point Sine This is a 512 points (128 points / quadrant) sine function using a single 256 point lookup-table (one EAB). 7 bits + sign bipolar or 8 bit unipolar output resolution, giving a Signal-to-Noise Ratio (SNR) of more than 50dB.
#10: Rune Baeverrud	Numerically Controlled Oscillator/Modulator This is a very high speed Numerically Controlled Oscillator/Modulator achieving an operating speed of more than 80MHz input clock frequency using an Altera FLEX 10K -3 device.
#11: Rune Baeverrud	VGA Sync Generator This module makes it very easy to generate the signals required for output to an industry standard VGA computer screen. A number of status output signals are provided for easy synchronizing to external pixel data.
#12: Woody Johnson	MII Management Interface Controller This is a design that can be used to read or write a register value as defined by the IEEE 802.3 MII Management Interface.
#13: Iain Rankin	Corner Bender This LPM function was developed to permit the most efficient separation of the component bitplanes in an image for display on a fast binary array modulator, using pulse width modulation
#14: Frank Rodler	Dynamic RAM Controller Dynamic RAMs are still the cheapest way to implement memory for microprocessor systems. If there is a CPLD already planed in the new design, the DRAM controller can be easily added to the device.
#15: Woody Johnson	Linear Feedback Shift Register (LFSR) This is a design that can be used to implement a linear feedback shift register (LFSR) of various lengths.  Such registers are useful for replacing counters when the count sequence is unimportant (such as in implementing fifo head and tail pointers) or were only the terminal count value is used.
#16: Rune Baeverrud	Variable Frequency Divider This function is similar to the div_by_n function also found in the FreeCore Library. The difference is that while div_by_n divides a frequency by a fixed value provided as a parameter, var_div will divide a frequency by a variable value provided at it's D[] input
#17: Steven Groom	Percentage Module, outputs A*100/B
#18: Steven Groom	Improved UART
#19: Keith Willis	Fully Programmable UART, version 1.1
#20: Nik Snoek	PRBS module
#21: Peter Szymansky	Byte Wide CRC32 Generator/Detector
#22: Steven Groom	Bit Serial Multiplier
#23: Steven Groom	Arithmetic Logic Unit
#24: Steven Groom	Sine/Cosine using the CORDIC algorithm
#25: Sven Zeisberg	Generating Sine/Cosine using integrators
#26: Steven Groom	Sequential multiplier using Booth's Algorithm
#27: Steven Groom	Very fast exp(i), Sine/Cosine
#28: pealed@ phasemetrics.com	Parameterized variable length pipeline

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Last updated 28 Jul 1999 07:22