Color Space Convertor
Features
- Supports FLEX® 10KE, ACEX® 1K and APEX™ 20KE devices
- Computer R'G'B' to Y'CrCb color space conversion
- Continuous one symbol per clock cycle processing capability
- 8-bit inputs, 8-bit outputs, 10-bit coefficients and 13-bit internal arithmetic precision
- High clock speed
- Low gate count
- Low latency (5 cycles)
- Fully synchronous, without internal tri-states, with asynchronous reset and clock enable
- Available in VHDL
Block Diagram
Description
Color space conversion is often necessary when transferring data between devices that use different color space models. For example, to transfer a television image to a digital computer image the data must undergo Y'CrCb to R'G'B' conversion. The color space convertor (CSC) is a general core that converts from one color space to another. The CSC core converts gamma-corrected computer RGB digital values (i.e., each component is in the range of [0,255]) of each pixel to YCrCb video components.
Device Utilization & Performance
Table 1 lists the typical device utilization results for the megafunction.
| Table 1. Typical Device Utilization for the Megafunction |
| Target Device |
Speed Grade |
Utilization |
Performance
(fMAX) |
| LCs (1) |
I/O Pins (2) |
ESBs (3) |
| EPF10K30ETC144 |
-1 |
456 |
51 |
- |
85 MHz |
| EP1K10TC100 |
-1 |
456 |
51 |
- |
111 MHz |
| EP20K60ETC144 |
-1 |
415 |
51 |
- |
117 MHz |
Notes:
- LC = Logic Cells
- Assuming all core I/O is routed off-chip.
- ESB = Embedded System Blocks
Deliverables
- Encrypted Licenses
- Post-synthesis AHDL
- Assignment & Configuration File (.acf)
- Symbol File (.sym)
- Include File (.inc)
- Vectors for testing the functionality of the megafunction
- HDL Source Licenses
- VHDL source RTL
- Synthesis scripts (LeonardoSpectrum)
- Simulation scripts (ModelSim)
- Documentation (user's guide)
- Extensive HDL testbench that instantiates:
- Example design
- Input signal generator
- A set of expected results
- Design support
- Reference C source code (bit-accurate model)
Contact Information
For additional information, contact CAST. Inc. at:
CAST, Inc.
11 Stonewall Court
Woodcliff Lake, NJ 07677
USA
Phone: +1 (845) 353-6160
Fax: +1 (845) 727-7607
E-mail: OpenCore@cast-inc.com
URL: www.cast-inc.com
The Color Space Convertor megafunction is licensed from Alma Technologies S.A.
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