Title :
100 Mpixel/sec single-chip integrated graphics controller (IGC)
Author :
Mansharamani, D. ; Birman, M. ; Chu, G. ; Martinella, J. ; Wu, D. ; Chiou, J. ; Wallis, B. ; Samuels, A. ; Grewal, H. ; McLeod, J. ; Zhu, M. ; Evans, K. ; Goodin, K.
Author_Institution :
Weitek Corp., Sunnyvale, CA, USA
Abstract :
The IGC, a single-chip 2-D raster graphics engine for 1-2-Mpixel, 8-bit pseudorealistic color desktop systems, is described. With on-chip controllers for video, RAMDAC, and interleaved VRAMs, together with dedicated hardware for scan-conversion, image and block transfers, clipping, and raster operations, the 185 K transistor, 208-pin custom IC operates at 25 MHz at full 1-Mbit VRAM bandwidth of 100 Mpixel/s. The IGC eliminates the performance bottleneck of workstations and personal computers by performing graphics functions at the maximum bandwidth of the interleaved pixmap with a minimum amount of support hardware
Keywords :
application specific integrated circuits; computer graphic equipment; microprocessor chips; satellite computers; 1 Mbit; 1 to 2 Mpixel; 25 MHz; 8 bit; IGC; RAMDAC; clipping; dedicated hardware; image and block transfers; interleaved VRAMs; interleaved pixmap; maximum bandwidth; on-chip controllers; performance bottleneck elimination; personal computers; pseudorealistic color desktop systems; raster graphics engine; raster operations; scan-conversion; single-chip integrated graphics controller; video controllers; workstations; Computer graphics; Computerized monitoring; Engines; Hardware; Image resolution; Memory management; Pipelines; Pixel; Testing; User interfaces;
Conference_Titel :
Custom Integrated Circuits Conference, 1991., Proceedings of the IEEE 1991
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0015-7
DOI :
10.1109/CICC.1991.164136
