Click to expand full text
SiS5596 Pentium PCI Chipset
1. Overview
SiS5596
PCI, Memory & VGA Controller
SiS5513
PCI System I/O
The SiS5596/5513 with built-in VGA controller is a two-chip solution for Pentium PCI/ISA system. A portion of on board DRAM is shared with the built-in VGA controller. In that way, the system cost is substantially reduced.
The SiS5596/5513 two chips solution for shared memory architecture is achieved by allowing both GUI / VGA, and System DRAM controller to control system memory. For the shared memory application, the chipset always acts as the arbiter of memory bus masters. Whenever the GUI wants to access the memory bus, it requests the memory bus from the chipset first. The chipset grants the memory bus to the GUI, only if the memory bus is not needed by the chipset.
SiS5596 Datasheet
