What is PPCI & EPCI?
As the technology changes, there are more and more functions required on a small size of CPU board. Therefore, the mechanical design is getting difficult. Base on that, Protech Systems develop the new PCI connector, name as PPCI (Protech PCI); PPCI specification defines an alternate implementation for small form factor PCI cards. This specification uses a qualified subset of the same signal protocol, and electrical definitions as the PCI specification, and concern about the mechanical design of CPU board, the PPCI connector becomes smaller, reduce the pin from 120-pin to 60-pin but still runs the same speed as PCI connector at 33MHz. The maximum amount of data exchanged between the processor and peripherals using the current PPCI design is 532 MB per second. EPCI (Extension PCI) is the next generation of PPCI connector, overcome the limitation of PPCI connector that only can layer one PPCI board, while EPCI connector can layer more than two EPCI boards. With the same pin count and same
