AMBA Bus-Based Java System-on-Chip

Java applications for real-time embedded systems are becoming more widely used today, yet the existence of mid-layer Java virtual machine (JVM) leads to several performance issues. Of all the software and hardware solutions presented in the literature, Java optimized processor (JOP) can reach reasonable performance but still has rooms to improve. In this paper, we propose a Java system-on-chip (SoC) which integrates JOP core and some popular peripherals based on advanced microcontroller bus architecture (AMBA) on a single chip. A united address mapping method for memory and I/O is also adopted and thus several redundant microcode instructions can be removed. The demonstration prototype is built on the Altera Stratix FPGA (EP1S30B956C6) prototyping board. CMOS synthesis results using 0.18 mum standard cell libraries are also presented.