Embedded network camera processor system on a chip for various low-power multimedia applications

Abstract

In this paper we present an embedded network camera processor (NCP) system on a chip (SoC) for various low-power multimedia applications. The NCP SoC comprises a digital camera processor optimized for a CCD sensor, a motion JPEG encoder to compress the data, an Ethernet controller to transmit the data, ARM processor and many peripherals. Using the NCP SoC allows the raw image from a CCD sensor to be filtered, compressed and transmitted anywhere through various Ethernet protocols, with no additional hardware. The NCP SoC is designed with Verilog-HDL. Also, we followed a strict ASIC flow including functional behavior verification and a scan test. The NCP SoC is fabricated with 0.25 ${\upmu }{\text {m}}$ CMOS technology. The total chip size, including embedded memory, is $7800\times 7800\,{\upmu }{\text {m}}^{2}$ and the gate count is 1.2 million. The NCP SoC runs at up to 48 MHz, and supports various slower clock frequencies for low-power applications requiring additional power saving modes: 6 MHs, 12 and 24 MHz at 2.5 V.