ADLINK NuPRO-780 PICMG Bus Core CPU Card

ADLINK NuPRO-780: Analysis of PICMG Full length Industrial CPU Card Technology Based on Intel i815E Chipset

In the field of industrial computing, the PICMG (PCI Industrial Computer Manufacturers Group) full-length card standard has undergone decades of development and still holds an important position in scenarios such as military, telecommunications, rail transit, medical equipment, and factory automation that require high reliability and scalability. Its standardized external dimensions (338mm × 122mm), stable mechanical structure, and excellent heat dissipation characteristics make it an ideal choice for building robust industrial computers.

The ADLINK NuPRO-780 series is an outstanding representative that follows this standard. As a PICMG full-length CPU card designed based on the Intel i815E B-Step chipset, NuPRO-780 successfully combines the mature ecosystem of Socket-370 architecture with industrial grade reliability requirements, providing a highly competitive computing platform for embedded applications that require high cost-effectiveness, rich I/O, and long-term stable supply. Its rich model options (single port LV version and dual port DV version) provide flexible configuration space for different application scenarios.

Overview of Product Positioning and Hardware Architecture

The NuPRO-780 series is designed to meet the computing needs of harsh industrial environments. It adopts the standard PICMG full-length card specification (size 338mm × 122mm), which is compatible with the vast majority of standard industrial chassis and backplanes. Its core hardware platform is based on the Intel i815E B-Step chipset (including the 82815E GMCH North Bridge and 82801BA ICH2 South Bridge). This chipset was known for its excellent stability, integration, and graphics performance at the time, and still has a large number of existing applications and deep driver ecosystem support in the industrial field today.

1. Processor support: Compatible with multiple generations of Socket-370 CPU

The NuPRO-780 is equipped with a standard Socket-370 processor socket, supporting a wide range of CPU options, allowing system integrators to flexibly choose based on performance requirements and cost budgets:

Intel Pentium III (FC-PGA/FC-PGA2): Supports 66/100/133MHz Front End Bus (FSB), with a maximum clock speed of over 1GHz. Its powerful floating-point computing capability and mature instruction set architecture enable it to handle moderately complex control algorithms and data processing tasks.

Intel Celeron (FC-GGA/FC-PGA2): As a cost-effective option, it also supports 66/100MHz FSB and is suitable for embedded control applications with relatively moderate computing performance requirements.

VIA C3 processor: Supports low-power, fanless design, especially suitable for enclosed industrial chassis environments with strict limitations on heat dissipation and power consumption.

2. Chipset Core - Intel i815E and ICH2

North Bridge (GMCH) - Intel 82815E: Integrated with Intel Extreme Graphics graphics core, supports 24 bit 230MHz RAMDAC, and can output up to 1600 × 1200@85Hz Resolution that meets the majority of industrial HMI display requirements. The graphics memory adopts Intel Dynamic Video Memory Technology (DVMT), which can dynamically allocate 1MB to 11MB of memory from the system main memory as needed, effectively balancing cost and performance. In addition, Beiqiao also integrates an AC'97 audio controller (which requires an external DB-AC97S daughter card for audio I/O).

South Bridge (ICH) - Intel 82801BA: Provides comprehensive I/O capabilities, including two UDMA/100 IDE channels (supporting up to 4 ATAPI devices), two USB 1.1 host controllers, AC'97 links, SMBus controllers, and PCI bus bridging functionality.

3. Memory support

The NuPRO-780 is equipped with two 168 pin DIMM slots and supports a maximum of 512MB PC-133 non buffered SDRAM. Although 512MB may seem insignificant by today's standards, it is sufficient to meet the needs of the vast majority of tasks for industrial devices running lightweight embedded operating systems (such as Windows 98/2000/NT, Linux, VxWorks) and single control applications.

Deep analysis of key characteristics

1. High flexibility serial interface - Configurability of COM2

The serial port design of NuPRO-780 fully reflects the considerations of industrial applications. Onboard two serial ports:

COM1: Standard RS-232 interface, providing complete 9-wire signals (DCD, RXD, TXD, DTR, GND, DSR, RTS, CTS, RI), suitable for connecting traditional serial devices, barcode scanners, HMI touch screens and other peripherals.

COM2: This is a major highlight of the product. COM2 can be flexibly configured into one of the following three modes through onboard jumpers (JP4, JP3, JP2 combination) and function selection jumper (JP1):

RS-232: Standard full-featured serial port, with the same functionality as COM1.

RS-422: Differential signal transmission, supports long-distance (up to 1200 meters) point-to-point communication, suitable for connecting long-distance devices.

RS-485: Multipoint bus topology, supports half duplex communication, suitable for building industrial fieldbus networks (such as MODBUS).