ADLINK cPCI-6965 6U CompactPCI Core Dual Core Single Board Computer

Key points of engineering deployment and system configuration

1. Power requirements and heat dissipation design

The cPCI-6965 series relies entirely on a single+5V power rail powered by the CompactPCI backplane. According to the measured power consumption data provided in the manual:

Equipped with Core ™ A system with 2 Duo T7500 processors, 2 x 2GB memory, and 60GB SATA hard drive, running at 100% CPU load under Windows XP, consumes a total current of 9.416A @ 5V, corresponding to a total power consumption of 47.08W.

Equipped with Celeron ®  The same configuration system with a 550 processor has a power consumption of 32.67W at full load.

This data is crucial for system integrators, as sufficient power margin must be reserved for each system slot when designing the power capacity and backplane power supply capability of the CompactPCI chassis. ADLINK recommends that industrial grade power supplies should provide at least twice the power capacity required by the system.

In terms of thermal management, the board adopts a passive heat sink design, but requires a forced airflow of at least 16CFM (cubic feet per minute) from the chassis air duct to ensure stable operation within the ambient temperature range of 0 ° C to 55 ° C. For high-power cores ™ 2 Duo configuration, especially attention should be paid to the selection of chassis fans and air duct design to prevent the CPU temperature from exceeding its maximum operating junction temperature (Tjunction_maX is 100 ° C).

2. Mechanical installation and component assembly

The installation of cPCI-6965 involves the assembly of multiple precision components, and the following key steps are worth engineers' attention:

SO-DIMM memory installation: using stacked SO-DIMM slots, first install the lower slot, and then install the upper slot. Be sure to align the foolproof notch of the memory module with the slot positioning key and press it in evenly.

Installation of 2.5-inch hard drive: The included DB-6910SAT adapter board must be used. First, fix the adapter board to the hard drive through four copper pillars, then insert the entire component into the board to board connector (CN14), and finally lock it with screws from the PCB soldering surface. When disassembling the hard drive, the adapter board must be pulled vertically upwards to avoid damaging the connector.

PMC module installation: Before installation, it is necessary to use the 3.3V/5V voltage button on the DB-6965PMC adapter board and the JPX1 jumper on the motherboard to ensure that the V (I/O) signal voltage of the PMC is consistent with the module requirements. Incorrect settings may result in permanent damage to the module.

USB Flash module installation: The USB module needs to be fixed to the CN5 connector of the board using dedicated copper pillars and screws, and the module size should not exceed 39mm × 29mm.

3. BIOS configuration tips

CPCI-6965 adopts AMI ®  Core 8 BIOS， The key configuration items include:

Watchdog Timer (WDT): Implemented through Super I/O IT8712F, it can be enabled/disabled in BIOS and supports a timeout range of 1 second to 15300 seconds. Engineers can visually determine whether the watchdog has experienced a timeout event through the onboard WDT LED (amber). In critical applications, it is essential to write periodic 'dog feeding' code to prevent the system from being unable to automatically recover due to unexpected deadlocks.

Remote Access Configuration: Supports BIOS level remote console redirection through serial port (COM1/COM2). After activation, POST self-test information can be remotely viewed, BIOS settings can be modified, and even the operating system can be booted through a serial port terminal (such as PuTTY). This is extremely useful for unmanned equipment deployed in difficult to access on-site environments such as high radiation and high temperature zones.

PXE remote boot: The onboard gigabit network card supports PXE (Preboot Execution Environment), which can boot the system through the network, making it easy to deploy large-scale operating systems on production lines without optical drives or floppy drives.

Built in USB Flash Module Startup: In the BIOS Boot Device Priority, the onboard USB Flash module should be correctly identified and set as one of the priority boot devices.

Best Practices for Application Scenarios

Scenario 1: Rail Transit Train Control Unit

In the train vehicle control system, cPCI-6965 can serve as the main control computing unit, running train network communication protocols (such as MVB, CANopen) and diagnostic software. Its Core ™ The powerful computing power of the Duo processor can be used to process real-time fusion and fault prediction algorithms for multiple sensor data. The dual gigabit Ethernet ports can be used to connect to the train backbone Ethernet (ECN), enabling data exchange with the driver's display screen, braking system, and air conditioning system. The wide temperature range (0 ° C to 55 ° C) and passive cooling design enable it to adapt to temperature fluctuations inside the cabin without the need for additional active cooling fans (reducing failure points). Combined with the SCSI RAID 1 function of cPCI-R6000-965D RTM, it can provide highly reliable data redundancy storage for the black box recording subsystem.