User guide

User Guide CC3-CAJUN • Low Power CompactPCI CPU
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EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 Hamm • Germany
Tel. [phone] • Fax. [phone] • [e-mail] • www.ekf.com
Microprocessor
The CC3-CAJUN supports the 0.13µ Ultra Low-Voltage (ULV) Celeron® and Low-Voltage (LV)
Pentium®-III processors as listed below. The processors are housed in a Micro FC-BGA package
for direct soldering to the PCB, i.e. the CPU chip cannot be removed or changed by the user.
Do not confuse the processor host bus frequency (FSB front side bus or PSB processor side bus)
with the memory speed or the PCI clock, which are independent from each other. The ULV
Celeron processors support 100MHz FSB clock, while the LV Pentium III processors are designed
for 133MHz FSB clock. The internal CPU speed is achieved by multiplying the host bus frequency
by a fixed value.
The CC3-CAJUN is powered across the CompactPCI connectors J1 (3.3V, 5V). The processor core
voltage is generated by a switched voltage regulator, sourced from the 5V plane. The ULV
Celeron processors signal their required core voltage by 5 dedicated pins according to the IMVPII
specification, which can be directly used to control the settings of the voltage regulator. The
required core voltage for the LV Pentium III processors however, complying to the VRM8.5
specification, must be adjusted by a couple of resistors on the CC3-CAJUN. The core voltage
settings actually in use can also be read back by several GPI lines of the ICH2.
ULV Celeron® 0.13µ Processors Supported (Pb Free RoHS compliant)
Processor Speed Host Bus L2 Cache CPU ID Package Stepping sSpec
Celeron 400MHz 100MHz 256KB 06b1h µFCBGA FBA1 SL7UK
Celeron 650MHz 100MHz 256KB 06b4h µFCBGA FBB1 SL7UJ
Low Voltage Pentium® III 0.13µ Processors Supported (Pb Free RoHS compliant)
Processor Speed Host Bus L2 Cache CPU ID Package Stepping sSpec
Pentium III 800MHz 133MHz 512KB 06b4h µFCBGA tB1 SL7T4
Pentium III 933MHz 133MHz 512KB 06b4h µFCBGA tB1 SL7T3