Advantech PCM-5864L Manual de usuario descargar pdf (Pagina 29)

Chapter 2 Installation 17

When you install a new CPU, be sure to adjust the board settings,

such as CPU type and CPU clock. Improper settings may

damage the CPU.

2.6.2 System clock setting (J5, J9, and J10)

J5, J9 and J10 are used to set the CPU and PCI bus speed to

optimize the system performance. The system chipset will sense

the J10 setting to get the bus frequency, then adjust its internal

timing. J9 is used to set the CPU and PCI clock. J5 is the CPU

clock ratio setting jumper. Refer to the CPU Speed Reference

Table (below) for instructions on adjusting the internal clocks

according to the base CPU speed.

Table 2-3: CPU speed references

CPU Speed (MHz) 75 100 *133 150 166 200 233 266 300 333

Clock setting 50 66 66 60 66 66 66 66 66 66

Frequency ratio 1.5 1.5 2 2.5 2.5 3 3.5 4 4.5 5

* default setting

Table 2-4: System/PCI clock setting (J9)

System 50 MHz 60 MHZ *66 MHz 75 MHz

PCI 25 MHz 30 MHz *33.3 MHz 37.5 MHz

* default setting

2 4 6

1 3 5

2 4 62 4 62 4 6

1 3 51 3 51 3 5

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 140 141

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Advantech PCM-5864L Manual de usuario Pagina 29