Advantech SPC-530 Manual de usuario Pagina 12

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SPC-530 User's Manual 9
PCA-6120P4 Rev. A1: 15 ISA / 4 PCI / 1 PICMG-slot passive backplane
Dimensions: 420 x 260 mm
Appendix A Backplanes (Optional)
Termination resistor signals
The termination resistors provide an impedance mismatch at the end of the bus, to prevent signal
reflections. This mismatch has to be balanced by the capability of the CPU and optional cards to
electrically drive the load imposed by the resistor.
Resistor Signals Resistor Signals
RN1, RN8 SA7-SA0 RP1, RP2 MEMW, SMEMR, IOW, IOR
RN4, RN11 SA15-SA8 RN2, RN12 SBHE, LA23-LA17
RN5, RN10 SD0-SD7 RN6, RN7 SA19-SA16
RN3, RN9 SD8-SD15
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