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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