Bus lines contain many lines that switch on and off simultaneously. Especially
on data and address bus lines, an instantaneous large current flows into
the GND and power supply lines. Therefore, it is necessary to suppress
the current flow on the signal lines. The BLM Series (Chip Ferrite Bead)
is generally used for this purpose.
On the control bus line, especially at high operating speeds, the BLMxxB
Series (Chip Ferrite Bead) is used, featuring a sharp impedance rise at
the specified frequency. For high-level noise suppression, the NFR21G Series
(Chip "EMIFIL®" for signal lines) is installed. |
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