 3673/3674 -- 64-bit / 66MHz PMC-to-PCI AdapterCompany Description:The 3673 is a bridged 64-bit/66MHz PMC-to-PCI adapter that permits operation of multiple adapters on a single PCI bus segment. The 21154 bridge will operate either at 33 MHz or 66 MHz PCI bus clock on either the primary or secondary side of the bridge. Dissimilar clock frequencies are supported -- 66 MHz on the primary side and 33 MHz on the secondary side. Any mix of 32 bit and 64 bit on the primary/secondary side is accommodated.A 3.3V switching DC-to-DC converter (on P/N 3674) converts 5V power from the PCI edge finger to 3.3V for the PMC. This allows operation of the PMC with platforms that do not support 3.3V power. The maximum current from the regulator is 3 amps at 3.3 Volts. P/N 3763 does not provide the DC-to-DC converter; taking its 3.3V power directly from the edge fingers. On board indicator LEDs clustered near the top edge of the adapter convey the status of power and key PCI bus signals. An optional fan assembly (P/N 3675) is available that fits over two PMC-to-PCI adapter boards and provides substantial forced-air cooling of high-power PMC modules. Worldwide Headquarters:
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