BCM5404 ETC, BCM5404 Datasheet

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... BCM5404 QUAD-PORT 10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER • Four fully integrated 10BASE-T/100BASE-TX/ 1000BASE-T Gigabit Ethernet transceivers on a single monolithic CMOS chip • Fully compliant with IEEE 802.3, 802.3u, and 802.3ab standards • 0.13um CMOS — low power and cost • ...

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... Bias Generator MII Registers *{1:4} Refers to the four separate Gigabit transceivers in the BCM5404 physical wiring defects that the BCM5404 cannot automatically correct for and channel conditions such as excessive cable length, and return loss, crosstalk, echo, and noise. Broadcom’s cable analyzer software can be used with the device to provide remote management of the cable and a first level of diagnostics and fault isolation ...