The KSZ8841-series single-port chip includes PCI and non-PCI CPU interfaces. This datasheet describes the KSZ8841-PMQL with PCI CPU interface chips. For information on the KSZ8841 non-PCI CPU interface chips, refer to the KSZ8841-MQL datasheet. The KSZ8841-PMQL is a single port Fast Ethernet MAC chip with a 32-bit/33MHz PCI processor interface. Designed to be fully compliant with the IEEE 802.3u standard, the KSZ8841-PMQL is also available in an industrial temperature-grade version of the KSZ8841PMQL, the KSZ8841-PMQLI, (See Ordering Information). Physical signal transmission and reception are enhanced through the use of analog circuitry, making the design more efficient and allowing for lower power consumption. The KSZ8841-PMQL is designed using a low-power CMOS process that features a single 3.3V power supply with 5V tolerant I/O.