The KSZ8842-series of 2-port switches includes PCI and nonPCI CPU interfaces (see Ordering Information). This datasheet describes the KSZ8842-PMQL PCI CPU interface chips. For information on the KSZ8842-MQL CPU non-PCI interface switches, refer to the KSZ8842-MQL datasheet. The KSZ8842-PMQL is the industry's first fully managed 2-port switch with a 32 bit/33MHz PCI processor interface. It is a proven, 4th generation, integrated Layer 2 switch that is compliant with the IEEE 802.3u standard. An industrial temperature grade version of the KSZ8842-PMQL, also can be ordered the KSZ8842-PMQLI, (see Ordering Information). The KSZ8842-PMQL can be configured as a switch or as a low-latency (<310 nanoseconds) repeater in latency-critical, embedded or industrial Ethernet applications. For industrial automation applications, the KSZ8842-PMQL can run in halfduplex