KSZ8842 PMQL/PMQLI www.micrel.com Product Brief 2-Port Ethernet Switch with PCI Interface Description Benefits The KSZ8842-PMQL is the industry’s first 2-port switch with a PCI CPU interface. An Industrial Temperature grade part, the KSZ8842-PMQLI will also available from Q1, 2006. The KSZ8842P is a proven, 4th generation, integrated, fully managed Layer 2 switch that is entirely compliant to IEEE802.3u standards. The KSZ8842P can be configured as a low-latency repeater to allow for ‘cut thru’ in latency critical Embedded or Industrial Ethernet applications. For industrial automation applications, it runs in half-duplex mode. The KSZ8842P offers an extensive feature set that includes tag/port-based VLAN, QoS priority management, MAC filtering function, MIB counters, and CPU control/data interfaces to effectively address both current and emerging Fast Ethernet applications. The KSZ8842P contains two 10/100 transceivers with patented mixed-signal low-power technology, two 1K entry media access control (MAC) units, a separate DMA channel, a high-speed non-blocking switch fabric, a dedicated 1K entry forwarding table, and an on-chip frame buffer memory. In addition to offering all of the features of an integrated Layer 2 managed switch: • 2-port switch with 32 bit/33MHz PCI bus for different host processor interfaces • Fully compliant to the IEEE802.3u standard • Repeater mode capabilities to allow for ‘cut-thru’ in latency critical Industrial Ethernet or Embedded Ethernet applications • Dynamic buffer memory scheme – Essential for applications such as Video over IP where image jitter is unacceptable • Micrel LinkMDTM cable diagnostic capabilities to determine cable length, determine distance to fault, and to diagnose faulty cables • HP Auto MDIX crossover with disable and enable option • Industrial temperature support: –40oC to +85oC • Four priority queues to handle voice, video, data, and control packets Block Diagram 10/100 T/TX PHY 1 10/100 MAC 1 HP Auto MDI/MDI-X 10/100 T/TX PHY 2 10/100 MAC 2 PCI Bus Interface 32 Bit/33MHz PCI Interface Unit DMA Channel 1K Look-up Engine FIFO, Flow Control, VLAN Tagging, Priority HP Auto MDI/MDI-X Queue Management Buffer Management Frame Buffers MIB Counters Control Registers EEPROM Interface EEPROM I/F P1 LED[3:0] P2 LED[3:0] Micrel Semiconductor LED Drivers Note: For an MII/RMII, I2C or SPI interface, use the KSZ8893ML. LinkMD is a trademark of Micrel, Inc. TEL: 1.408.944.0800 FAX: 1.408.474.1000 HTTP:// www.micrel.com QoS/CoS Packets Prioritization Support Features Switch Management • Non-blocking switch fabric assures fast packet delivery by utilizing a 1K entry • Full-duplex IEEE 802.3x flow control (Pause) with force mode option • Half-duplex back pressure flow control Advanced Switch Management • IEEE 802.1q VLAN support for up to 16 groups fullrange of VLAN ID • VLAN ID tag/untag options, per port basis • IEEE 802.1p/q tag insertion or removal on a per port basis (egress) • Programmable rate limiting at the ingress and egress port • Broadcast storm protection • IEEE 802.1d spanning tree protocol support • MAC filtering function to filter unicast packets • Unknown MAC address forwarding function • Direct forwarding mode enabling the processor to identify the ingress port and to specify the egress port • IGMP v1/v2 snooping support for multicast packet filtering Monitoring • Port mirroring/monitoring/sniffing: ingress and/or egress traffic to any port • Management information base (MIB) counters for fully compliant statistics gathering: 34 MIB counters per port • Loopback modes for remote diagnostic of failure • Per port, 802.1p and DiffServ based • Re-mapping of 802.1p priority field per port basis Power Modes, Packaging, and Power Supplies • Full-chip hardware power-down (register configuration not saved) provides for low power dissipation • Per port-based software power-save on PHY (idle link detection, register configuration preserved) • Single power supply: 3.3V • Commercial Temperature Range: 0oC to +70oC • Industrial Temperature Range: –40oC to +85oC (KSZ8842-PMQLI ordering code) • Available in 128-pin PQFP Applications • Consumer Applications: – Set-Top Box • Fax • TV • Digital TV • Video over IP • Industrial Control in Latency Critical Applications: – Motion Control • Industrial Control Sensor Devices: – Temperature • Pressure • Level • Valves • Automotive Security and Surveillance Markets Fast Ethernet Embedded Ethernet Industrial Ethernet Comprehensive Register Access • Control registers configurable on the fly (port-priority, 802.1p/d/q) For additional information, contact your local Micrel Field Application Engineer or salesperson. Contact Micrel Semiconductor Location Address Telephone Fax Corporate HQ 2180 Fortune Drive San Jose, CA 95131 USA +1 408 944 0800 +1 408 944 0970 Western USA 2180 Fortune Drive San Jose, CA 95131 USA +1 408 944 0800 +1 408 944 0970 Central USA 2425 N. Central Express Way, Suite 351 Richardson, TX 75080 USA +1 972 393 2533 +1 408 474 1210 Eastern USA 93 Branch Street Medford, NJ 08055 USA +1 609 654 0078 +1 609 654 0989 Latin America 2425 N. Central Express Way, Suite 351 Richardson, TX 75080 USA +1 972 393 2533 +1 408 474 1210 China Rm 601, Bldg B, Int’l Chamber of Commerce Mansion, Fuhua Rd 1 Futian Dist Shenzhen, P.R. China 518048 +86 755 8302 7618 +86 755 8302 7637 Japan Queens Tower 14F, 2-3-1, Minatomirai, Nishi-ku, Yokohama-shi Kanagawa 220-8543, Japan +81 45 224 6616 +81 45 224 6716 Korea 8F, AnnJay Tower Bldg, 718-2, Yeoksam-dong, Kangnam-ku Seoul 135-080, Korea +82 2 538 2380 +82 2 538 2381 New Zealand Office 2, CML Bldg, 2 Perry Street Masterton, New Zealand +64 6 378 9799 +64 6 378 9599 Singapore 300 Beach Road, #10-07 The Concourse Singapore 199555 +65 6291 1318 +65 6291 1332 Taiwan 4F, No. 18 Lane 321, Yang-Guang Street, Nei-Hu Chu Taipei 11475 Taiwan, R.O.C +866 2 8751 0600 +866 2 8751 0746 UK/EMEIA 1st Floor, 3 Lockside Place, Mill Lane, Newbury, Berks United Kingdom RG14 5QS +44 1635 524455 +44 1635 524466 France/Southern Europe 10 Avenue du Quebec, Villebon - B.P. 116, 91944 Courtaboeuf Cedex France +33 1 60 92 4190 +33 1 60 92 4189 Sweden/Nordic Lundagatan 11 6tr, SE-171 63 Solna Sweden +46 8 470 5950 +46 8 470 5950 Micrel Semiconductor TEL: 1.408.944.0800 FAX: 1.408.474.1000 HTTP:// www.micrel.com Rev. 1.3 Stock Code: Mxxxx-xxxxxx