KS8995X

KS8995X Product Brief Revision 1.08 Integrated 5-Port 10/100 QoS Switch The KS8995X is a highly integrated layer-2 QoS switch with optimized BOM (Bill-Of-Materials) cost for low port count, cost-sensitive 10/100Mbps switch systems. It also provides an extensive feature set including three different QoS priority schemes, dual MII interface for BOM cost reduction, programmable rate limiting to offload CPU tasks, software & hardware power-down , MDC/MDIO control interface and port monitoring to effectively address both current and emerging Fast Ethernet applications. The KS8995X contains five 10/100 transceivers with patented mixed-signal low-power technology, five MAC (Media Access Control) units, a high-speed non-blocking switch fabric, a dedicated address lookup engine, and an on-chip frame buffer memory. All PHY units support 10Base-T and 100BaseTX. In addition, two of the PHY units support 100BaseFX (Ports 4 & 5). Features • • • • • • • • • • • Integrated switch with five MACs and five Fast Ethernet transceivers fully compliant to IEEE 802.3u standard Shared memory based switch fabric with fully nonblocking configuration 10BaseT, 100BaseTX and 100BaseFX modes (FX in Ports 4 & 5) Dual MII configuration: MII-Switch (MAC or PHY mode MII) and MII-P5 (PHY mode MII) VLAN ID tag/untag options, per-port basis Programmable rate limiting, ingress and egress port, rate options for high and low priority, per port basis Flow control or drop packet rate limiting (ingress port) Broadcast storm protection with % control–global and per-port basis Optimization for fiber-to-copper media conversion Full-chip hardware power-down support (register configuration not saved) Per-port based software power-save on PHY (idle link detection, register configuration preserved) Block Diagram Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX Auto MDI/MDIX MII-P5 MDC, MDI/O MII-SW or SNI LED0[5:1] LED1[5:1] LED2[5:1] 10/100 T/Tx 1 10/100 T/Tx 2 10/100 T/Tx 3 10/100 T/Tx/Fx 4 10/100 T/Tx/Fx 5 10/100 MAC 1 1K look-up Engine FIFO, Flow Control, VLAN Tagging ,Priority 10/100 MAC 2 10/100 MAC 3 10/100 MAC 4 10/100 MAC 5 SNI Queue Mgmnt Buffer Mgmnt Frame Buffers LED I/F Control Registers EEPROM I/F Micrel Semiconductor TEL: 1.800.401.9572 FAX: 1.408.474.0159 HTTP:// www.micrel.com 1 Features • • • • • • • • • • • • • • • • QoS/CoS packets prioritization supports: per port, 802.1p and DiffServ based 802.1p/q tag insertion or removal on a per port basis (egress) Port-based VLAN support MDC and MDI/O interface support to access the MII PHY control registers (not all control registers) MII local loopback support On-chip 64kB memory for frame buffering (not shared with 1K unicast address table) 1.4Gbps high performance memory bandwidth Wire speed reception and transmission Integrated look-up engine with dedicated 1K unicast MAC addresses Automatic address learning, address aging and address migration Full duplex IEEE 802.3x and half-duplex back pressure flow control Comprehensive LED support 7-wire SNI support for legacy MAC interface Automatic MDI/MDI-X crossover for plug-and-play Low power, 1.8/2.5/3.3V, 0.18um CMOS technology Available in 128-pin PQFP package Applications • • • • • • • • • Broadband gateway/firewall/VPN Integrated DSL or cable modem multi-port router Wireless LAN access point + gateway Home networking expansion Standalone 10/100 switch Hotel/campus/MxU gateway Enterprise VoIP gateway/phone FTTx customer premise equipment Media converter 2 Micrel Semiconductor TEL: 1.800.401.9572 FAX: 1.408.474.0159 HTTP:// www.micrel.com System Level Applications 10/100 MAC 1 Switch Controller On-Chip Frame Buffers 10/100 PHY 1 10/100 PHY 2 10/100 PHY 3 10/100 PHY 4 10/100 PHY 5 1-port WAN I/F 4-port LAN 10/100 MAC 2 10/100 MAC 3 10/100 MAC 4 10/100 MAC 5 SPI/GPIO SPI Ethernet MAC CPU MII-SW MII-P5 Ethernet MAC External WAN port PHY not needed Figure 1. Broadband Gateway 10/100 MAC 1 Switch Controller On-Chip Frame Buffers 10/100 PHY 1 10/100 PHY 2 10/100 PHY 3 10/100 PHY 4 10/100 PHY 5 4-port LAN 10/100 MAC 2 10/100 MAC 3 10/100 MAC 4 10/100 MAC 5 WAN PHY & AFE (xDSL, CM...) CPU SPI/GPIO SPI MII-SW MII-P5 Ethernet MAC Figure 2. Integrated Broadband Router Micrel Semiconductor TEL: 1.800.401.9572 FAX: 1.408.474.0159 HTTP:// www.micrel.com 3 10/100 MAC 1 Switch Controller On-Chip Frame Buffers 10/100 PHY 1 10/100 PHY 2 10/100 PHY 3 10/100 PHY 4 10/100 PHY 5 5-port LAN 10/100 MAC 2 10/100 MAC 3 10/100 MAC 4 10/100 MAC 5 Figure 3. Standalone Switch Contact Micrel Semiconductor Location Corporate HQ Eastern USA Southeast USA Central USA Western USA Northwest USA Southwest USA Korea Taiwan China Japan Europe Western Europe Address 1849 Fortune Drive 93 Branch Street 8105 Bluffridge Drive 722 S. Denton Tap Suite 130 2180 Fortune Drive 401 NE Ravenna Blvd. Box 152 7545 Irvine Center Dr. Suite 200 4F, KTB Building, 826-14, Yeoksam-dong, Kangnam-ku 7F-6, No. 237, Sec. 2, Fu-Hsing South Road 12A, XingHao City Garden 1-16-15 Dogenzaka, Shibuyaku 1st Floor, 3 Lockside Place, Mill Lane 10, avenue du Quebec, Villebon BP116 San Jose, CA 95131 USA Medford, NJ 08055 USA Raleigh, NC 27615 USA Coppell, TX 75019 USA San Jose, CA 95131 USA Seattle, WA 98115 USA Irvine, CA 92618 USA Seoul 135-080 Korea Taipei, Taiwan, R.O.C. Shenzhen, P.R. China Tokyo 150-0043 Japan Newbury, Berks RG14 5QS UK Courtaboeuf Cedex 91944 France Telephone +1 (408) 944-0800 +1 (609) 654-0078 +1 (919) 870-7650 +1 (972) 393-2533 +1 (408) 944-0800 +1 (206) 526-7299 +1 (949) 623-8343 +82 (2) 3466-3000 +886 (2) 2705-4976 +86 (755) 2693-4601 +81 (3) 5428-0871 +44 1635 524455 +33 (0) 1 6092 4189 +81 (3) 5428-0872 +44 1635 524466 +33 (0) 6 0868 4489 Fax +1-408-944-0970 +1 (609) 546-0989 +1 (919) 870-7651 +1 (972) 393-2540 +1-408-944-0970 +1 (206) 526-8829 +1 (949) 623-8305 +82 (2) 3466-2999 +886 (2) 2705-4977 4 Micrel Semiconductor TEL: 1.800.401.9572 FAX: 1.408.474.0159 HTTP:// www.micrel.com STOCK NO. M-1009