Datasheet KS8995M (Microchip)

DescriptionIntegrated 5-Port 10/100 Managed Switch
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KS8995M Micrel, Inc. KS8995M. Integrated 5-Port 10/100 Managed Switch

Datasheet KS8995M Microchip

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KS8995M Micrel, Inc. KS8995M
Integrated 5-Port 10/100 Managed Switch
Rev 1.13 General Description Features The KS8995M is a highly integrated Layer-2 managed 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 such as tag/port-based VLAN, QoS
(Quality of Service) priority, management, MIB counters, dual
MII interfaces and CPU control/data interfaces to effectively
address both current and emerging Fast Ethernet applications.
The KS8995M 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 look-up engine, and an on-chip
frame buffer memory.
All PHY units support 10BaseT and 100BaseTX. In addition,
two of the PHY units support 100BaseFX (Ports 4 and 5).
All support documentation can be found on Micrel’s web site
at: • 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
• 1.4Gbps high-performance memory bandwidth
• 10BaseT, 100BaseTX and 100BaseFX modes (FX in
Ports 4 and 5)
• Dual MII configuration: MII-Switch (MAC or PHY mode
MII) and MII-P5 (PHY mode MII)
• IEEE 802.1q tag-based VLAN (16 VLANs, full-range
VID) for DMZ port, WAN/LAN separation or inter-VLAN
switch links
• VLAN ID tag/untag options, per-port basis
• Programmable rate limiting 0Mbps to 100Mbps, ingress
and egress port, rate options for high and low priority,
• Flow control or drop packet rate limiting (ingress port)
• Integrated MIB counters for fully compliant statistics
gathering, 34 MIB counters per port Functional Diagram 10/100
T/Tx 1 10/100
MAC 1 Auto
MDI/MDIX 10/100
T/Tx 2 10/100
MAC 2 Auto
MDI/MDIX 10/100
T/Tx 3 10/100
MAC 3 Auto
MDI/MDIX 10/100
T/Tx/Fx 4 10/100
MAC 4 Auto
MII-SW or SNI 10/100
T/Tx/Fx 5 10/100
MAC 5 Control Reg I/F
LED2[5:1] SNI LED I/F FIFO, Flow Control, VLAN Tagging, Priority Auto
MDI/MDIX 1K look-up
Buffers SPI MIB
Counters Control
Registers EEPROM
I/F KS8995M Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • July 2006 1 M9999-070506