KS8995XA
KS8995XA is Integrated 5-Port 10/100 QoS Switch manufactured by Micrel Semiconductor.
Description
The KS8995XA is a highly integrated Layer-2 quality of service (Qo S) switch with optimized bill of materials (BOM) cost for low port count, cost-sensitive 10/100Mbps switch systems. It also provides an extensive feature set including three different Qo S priority schemes, a dual MII interface for BOM cost reduction, rate limiting to offload CPU tasks, software and hardware power-down, a MDC/MDIO control interface and port mirroring/monitoring to effectively address both current and emerging Fast Ethernet applications. The KS8995XA contains five 10/100 transceivers with patented mixed-signal low-power technology, five media access control (MAC) 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 100BASE-TX. In addition, two of the PHY units support 100Base FX (Ports 4 and 5).
Functional Diagram
Auto MDI/MDI-X Auto MDI/MDI-X Auto MDI/MDI-X Auto MDI/MDI-X Auto MDI/MDI-X 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
FIFO, Flow Control, VLAN Tagging, Priority
1K Look-Up Engine Queue Mgmnt
10/100 MAC 2 10/100 MAC 3 10/100 MAC 4 10/100 MAC 5 SNI
Buffer Mgmnt
Frame Buffers
LED I/F
Control Registers
EEPROM I/F
..
Micrel Inc.
- 2180 Fortune Drive
- San Jose, CA 95131
- USA
- tel +1 (408) 944-0800
- fax + 1 (408) 474-1000
- http://.micrel.
September 2008
M9999-091508
Micrel, Inc.
Features
- Integrated switch with five MACs and five Fast Ethernet transceivers fully pliant to IEEE 802.3u standard
- Shared memory based switch fabric with fully nonblocking configuration
- 10BASE-T, 100BASE-TX and 100BASE-FX modes (FX in Ports 4 and 5)
- Dual MII configuration: MII-Switch (MAC or PHY mode MII) and MII-P5 (PHY mode...
