KS8993M
KS8993M is Integrated 3-Port 10/100 Managed Integrated 3-Port 10/100 Managed manufactured by Micrel Semiconductor.
Description
The KS8993M, a highly integrated Layer 2 managed switch, is designed for low port count, cost-sensitive 10/100 Mbps switch systems. It offers an extensive feature set that includes tag/port-based VLAN, quality of service (Qo S) priority, management, management information base (MIB) counters, MII/SNI, and CPU control/data interfaces to effectively address both current and emerging Fast Ethernet applications.
The KS8993M contains two 10/100 transceivers with patented mixed-signal low-power technology, three media access control (MAC) units, a high-speed non-blocking switch fabric, a dedicated address lookup engine, and an on-chip frame buffer memory. Both PHY units support 10BASE-T and 100BASETX. In addition, one of the PHY unit supports 100BASE-FX. The KS8993ML is the single supply version with all the identical rich features of the KS8993M.
Functional Diagram
1KLook-Up Engine AUTO MDI/MDI-X 10/100 T/TX/FX PHY 1 10/100 MAC1 Queue Manageme nt FIF O,Flow Control, VLANTagging,Priority
AUTO MDI/MDI-X
10/100 T/TX PHY 2
10/100 MAC2
Buffer Manageme nt
MII/SNI
10/100 MAC3
Frame Buffers
MIB Counters
MIIM SMI I2C P1 LED[3:0] P2 LED[3:0]
Control Registers
EEP ROM Interface
LED Drivers
Strap-In Configuration Pins
Micrel Inc.
- 2180 Fortune Drive
- San Jose, CA 95131
- USA
- tel +1 (408) 944-0800
- fax + 1 (408) 474-1000
- http://.micrel.
April 2005
M9999-041205
Micrel, Inc.
KS8993M/ML/MI
Features
- Proven Integrated 3-Port 10/100 Ethernet Switch
- 2nd generation switch with three MACs and two PHYs fully pliant to IEEE 802.3u standard
- Non-blocking switch fabric assures fast packet delivery by utilizing a 1K MAC address lookup table and a store-and-forward architecture
- Full duplex IEEE 802.3x flow control (pause) with force mode option
- Half-duplex back pressure flow...
