IDT77V500 Datasheet, PDF (1/17 Pages) Integrated Device Technology – SwitchStar ATM Cell Based 1.2Gbps non-blocking Integrated Switch Controller

SwitchStar^TM ATM Cell Based
1.2Gbps non-blocking
Integrated Switch Controller
IDT77V500
Features
x _{Single chip controller for IDT77V400 Switching Memory}
x _{One IDT77V500 and one IDT77V400 form the core required}
for a 1.2Gbps 8 x 8 port non-blocking switch
x _{Supports up to 8192 Virtual Connections (VCs)}
x _{Per VC queuing for fairness, with four priorities per VC}
available for each output port of the switch
x _{Capable of supporting CBR, VBR, UBR, and ABR (EFCI)}
service classes
x _{Low power dissipation}
– 430mW (typ.)
x _{Optional header modification operation}
x _{Multicasting and Broadcasting capability}
x _{Provides congestion management support through EFCI,}
CLP, and EPD functionality
x _{System clock cycle times as fast as 25ns (40MHz)}
x _{Option available for resolving contention issues between}
multiple IDT77V500 configurations
x _{One IDT77V500 can manage up to eight IDT77V400's}
without derating for larger switch configurations
x _{Industrial temperature range (-40° C to +85° C) is available}
x _{Single +3.3V ± 300mV power supply}
x _{Available in a 100-pin Thin Plastic Quad Flat Pack (TQFP)}
and 144-ball BGA
Description
The IDT77V500 ATM Cell Based Switch Controller, when paired with
the IDT77V400 Switching Memory, forms the core control logic and
switch fabric for a 1.2Gbps non-blocking ATM switch. The IDT77V500
manages all of the switch traffic moving through the IDT77V400,
commanding the storage of incoming ATM cells and interpreting and
modifying the cell header information as necessary for data flow through
the switch. It then uses the header information, including priority indica-
tors, to queue and direct the individual cells for transmission out the
appropriate output port of the IDT77V400.
Typical 8 x 8 Switch Configuration using the IDT77V500 Switch Controller
External Interface
for Global Setup
and Control
8-bit Processor/_/
Call Setup
Manager
or IDT77V550
Data
Control
IDT77V500
Switch
Controller
Data
155Mbps
PHY
Port 0
Control
Port 0 _155Mbps
PHY
155Mbps
PHY
Port 7
IDT77V400
Switching
Memory
SwitchStar and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
 2001 Integrated Device Technology, Inc.
1 of 17
Port 7
155Mbps
PHY
,
3607 drw 01
April 11, 2001
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