IDT77V400 Datasheet, PDF (1/26 Pages) List of Unclassifed Manufacturers – SwitchStarTM ATM Cell Based 8 x 8 1.2Gbps non-blocking Integrated Switching Memory

SwitchStar^TM ATM Cell Based
8 x 8 1.2Gbps non-blocking
Integrated Switching Memory
IDT77V400
Features List
! _{Single chip supports an 8 x 8 port switch at 155Mbps per}
port
! _{Central Memory Architecture eliminates Head-of-Line}
Blocking by sharing the memory array with all ports
! _{Low power dissipation}
– 330mW (typ.)
! _{Data Path Interface (DPI) provides configurable Input and}
Output ports; up to 8 receive and 8 transmit ports at
155Mbps
! _{Supports data rates up to 1.2Gbps with a 32-bit wide port}
configuration; 155Mbps per 4-bit port
! _{Can be cascaded for larger switch configurations}
! _{Fast Input/Output port cycle times}
! _{Expander and Concentrator function is fully supported by}
the Input and Output port configuration options
! _{8192 cells (52 to 56 bytes each) of on-chip buffer memory}
capacity
! _{Configurable cell lengths of 52, 53, 54, 55, or 56 bytes can}
be independently chosen for Input and Output ports
! _{Byte Addition or Byte Subtraction for x4/x8 to x16/x32}
conversion capability
! _{Internal header Cyclical Redundancy Check (CRC) and}
generation logic on-chip
! _{Header modification, pre-pend, and post-pend operations}
available as well as Multicasting and Broadcasting
capability
! _{High-bandwidth control port for queue controller system}
block, up to 36 MHz cycle time
! _{Can be used with the companion IDT77V500 Switch}
Controller or custom logic for traffic management
! _{Industrial temperature range (-40°C to +85°C) is available}
! _{Single +3.3V ± 300mV power supply}
! _{Available in an 208-pin Plastic Quad Flat Pack (PQFP) and}
256-ball BGA
Block Diagram
External Interface
for Global Setup
and Control
8-bit Processor/
Call Setup
Manager
or IDT77V550
Data
Control
IDT77V500
Switch
Controller
Data
Control
155Mbps ^{Port 0}
Port 0 _155Mbps
PHY
PHY
,
IDT77V400
155Mbps
PHY
Port 7
Switching
Memory
Port 7
155Mbps
PHY
3606 drw 01
Figure 1 Typical 8x8 Switch Configuration using the IDT77V400 Switching Memory
SwitchStar and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
 2001 Integrated Device Technology, Inc.
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March 31, 2001
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