txc-05805 TranSwitch Corporation, txc-05805 Datasheet - Page 2

• Manufacturer Part Number: txc-05805
• Description: High Performance, High-density Atm Cell Switch
• Manufacturer: TranSwitch Corporation

CUBIT-622
High Performance ATM Switch
Field-proven technology.
Based on TranSwitch’s field-proven CUBIT technology, the CUBIT-622
is a high performance ATM switch that interfaces directly with
UTOPIA level 1/2 (8/16 bit) compliant devices. It supports high-density
switching of up to 64 PHY ports with total throughput rates of up
to 622 Mb/s. The CUBIT-622 efficiently incorporates all functions
necessary for ATM cell transfer at OC-12 rates including cell address
translation, cell routing and outlet cell queuing. Outstanding
management capabilities and prioritized service level support for
unicast and multicast cell transfers ensures reliable switching
through a high bandwidth interface. In combination with other
TranSwitch complementary devices, the CUBIT-622 supports a
multitude of system configurations based on TranSwitch’s patented
CellBus switch fabric technology including multiplexing and
switching systems. In short, CUBIT-622 offers both high performance
and high throughput in a flexible and cost-effective package.
Line Side
Interface
UTOPIA
Outlet
Inlet
Cell
Port
Cell
Port
FIFO
FIFO
Interface
SSRAM
SSRAM
Outlet Queue
Translation
Control
SRAM
Microprocessor
Interface
Interface
Host
Multicast
Built-in flexibility.
The UTOPIA port constitutes the main interface for all cell traffic
between the CUBIT-622 and other physical layer devices. The
CUBIT-622 supports both slave and master modes of operations.
In addition, tandem operation is available in master mode. This
enables two CUBIT-622s, one device the primary UTOPIA master,
and the other the secondary master, to be connected to different
CellBus buses while still having the ability to communicate to the
same PHY devices. Tandem operation can provide either backplane
redundancy or increased system capacity and lower latency
through load sharing. This built-in flexibility enables systems
engineers to efficiently tailor their designs to meet their own
unique system requirements.
Superior functionality for maximum control.
The CUBIT-622’s on-chip memory controller provides a glueless
interface to support up to 8 Mbits of external translation RAM and
up to 16 Mbits of queuing RAM for a maximum queue size of
30,000 cells.
Queue
Inlet
Interface
CellBus
Arbiter
Logic
Bus
CellBus
Switch Side