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IDT77301
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MFG:IDT Package Cooled:QFP D/C:07/08+

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Part Number: IDT77301

MFG: IDT

Package Cooled: QFP

D/C: 07/08+

Description: The IDT77301 UtopiaFIFO is a high-speed, low power single input port supplying four demultiplexing FIFO output ports. E...

IDT77301 General Description

The IDT77301 UtopiaFIFO is a high-speed, low power single input port supplying four demultiplexing FIFO output ports. Each of the four output synchronous (clocked) FIFOs are 64 words (128 bytes) in depth. Data is written to the input port in "cells" (fixed length data packets). The cell size is programmable from 16 bytes to 128 bytes.

The input port can be configured to support 9-bit or 18-bit wide data buses. (Multiple 77301's can be configured to handle 32 and 64-bit buses with no additional logic.)

There are four routing methods that can be used to transfer data to the 77301. Two methods use out-band routing for the port selection, which requires use of the Address Location bus. The remaining two methods support in-band routing, which uses the Address Location bus in conjunction with the Data bus for port selection. Utopia 2 signaling supports single cell transfers to single output ports, but the 77301 also offers a proprietary multicasting protocol. Multicasting enables a single cell to be transferred simultaneously to multiple selected output ports.

The four output ports can be configured as 9-bit or 4-bit wide data buses. (18-bit wide buses can be supported with multiple 77301's with no additional logic required.) Utopia 1 signalling protocol is supported for these ports. Data can be read from each FIFO output port independently.

Separate input and output port clocks are provided and can be operated up to 62.5 MHz. This provides the user with 1.125Gbps composite bandwidth on the input port and 562Mbps bandwidth on each output port.

Each 77301 has a unique programmable chip identification register. Multiple UtopiaFIFOs with programmed chip identification can be utilized to direct a 9, 18, 36 or 64-bit bus to as many as 31 output ports.

The principle application for the 77301 is in ATM networking based systems, but can be used in any cell based data or telecommunications application requiring the separation of independent data streams from a single input channel.

IDT77301 Maximum Ratings

Symbol	Rating	Commercial	Industrial	Unit
VTERM	Terminal Voltage with Respect to GND	0.5 to +7.0	0.5 to +7.0	V
TA	Operating Temperature	0 to +70	40 to +85	C
T-BIAS	Temperature Under Bias	55 to +155	55 to +155	C
T-STG	Storage Temperature	55 to +155	55 to +150	C
IOUT	DC Output Current	50	50	mA

IDT77301 Features

♦ Data transfers on fixed cell sizes
♦ Programmable cell size
♦ One input port to four output ports
♦ Four Independent output 128 x 9 FIFO Queues
♦ Selectable eighteen bit or nine bit input bus
♦ Selectable eight/nine bit or four bit output buses
♦ Programmable chip Identification
♦ "UtopiaTx" level 2 compliant input interface signaling
♦ "UtopiaTx" level 1 compliant output interface signaling
♦ Separate clocks for input and output
♦ Selectable In-band or Out-band routing
♦ Multicast capability
♦ Data clock rates to 62.5 MHz, 10ns access time
♦ Building Block Implementation allows up to 32 output channels with
a 18, 36 or 64-bit input bus
♦ Four 562 Mbps output channels can be derived from a single
1.1256 Gbps input channel with no additional glue logic
♦ 100-pin TQPF package

IDT77301 Connection Diagram

IDT77301 datasheet

IDT77301
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Datasheet: IDT77301
File Size: 351019 KB
Manufacturer: IDT
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The IDT77155 is a member of IDT's SWITCHStAR™ family of products for Asynchronous Transfer Mode (ATM) networks.The IDT77155 is a integrated circuit that provides the SONET/SDH processing and ATM mapping functions of a 155 Mbps/51 Mbps ATM User Network ...
IDT77105
The IDT77105 is a member of IDT's family of products developed to support Asynchronous Transfer Mode (ATM) data communications and networking. The IDT77105 provides the Transmission Convergence (TC) and (PMD) layers of a 25.6 Mbps ATM PHY suitable for ATM ne...
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