IDT77305 Datasheet | Integrated Device

UTOPIA.I.O™ 4-PORT (128 X 9 X 4) MULTIPLEXER-.I.O .eatures x x x x 1,6%%!# x x x x Four Independent Input 128 x9 FIFO Queues Nine bit wide input FIFOs Single selectable 9 or 18 bit output bus "Utopia Rx" or "Utopia Tx" Utopia pliant interface signaling options Separate clocks for input and output Selectable Automatic byte insertion for 8-bit Receive Utopia to 16bit Receive Utopia pliance Four 155Mbs ATM input channels can be consolidated into a single 622Mbs channel with no additional glue logic Maximum through put per device over 1.4Gbps x x x x x x x In a building block configuration multiple input channels can be multiplexed onto a 32, 64 or 128 bit bus. User programmable: - byte insert/delete, Utopia Tx/Utopia Rx mode, master/slave configuration, byte swapping Selectable Round Robin Sequencer output control Data clock rates to 80 MHz; access times 8.5 ns 100-pin TQPF package Separate cell ready signals for each FIFO and cell ready posite signal End of cell transfer flag .unctional Block Diagram CRn CRC ECT CSS RTS BDI CELL SIZE/CELL READY WCLK ROUND ROBIN SEQUENCER RRE RCLK MUX1 MUX2 LDM X 18 SWP FIFO CONTROLLER 128 BYTES FIFO ENR a CLAVR a SOCR a Data a (0 - 8) ENR b CLAVR b SOCR b Data b (0 - 8) ENR c CLAVR c SOCR c Data c (0 - 8) ENR d CLAVR d SOCR d Data d (0 - 8) FIFO CONTROLLER 128 BYTES FIFO XOE ENS CLAVS SOCS , FIFO CONTROLLER 128 BYTES FIFO Q0 - Q8 Q9 - Q17 FIFO CONTROLLER 128 BYTES FIFO BSS 3206 drw 01 MARCH 2001 ©2001 Integrated Device Technology, Inc. DSC-3206/3 IDT77305 Utopia FIFO™ 4 to 1 (128 x 9 x 4) Multiplexer-FIFO...