PM7341 datasheet(9/413 Pages) PMC

9 / 413 page

PRELIMINARY

INVERSE MULTIPLEXING OVER ATM

PM7341 S/UNI-IMA-84

DATASHEET

PMC-2000223

ISSUE 4

INVERSE MULTIPLEXING OVER ATM

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

LIST OF FIGURES

FIGURE 1 - ATM EDGE SWITCH IMA AND UNI PORT CARD EXAMPLE ..... 33

FIGURE 2 - ATM MULTISERVICE SWITCH, ANY SERVICE ANY PORT CARD

EXAMPLE 34

FIGURE 3 - S/UNI-IMA-84 BLOCK DIAGRAM................................................ 35

FIGURE 4 - S/UNI-IMA PINOUT (BOTTOM VIEW)......................................... 40

FIGURE 5 - 16-BIT TRANSMIT CELL TRANSFER FORMAT ......................... 74

FIGURE 6 - 8-BIT TRANSMIT CELL TRANSFER FORMAT ........................... 74

FIGURE 7 - 16-BIT RECEIVE CELL TRANSFER FORMAT............................ 78

FIGURE 8 - 8-BIT RECEIVE CELL TRANSFER FORMAT.............................. 78

FIGURE 9 - INVERSE MULTIPLEXING .......................................................... 82

FIGURE 10- MAX DIFFERENTIAL DELAY TOLERANCE VS. SDRAM SIZE .. 88

FIGURE 11 - IFSM STATE MACHINE............................................................... 89

FIGURE 12- STUFF EVENT WITH ERRORED ICP (ADVANCED INDICATION)

FIGURE 13- INVALID STUFF SEQUENCE (ADVANCED INDICATION) ......... 91

FIGURE 14- ERRORED/INVALID ICP CELLS IN PROXIMITY TO A STUFF

EVENT

FIGURE 15- SNAPSHOT OF DCB BUFFERS ................................................. 93

FIGURE 16- SNAPSHOT OF DCB BUFFERS AFTER ADDITION OF LINK WITH

SMALLER TRANSPORT DELAY...................................................................... 94

FIGURE 17- SNAPSHOT OF DCB BUFFERS WHEN TRYING TO ADD LINK

WITH LARGER TRANSPORT DELAY.............................................................. 95

FIGURE 18- SNAPSHOT OF DCB BUFFERS AFTER DELAY ADJUSTMENT 96

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