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PM73121 Datasheet(PDF) 115 Page - PMC-Sierra, Inc

Part # PM73121
Description  AAL1 Segmentation And Reassembly Processor
PDF  223 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM73121 Datasheet(HTML) 115 Page - PMC-Sierra, Inc

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PMC-Sierra, Inc.
PM73121 AAL1gator II
PMC-980620
,VVXH
AAL1 SAR Processor
Data Sheet
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6.3.2
TUTOPIA as the PHY Layer Device in Single PHY (SPHY) Mode
The TUTOPIA block functions as a receive UTOPIA block when in SPHY mode. The receive
SPHY UTOPIA timing signals are compatible with the ATM Forum UTOPIA Level 1 cell-level
hand-shaking specification (refer to Appendix B, “References”, on page 203). Table 18 indicates
the AAL1gator II receive SPHY UTOPIA signal names and their corresponding UTOPIA desig-
nations. The AAL1gator II will not assert RPHY_CLAV unless it has a complete cell to send.
RPHY_DATA and RPHY_SOC are tristate, except for the cycles following ones in which
/RPHY_EN is active. RPHY_CLAV goes inactive one cycle after the last data byte has been out-
put. Figure 64 shows the data output timing for the TUTOPIA block in SPHY mode. The timing
parameters used in Figure 64 are defined in the table following the figure. All output timing
delays assume a loading of 50 pF. Refer to section 3.4 “Transmit UTOPIA Interface Block
(TUTOPIA)” on page 41 for additional information.
Table 18.
Receive Signal Names and Corresponding UTOPIA Designations
Signal Name
UTOPIA Name
/RPHY_ADDR
RxAddr
RPHY_DATA
RxData
RPHY_SOC
RxSOC
RPHY_CLAV
RxClav
/RPHY_EN
RxEnb*
RPHY_CLK
RxClk
Figure 64.
TUTOPIA SPHY Timing
D1
D2
D3
Thd
Tsu
Tdc
Tdc
Tq
Tq
Tq
RPHY_CLK(i)
RPHY_CLAV(o)
RPHY_SOC(o)
RPHY_DATA(o)
/RPHY_EN(i)



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