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PM73121 Datasheet(PDF) 119 Page - PMC-Sierra, Inc |
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PM73121 Datasheet(HTML) 119 Page - PMC-Sierra, Inc |
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119 / 223 page ![]() PMC-Sierra, Inc. PM73121 AAL1gator II PMC-980620 ,VVXH AAL1 SAR Processor Data Sheet QSPQSD@U6S`Ã6I9Ã8PIAD9@IUD6GÃUPÃQH8TD@SS6ÃDI8Ã6I9ÃAPSÃDUTÃ8VTUPH@ST¶ÃDIU@SI6GÃVT@ 6.4.3 RUTOPIA as the PHY Layer Device in Multi-PHY (MPHY) Mode The RUTOPIA block functions as a transmit UTOPIA block when in MPHY mode. The transmit MPHY UTOPIA timing signals are compatible with the UTOPIA Level 2 MPHY specification (refer to Appendix B, “References”, on page 203). Table 20 on page 101 indicates the transmit UTOPIA signal names and their corresponding UTOPIA designations. The AAL1gator II will not drive TPHY_CLAV unless /TPHY_ADDR was low the previous cycle. The value driven will be dependent on whether or not it has room for a complete cell. TPHY_DATA and TPHY_SOC are captured when /TPHY_EN is active and the AAL1gator II was selected. The AAL1gator II is selected only if /TPHY_ADDR is low and /TPHY_EN is high during one clock cyle, and /TPHY_ EN is asserted low in the following clock cycle. TPHY_SOC indicates the start of a new cell. If the current cell will fill the internal FIFO, then TPHY_CLAV will be deactivated the same cycle it is receiving the 49th byte of data if /TPHY_ADDR is low on the previous cycle. Figure 68 Figure 67. RUTOPIA SPHY Timing Symbol Parameter Signal Min Max Unit TPHY_CLK frequency 33 MHz Tdc TPHY_CLK duty cycle 45 55 % Thd TPHY_CLK hold time TPHY_DATA, TPHY_SOC, /TPHY_EN 1ns Tq TPHY_CLK-to-output delay TPHY_CLAV 12 ns Tsu TPHY_CLK setup time TPHY_DATA, TPHY_SOC, /TPHY_EN 5 ns D1 D2 D3 D4 Tdc Tdc Tsu Thd Tq TPHY_CLK(i) TPHY_CLAV(o) TPHY_DATA(i) TPHY_SOC(i) TPHY_EN(i) |
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