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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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DP83256 데이터시트(PDF) 124 Page - Texas Instruments |
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DP83256 데이터시트(HTML) 124 Page - Texas Instruments |
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124 / 146 page  70 Electrical Characteristics (Continued) AC Characteristics for the PMD Interface Inputs (ANSI Specifications) The following input signals are covered PMD Indicate Data (PMID) Receive Data In (RXD IN) Receive Clock In (RXC IN) Note The Alternate PMD Interface is only available on the 160 pin DP83257 PLAYERa Device and the 100 pin DP83256-AP Device The Transmit Clock is enabled by the CGMREGTXCE bit The rest of the Alternate PMD Interface is enabled by the APMDREGAPMDEN bit All comments in square brackets are section references to the ANSI documents where these specifications can be found Symbol Parameter Conditions Min Typ Max Units T53 CRM Window Recognition Region PMD E2 b 33 ns (PMID Inputs) T54 PMID Receive Clock Tolerance PHY 524 b 100 100 ppm (Lock Acquisition Range) T55 Receive Clock Acquisition Time From 1st Data 100 m s and SD Active PHY 526 T56 Receive Clock Acquisition Time From Line State 15 m s Change PHY 526 TLF11708 – 54 TLF11708 – 55 FIGURE 7-13 Alternate PMD Input Timing DiagramsANSI Specifications 123 |
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