ADIN1100 Question

Question

Dear sir, 
 Does the ADIN1100 have the RMII timing specification? 
 thanks.

SMohammadi · Accepted Answer

Hi Tommy, 
 The standard does not define the measurement points for timing nor a test circuit. For ADIN1100, you can use device pins as the reference points. 
 
 The setup/hold times for the TXD[1:0] and TX_EN inputs 
 The &ldquo;setup/hold&rdquo; times (or the corresponding min/max clock to output delays) for the RXD[1:0], CRS_DV and RX_ER outputs 
 
 Should be measured at the corresponding ADIN1100 pins WRT the CLK_IN pin signal rise crossing at V CLK_IN p-p / 2. 
 
 An the same would apply to the measurements at the MAC side, i.e.; 
 
 The setup/hold times for the RXD[1:0], CRS_DV and RX_ER inputs 
 The &ldquo;setup/hold&rdquo; times (or the corresponding min/max clock to output delays) for the TXD[1:0] and TX_EN outputs 
 
 Should be measured at the corresponding MAC/Switch pins WRT the corresponding REF_CLK pin signal rise crossing at 1.4 V (or 1.5 V or V S p-p / 2 depending on the MAC. But it is unlikely that it is 1.4 V). 
 
 Regards, 
 Shazia)

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