SD Specifications Part 1 UHS-II Simplified Addendum - SD Association

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UHS-II Simplified Addendum Version 1.01©Copyright 2010-2013 SD Card Association4. Which state Dormant or Re-sync should be used is dependent on implementation ofAmplitude Detector especially on Device D1 Rx (Backward Loopback), Host D0 Rx(Backward Loopback) and Host D1 Rx (Forward Loopback).5. Device and Host may transmit a few broken symbols instead of COM+SYN symbolsexpected, on switching Loopback direction. PLL Multiplier factorPLL Multiplier factor may be set by the test mode entry method without setting configurationRegister. Change of PLL Multiplier is effective only when exiting Dormant or Re-Sync state. Future Test Mode ExpandabilityAdditional vendor specific Test Modes may be defined.24
UHS-II Simplified Addendum Version 1.01©Copyright 2010-2013 SD Card Association4.7.1 The Sequences used in PHY Test ModeFigure 4-19 shows the sequences used in PHY Test Mode. Test mode configuration is done by settingthe TMD1 and TMD2 in the symbol named "TEST-MODE" (which is constructed by COM (K28.5) + K-code (K30.7) + TMD1 + TMD2 as described in Figure 4-19). To avoid entering a test mode by mistake,TEST-MODE symbol is sent 4 times continuously.Sequence to Enter Dormant or Re-Sync- When necessary to change PLL multiplier, this sequence is usedAny SymbolDIF-H(STB.H)DIF-PDDIF-ZDormant or Re-SyncThe length of DIF-Z maybe 0 if no directionchange occurs.Test mode configurations shall be keptinternally even if UHS-II interface goesthrough Dormant or Re-Sync.Sequence to Exit Dormant or Re-Sync- When direction is switched, started by this sequence.- When necessary to change PLL multiplier, this sequence is usedDormant or Re-SyncDIF-ZDIF-PDDIF-L(STB.L)SYNThe length of DIF-Z maybe 0 if no directionchange occurs.Sequence to Set Test Mode- Before setting Test-Modes, re-synchronization should be performed by through Dormant or Re-Sync state.(Not necessary for every test mode setting.)SYNTEST-MODETEST-MODE TEST-MODE TEST-MODESYN4 timesCOM(K28.5)K-code(K30.7)TMD1TMD2It is necessary to enter Test modeor change Test mode configuration.Figure 4-19: Sequences used in PHY Test Mode25
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SD Specifications Part 1 UHS-II Simplified Addendum - SD Association

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