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 AssociationBitByte012::"Block Length" + 1or TLEN + 17 6 5 4 3 2 1 0Header(NP=1, Packet Type = DATA)PayloadHeaderPayloadFigure 6-14 : Basic DATA Format Payload: Data included with DATA. The length of payload is equal to Block Length in Block Mode and TLEN in Byte Mode. It is transmitted in LSB first, MSB last. For the individual byte, it is msb first, lsb last.6.2.2.8 Operation of Reserved Bits in the PacketThe following table indicates how each Node operates reserved bits in the packet.NodeInitiator (both Host andDevice)Device bypassing controlpacketDevice handling broadcastpacketOperationReserved bits shall be set to '0' other than in CMD_ECHO_BACKfieldReserved bits shall be ignored upon reception, and not to be set orcleared upon transmission.Reserved bits shall be ignored upon reception, and not to be set orcleared upon transmission.Table 6-5 : Operation for the Reserved Bits in the PacketHost should use Reserved bits considering the specification versions that all devices that exist in thering topology.54
UHS-II Simplified Addendum Version 1.01©Copyright 2010-2013 SD Card Association6.2.3 Supplements of UHS-II InitializationIn this section, supplements of UHS-II Initialization are described. Refer to Section 3.4 for the basicspecifications.Figure 6-15 shows UHS-II Initialization flow in case of recovery from Dormant state.Process nameOutline of processFrom Dormant StateDevice Initialization andEnumeration may be skippedwhen recovering fromDormant state.PHY Initialization• PLL Activation• Establishing synchronizationWakeup StateConfig StateIf "Config Completion" isequal to 1, this process isskipped and DLSM transitsdirectly to Active state.Configuration• Reading and Setting forCFG_REG"Config Completion"is set to 1Active StateFigure 6-15 : UHS-II Initialization Flow When Recovery from Dormant StateIf Device receives BSYN LSS after recovering from Dormant State, Device behavior is up toimplementation. Note that Host shall not transmit BSYN LSS after recovering from Dormant State.Both Device Initialization process and Enumeration process may be skipped when recovering fromDormant state, for whole functions of each Device and Node ID. If "Config Completion" is equal to 0,Configuration process can be done, but otherwise, that process is skipped and DLSM transits to Activestate.Figure 6-16 shows an example of Initialization flow in case of using Range B as a transmission speedrange (refer to Section 6.2.9.2.5 for more details).55
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SD Specifications Part 1 UHS-II Simplified Addendum - SD Association

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