SPRUIV7B May 2022 – September 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
This section describes the sequences how to generate and control various kinds of SD transactions. SD transactions are classified into three cases:
(1) Transactions that do not use the DAT line.
(2) Transactions that use the DAT line only for the busy signal.
(3) Transactions that use the DAT line for transferring data.
In this specification the first and the second case's transactions are classified as "Transaction Control without Data Transfer using DAT Line", the third case's transaction is classified as "Transaction Control with Data Transfer using DAT Line". Refer to the latest SD Physical Layer Specification and SDIO Specification for more detail about SD commands specification.