V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

CSR
       Cell misSequenced Ratio (ATM)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

CSR
       Cell Switch Router (Toshiba)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

CSR
       Certificate Signing Request (SSL)


The Free On-line Dictionary of Computing (30 December 2018):

Control and Status Register
CSR

    (CSR) A special register in most CPUs that
   stores additional information about the results of machine
   instructions, e.g. comparisons.  The CSR consists of
   several independent flag bits such as carry, overflow
   and zero.  The CSR is chiefly used to determine the outcome of
   conditional branch instructions or other forms of
   conditional execution.

   (2018-01-29)