ACS ACR 38 Reference Manual page 37

Response data format
SW1, SW2 = 90 00
H
ACR38 Reference Manual
Version 2.2 January 2008
A C R 3 8 S m a r t C a r d R e a d e r / W r i t e r
Header Status
01
H
if no error
H
Data length SW1 SW2
LEN
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