SCM Microsystems SCL01X, Reference Manual

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SCL01X R
EFERENCE
M
ANUAL
29
5.4.1.3. CCID Error Codes
Extensive error codes are reported on many conditions during all CCID responses. Most of the
error messages are reported by the CCID appropriately. Some of the main error codes are:

HW_ERROR

XFR_PARITY_ERROR
The following sub-sections discuss when and why these error codes are returned:
5.4.1.3.1. HW_ERROR
This error code is returned when a hardware short circuit condition is detected, during
application of power to the card or if any other internal hardware error is detected. This error
code has been defined in the error code table 6.2-2
of the CCID specification.
5.4.1.3.2. XFR_PARITY_ERROR
This error code is returned when a parity error condition is detected. This error will be reported
in the response to a PC_to_RDR_XfrBlock message. This error code has been defined in the
error code table 6.2-2
of the CCID specification.
5.4.2. Automatic PPS
Automatic PPS is implemented in SCL01X
‘s firmware. This means that by default SCL01X
switches to the maximum communication speed indicated by the card during its selection.
Automatic PPS can be disabled using escape messages as explained later in this manual.
When Auto PPS is disabled (discussed in escape messages section) the reader works at the
default baud rate of 106kbps. In PC/SC 2.0 compliant driver an escape command has been
introduced to force baud rate.
The maximum speed supported by SCL01X is 848Kbps by default (with 254 bytes frame size).
Using escape messages as explained later in this manual it is possible to change this.