ACS ACR101, Reference Manual

Page: 10 / 19

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ACR101 PC/SC Memory Card Access
Version 1.0
Page 10 of 19
info@acs.com.hk
www.acs.com.hk
Offset Field Size Value Description
32 dwSynchProtocols 4 00000000h
The Smart card reader does
not support synchronous
card
36 dwMechanical 4 00000000h
The Smart card reader does
not support special
mechanical characteristics
40 dwFeatures 4 00010030h
The Smart card reader
supports the following
features:

Automatic ICC clock
frequency change
according to
parameters

Automatic baud rate
change according to
frequency and FI,DI
parameters

TPDU level
exchange with the
smart card reader
44
dwMaxCCIDMessageLeng
th
4 0000010Fh
Maximum message length
accepted by the smart card
reader is 271 bytes
48
bClassGetResponse
1 00h
Insignificant for TPDU level
exchanges
49 bClassEnvelope 1 00h
Insignificant for TPDU level
exchanges
50
wLCDLayout
2 0000h No LCD
52 bPINSupport 1 00h No PIN Verification
53
bMaxCCIDBusySlots
1 01h
Only 1 slot can be
simultaneously busy
7.1. Command to the ACR101 (CCID)
In a normal operation, the ACR101 (CCID) acts as a slave device with regards to the communication
between a computer and the reader. The communication is carried out in the form of successive
command-response exchanges. The computer transmits a command to the reader and receives a
response from the reader after the command has been executed. A new command can be transmitted
to the ACR101 (CCID) only after the response to the previous command has been received.
There are two cases where the reader transmits data without having received a command from the
computer, namely, the
Reset Message
of the reader and the
Card Status Message
.
7.1.1. CCID Command Pipe Bulk-OUT Messages
The ACR101 (CCID) shall follow the CCID
Bulk-OUT
Messages as specified in CCID section 4. In
addition, this specification defines some extended commands for operating additional features. This
section lists the CCID
Bulk-OUT
Messages to be supported by ACR101 (CCID).
7.1.1.1. PC_to_RDR_IccPowerOn
Activate the card slot and return ATR from the card.