Advanced Card ACR100I User manual

Subject to change without prior notice [e-mail]
www.acs.com.hk
Reference Manual V1.00
ACR100I
SIMFlashII(CCID)
SIMFlashwithEmbeddedMIFARE®

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 2 of 20
Table of Contents
1.0. Introduction .............................................................................................................3
1.1. SIM-sized Smart Card Reader...............................................................................................3
1.2. Memory Storage Device........................................................................................................3
1.3. Contactless Feature...............................................................................................................3
1.4. Ease of Integration.................................................................................................................3
2.0. Features ...................................................................................................................4
3.0. System Block Diagram............................................................................................5
4.0. Power Supply...........................................................................................................6
4.1. Status LED.............................................................................................................................6
4.2. Embedded MIFARE Chip ......................................................................................................6
5.0. Smart Card Interface...............................................................................................7
5.1. Smart Card Power Supply VCC (C1) ....................................................................................7
5.2. Programming Voltage VPP (C6)............................................................................................7
5.3. Card Type Selection ..............................................................................................................7
5.4. Interface for Microcontroller-based Cards.............................................................................7
5.5. Card Tearing Protection.........................................................................................................7
6.0. USB Interface...........................................................................................................8
6.1. Communication Parameters..................................................................................................8
6.2. Endpoints...............................................................................................................................8
6.2.1. Smart Card Reader.......................................................................................................8
6.2.2. Mass Storage................................................................................................................8
7.0. Communication Protocol........................................................................................9
7.1. Command to the ACR100I...................................................................................................11
7.1.1. CCID Command Pipe Bulk-OUT Messages...............................................................11
7.1.2. CCID Bulk-IN Messages.............................................................................................15
7.1.3. Commands Accessed via PC_to_RDR_XfrBlock.......................................................17
7.2. Mass Storage.......................................................................................................................18
Appendix A. Supported Card Types..............................................................................19
Appendix B. Response Error Codes.............................................................................20
List of Figures
Figure 1 : ACR100I System Block Diagram...........................................................................................5

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 3 of 20
1.0.Introduction
ACR100I SIMFlash II (CCID) is not an average smart card reader. Its memory storage comes with
NAND flash memory for your high capacity data storage needs. This can be partitioned up to three
sections as desired by the user. The ACR100I SIMFlash II (CCID) also has an embedded MIFARE®
Classic (1K) chip for various contactless card functions, such as logical and physical access.
1.1. SIM-sized Smart Card Reader
With its steadfast support for ISO 7816 microprocessor smart cards, the
ACR100I SIMFlash II (CCID) is a powerful reader. It works with most
memory cards and microprocessor cards with the T=0 and T=1 protocol.
1.2. Memory Storage Device
Aside from its smart card reading ability, the ACR100I SIMFlash II (CCID)
is also a storage device. Users can now store personal files in a secured
way with the NAND flash onboard the ACR100I. Various options for
partitioning the flash drive are also available: Private/Security, Public and
CD-ROM/Autorun, and hidden areas are all accessible in the same device.
1.3. Contactless Feature
ACR100I SIMFlash II (CCID)’s embedded MIFARE Classic (1K) chip allows the reader to be used in
contactless applications – allowing flexibility in using the device in various functions.
1.4. Ease of Integration
With ACR100I SIMFlash II (CCID) being compliant with CCID (Chip/Smart Card Interface Devices)
and PC/SC standards, it is easier to integrate in a computer-based environment by eliminating driver
installation prior to use. In addition, ACR100I SIMFlash II (CCID) may now be used on mobile devices
running the Android™ platform with versions 3.1 and above.
With its wide array of features, ACR100I SIMFlash II (CCID) can be used in various application areas,
such as PKI (Public Key Infrastructure), network security and GSM management.

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 4 of 20
2.0.Features
•USB Combo Device – Works as a smart card reader and mass storage
•USB 2.0 High Speed Interface
•Plug and Play – CCID support brings utmost mobility
•Extractable USB Connector
•Smart Card Reader:
oSupports ISO 7816 Class A, B and C (5 V, 3 V, 1.8 V) SIM-sized cards
oSupports microprocessor cards with T=0 or T=1 protocol
oSupports memory cards using Synchronous Card APDU
oSupports Specification 11.11-compliant GSM cards
oSupports PPS (Protocol and Parameters Selection)
oFeatures Short Circuit Protection
•Application Programming Interface:
oSupports PC/SC
oSupports CT-API (through wrapper on top of PC/SC)
•Flash Drive:
oBuilt-in NAND flash memory
oMaximum of built-in 8 GB flash memory
oDivision of up to three partitions (Private/Security, Public and CD-ROM/Autorun, and
Hidden)
•Contactless Feature:
oEmbedded MIFARE Classic (1K) chip
•Supports Android™ 3.1 and above1
•Compliant with the following standards:
oISO 7816
oCE
oFCC
oVCCI
oPC/SC
oCCID
oMicrosoft® WHQL
oRoHS 2
oREACH
1PC/SC and CCID support are not applicable

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 5 of 20
3.0.System Block Diagram
The USB Hub Controller is the communication interface between the computer and the MCU of the
smart card and the flash memory via USB port connection. The flash memory is available for the end-
user to use as storage. In Windows Explorer, the device is detected as a removable disk. The
ACR100I is powered from the USB port without other external power supply.
Figure 1: ACR100I System Block Diagram
ACR100I
2 PORT
USB 2.0
Hub
Controller
Smart Card
Interface Circuit
Flash memory
Antenna for
MIFARE Chip
MIFARE Chip
SIM-sized
Smart Card
USB
Interface

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 6 of 20
4.0.Power Supply
The ACR100I requires a voltage of 5 V DC, 300 mA regulated power supply, and gets the power
supply from computer.
4.1. Status LED
Bicolor LED in front of the reader indicates the activation status of the smart card and flash memory
interface.
GREEN LED:
Flashing slowly (turns on 200 ms for every 2 seconds)
Indicates that the ACR100I is powered up and in the standby state. Either the smart card
has not been inserted or the smart card has not been powered up (if it is inserted).
Lighting up
Indicates power supply to the smart card is switched on, i.e., the smart card is activated.
Flashing quickly
Indicates there is a communication between ACR100I and smart card.
RED LED:
Lighting up
Indicates there is a communication between ACR100I and flash memory.
4.2. Embedded MIFARE Chip
The ACR100I has an embedded MIFARE Classic chip with a memory size of 1K.

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 7 of 20
5.0.Smart Card Interface
The interface between the ACR100I and the inserted smart card follows the specifications of ISO
7816-3.
5.1. Smart Card Power Supply VCC (C1)
The current consumption of the inserted card must not be higher than 50 mA.
5.2. Programming Voltage VPP (C6)
According to ISO 7816-3, the smart card contact C6 (VPP) supplies the programming voltage to the
smart card. Since all common smart cards in the market are EEPROM based and do not require the
provision of an external programming voltage, the contact C6 (VPP) has been implemented as a
normal control signal in the ACR100I. The electrical specifications of this contact are identical to those
of the single RST (at contact C2).
5.3. Card Type Selection
The controlling computer has to always select the card type through the proper command sent to the
ACR100I prior to activating the inserted card. This includes both the memory cards and MCU-based
cards. For MCU-based cards, the reader allows to select the preferred protocol, T=0 or T=1, however,
this selection is only accepted and carried out by the reader through the PPS when the card inserted
in the reader supports both protocol types. Whenever an MCU-based card supports only one protocol
type, T=0 or T=1, the reader automatically uses that protocol type, regardless of the protocol type
selected by the application.
5.4. Interface for Microcontroller-based Cards
For microcontroller-based smart cards, only the contacts C1 (VCC), C2 (RST), C3 (CLK), C5 (GND),
and C7 (I/O) are used. A frequency of 4 MHz is applied to the CLK signal (C3).
5.5. Card Tearing Protection
The ACR100I provides a mechanism to protect the inserted card when it is suddenly withdrawn while
it is powered up. The power supply to the card and the signal lines between the ACR100I and are
immediately deactivated when the card is being removed. As a rule, however, to avoid any electrical
damage, a card should only be removed from the reader while it is powered down.
Note: The ACR100I never switches on the power supply to the inserted card by itself. This must be
explicitly be done by controlling the computer through the proper command sent to the reader.

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 8 of 20
6.0.USB Interface
The connection of the ACR100I to a computer through a USB port follows a USB Standard.
6.1. Communication Parameters
The ACR100I is connected to a computer through USB as specified in the USB Specification 2.0. The
ACR100I is working in high-speed mode, i.e. 480 Mbps.
6.2. Endpoints
The ACR100I uses the following endpoints to communicate with the host computer.
6.2.1. Smart Card Reader
6.2.2. Mass Storage
Control
Endpoint For setup and control purpose
Bulk OUT For command to be sent from host to Device (data packet size is 512
bytes)
Bulk IN For response to be sent from Device to host (data packet size is 512
bytes)
Pin Signal Function
1 VBUS +5 V power supply for the reader (Max 500 mA, Normal 300 mA)
2 D- Differential signal transmits data between ACR100I and computer.
3 D+ Differential signal transmits data between ACR100I and computer.
4 GND Reference voltage level for power supply
Control
Endpoint For setup and control purpose
Bulk OUT For command to be sent from host to ACR100I (data packet size is 64
bytes).
Bulk IN For response to be sent from ACR100I to host (data packet size is 64
bytes).
Interrupt IN For card status message to be sent from ACR100I to host (data packet
size is 8 bytes).

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 9 of 20
7.0.Communication Protocol
ACR100I shall interface with the host through USB connection. A specification, namely CCID, has
been released within the industry defining such protocol for the USB chip-card interface devices.
CCID covers all the protocols required for operating smart cards and PIN.
The configurations and usage of USB endpoints on ACR100I shall follow CCID Section 3. An
overview is summarized below:
1. Control Commands are sent on a control pipe (default pipe). These include class-specific
requests and USB standard requests. Commands that are sent on the Default Pipe Report
Information back to the host on the default pipe.
2. CCID Events are sent on the interrupt pipe.
3. CCID Commands are sent on Bulk-OUT endpoint. Each command sent to ACR100I has an
associated ending response. Some commands can also have intermediate responses.
4. CCID Responses are sent on Bulk-IN endpoint. All commands sent to ACR100I have to be
sent synchronously. (i.e. bMaxCCIDBusySlots is equal to 1 for ACR100I)
The supported CCID features by ACR100I are indicated in its Class Descriptor:
Offset Field Size Value Description
0 bLength 1 36h Size of this descriptor, in bytes
1 bDescriptorType 1 21h CCID Functional Descriptor type
2 bcdCCID 2 0100h CCID S
pecification Release Number in
binary-coded decimal
4 bMaxSlotIndex 1 00h One slot is available on ACR100I
5 bVoltageSupport 1 07h ACR100I can supply 1.8 V, 3.0 V and 5.0
V to its slot
6 dwProtocols 4 00000003h ACR100I supports T=0 and T=1 Protocol
10 dwDefaultClock 4 00000FA0h Default ICC clock frequency is 4 MHz
14 dwMaximumClock 4 00000FA0h Maximum supported ICC clock frequency
is 4 MHz
18 bNumClockSupported 1 00h Does not support manual setting of clock
frequency
19 dwDataRate 4 00002A00h Default ICC I/O data rate is 10752 bps
23 dwMaxDataRate 4 0001F808h Maximum supported ICC I/O data rate is
250000 bps
27 bNumDataRatesSupported 1 00h Does not support manual setting of data
rates
28 dwMaxIFSD 4 00000Feh Maximum IFSD supported by ACR100I for
protocol T=1 is 254
32 dwSynchProtocols 4 00000000h ACR100I does not support synchronous
card
36 dwMechanical 4 00000000h
ACR100I does not support special
mechanical characteristics

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 10 of 20
Offset Field Size Value Description
40 dwFeatures 4 00010030h
ACR100I supports the following features:
•
Automatic ICC clock frequency
change according to parameters
•Automat
ic baud rate change
according to frequency and FI,DI
parameters
•
TPDU level exchange with
ACR100I
44 dwMaxCCIDMessageLength 4 0000010Fh
Maximum message length accepted by
ACR100I 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

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 11 of 20
7.1. Command to the ACR100I
7.1.1. CCID Command Pipe Bulk-OUT Messages
ACR100I 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 ACR100I.
7.1.1.1. PC_to_RDR_IccPowerOn
Activate the card slot and return ATR from the card
Offset Field Size Value Description
0 bMessageType 1 62h
1 dwLength 4 00000000h Size of extra bytes of this message
2 bSlot 1
Identifies the slot number for this
command
5 bSeq 1 Sequence number for command
6 bPowerSelect 1
Voltage that is applied to the ICC
00h – Automatic Voltage Selection
01h – 5 volts
02h – 3 volts
7 abRFU 2 Reserved for future use
The response to this message is the RDR_to_PC_DataBlock message and the data returned is the
Answer-To-Reset (ATR) data.
7.1.1.2. PC_to_RDR_IccPowerOff
Deactivate the card slot.
Offset Field Size Value Description
0 bMessageType 1 63h
1 dwLength 4 00000000h Size of extra bytes of this message
5 bSlot 1 Identifies the slot n
umber for this
command
6 bSeq 1 Sequence number for command
7 abRFU 3 Reserved for future use
The response to this message is the RDR_to_PC_SlotStatus message.
7.1.1.3. PC_to_RDR_GetSlotStatus
Gets the current status of the slot.
Offset Field Size Value Description
0 bMessageType 1 65h
1 dwLength 4 00000000h Size of extra bytes of this message
5 bSlot 1
Identifies the slot number for this
command
6 bSeq 1 Sequence number for command

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 12 of 20
Offset Field Size Value Description
7 abRFU 3 Reserved for future use
The response to this message is the RDR_to_PC_SlotStatus message.
7.1.1.4. PC_to_RDR_XfrBlock
Transfer data block to the ICC.
Offset Field Size Value Description
0 bMessageType 1 6Fh
1 dwLength 4
Size of abData field of this
message
5 bSlot 1 Identifies the slot number for this
command
6 bSeq 1 Sequence number for command
7 bBWI 1
Used to extend the CCIDs Block
Waiting Timeout for this current
transfer. The CCID will timeout the
block after “this number multiplied
by the Block Waiting Time” has
expired.
8 wLevelParameter 2 0000h RFU (TPDU exchange level)
10 abData Byte
array Data block sent to the CCID. Data
is sent “as is” to the ICC (TPDU
exchange level).
The response to this message is the RDR_to_PC_DataBlock message.
7.1.1.5. PC_to_RDR_GetParameters
Get slot parameters.
Offset Field Size Value Description
0 bMessageType 1 6Ch
1 DwLength 4 00000000h Size of extra bytes of this message
5 BSlot 1 Identifies the slot number for this
command
6 BSeq 1 Sequence number for command
7 AbRFU 3 Reserved for future use
The response to this message is the RDR_to_PC_Parameters message.
7.1.1.6. PC_to_RDR_ResetParameters
Reset slot parameters to default value.
Offset Field Size Value Description
0 bMessageType 1 6Dh
1 DwLength 4 00000000h Size of extra bytes of this message
5 BSlot 1 Identifies the slot
number for this
command

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 13 of 20
Offset Field Size Value Description
6 BSeq 1 Sequence number for command
7 AbRFU 3 Reserved for future use
The response to this message is the RDR_to_PC_Parameters message.
7.1.1.7. PC_to_RDR_SetParameters
Set slot parameters.
Offset Field Size Value Description
0 bMessageType 1 61h
1 dwLength 4 Size of extra bytes of this message
5 bSlot 1
Identifies the slot number for this
command
6 bSeq 1 Sequence number for command
7 bProtocolNum 1
Specifies what protocol data structure
it follows.
00h = Structure for protocol T=0
01h = Structure for protocol T=1
The following values are reserved for
future use.
80h = Structure for 2-wire protocol
81h = Structure for 3-wire protocol
82h = Structure for I2C protocol
8 abRFU 2 Reserved for future use
10 abProtocolDataStructure Byte
array Protocol Data Structure
Protocol Data Structure for Protocol T=0 (dwLength=00000005h)
Offset Field Size Value Description
10 bmFindexDindex 1
B7-4 – FI –
Index into the Table 7 in
ISO/IEC 7816-
3:1997 selecting a clock
rate conversion factor.
B3-0 – DI – Index into the Table 8 in
ISO/IEC 7816-
3:1997 selecting a baud
rate conversion factor.
11 bmTCCKST0 1
B0 – 0b, B7-2 – 000000b
B1 – Convention used (b1=0 for direct,
b1=1 for inverse)
Note: The CCID ignores this bit.
12 bGuardTimeT0 1 Extra Guardtime between two characters. Add 0 to 254 etu to the normal guardtime
of 12 etu. FFh is the same as 00h.
13 bWaitingIntegerT0 1 WI for T=0 used to define WWT

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 14 of 20
Offset Field Size Value Description
14 bClockStop 1
ICC Clock Stop Support
00h = Stopping the Clock is not allowed
01h = Stop with Clock signal Low
02h = Stop with Clock signal High
03h = Stop with Clock either High or Low
Protocol Data Structure for Protocol T=1 (dwLength=00000007h)
Offset Field Size Value Description
10 bmFindexDindex 1
B7-4 – FI – Index into the Ta
ble 7 in
ISO/IEC 7816-
3:1997 selecting a clock
rate conversion factor.
B3-0 – DI – Index into the Table 8 in
ISO/IEC 7816-
3:1997 selecting a baud
rate conversion factor.
11 BmTCCKST1 1
B7-2 – 000100b
B0 –
Checksum type (b0=0 for LRC,
b0=1 for CRC
B1 – Convention used (b1=0 for direct,
b1=1 for inverse)
Note: The CCID ignores this bit.
12 BGuardTimeT1 1 Extra Guardtime (0 to 254 etu between
two characters). If value is FFh, then
guardtime is reduced by 1 etu.
13 BWaitingIntegerT1 1 B7-4 = BWI values 0-9 valid
B3-0 = CWI values 0-Fh valid
14 bClockStop 1
ICC Clock Stop Support
00h = Stopping the Clock is not allowed
01h = Stop with Clock signal Low
02h = Stop with Clock signal High
03h = Stop with Clock either High or Low
15 bIFSC 1 Size of negotiated IFSC
16 bNadValue 1 00h Only support NAD = 00h
The response to this message is the RDR_to_PC_Parameters message.

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 15 of 20
7.1.2. CCID Bulk-IN Messages
The Bulk-IN messages are used in response to the Bulk-OUT messages. ACR100I shall follow the
CCID Bulk-IN Messages as specified in CCID Section 4. This section lists the CCID Bulk-IN
messages to be supported by ACR100I.
7.1.2.1. RDR_to_PC_DataBlock
This message is sent by ACR100I in response to PC_to_RDR_IccPowerOn, PC_to_RDR_XfrBlock
and PC_to_RDR_Secure messages.
Offset Field Size Value Description
0 bMessageType 1 80h Indicates that a data block is being sent
from the CCID
1 dwLength 4 Size of extra bytes of this message
5 bSlot 1 Same value as in Bulk-OUT message
6 bSeq 1 Same value as in Bulk-OUT message
7 bStatus 1 Slot status register as defined in CCID
Section 4.2.1
8 bError 1 Slot error register as defined in CCID Section 4.2.1 and its specifications in
Section 5.2.8
9 bChainParameter 1 00h RFU (TPDU exchange level)
10 AbData Byte
array This field contains the data returned
by the CCID
7.1.2.2. RDR_to_PC_SlotStatus
This message is sent by ACR100I in response to PC_to_RDR_IccPowerOff,
PC_to_RDR_GetSlotStatus, PC_to_RDR_Abort messages and class specific ABORT request.
Offset Field Size Value Description
0 bMessageType 1 81h
1 dwLength 4 00000000h Size of extra bytes of this message
5 bSlot 1 Same value as in Bulk-OUT message
6 bSeq 1 Same value as in Bulk-OUT message
7 bStatus 1
Slot status register as defined in
CCID Section 4.2.1
8 bError 1 Slot error register as defined in CCID Section 4.2.1 and its specifications in
Section 5.2.8
9 bClockStatus 1
Value =
00h Clock running
01h Clock stopped in state L
02h Clock stopped in state H
03h Clock stopped in an unknown
state
All other values are RFU.

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 16 of 20
7.1.2.3. RDR_to_PC_Parameters
This message is sent by ACR100I in response to PC_to_RDR_GetParameters,
PC_to_RDR_ResetParameters and PC_to_RDR_SetParameters messages
Offset Field Size Value Description
0 bMessageType 1 82h
1 dwLength 4 Size of extra bytes of this message
5 bSlot 1 Same value as in Bulk-OUT message
6 bSeq 1 Same value as in Bulk-OUT message
7 bStatus 1 Slot status register as defined in CCID
Section 4.2.1
8 bError 1 Slot error register as define
d in CCID
Section 4.2.1 and its specification in
Section 5.2.8
9 bProtocolNum 1
Specifies what protocol data structure
follows.
00h = Structure for protocol T=0
01h = Structure for protocol T=1
The following values are reserved for
future use.
80h = Structure for 2-wire protocol
81h = Structure for 3-wire protocol
82h = Structure for I2C protocol
10 abProtocolDataSt
ructure Byte
array Protocol Data Structure as summarized
in Section 5.2.3.

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 17 of 20
7.1.3. Commands Accessed via PC_to_RDR_XfrBlock
7.1.3.1. GET_READER_INFORMATION
This command returns relevant information about the particular ACR100I model and the current
operating status, such as the firmware version number; the maximum data length of a command and
response; the supported card types; and whether a card is inserted and powered up or not.
Note: This command can only be used after the logical smart card reader communication has been
established using the SCardConnect() API. For details of SCardConnect() API, please refer to PC/SC
specifications.
Command format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS P1 P2 Lc
FFh 09h 00h 00h 10h
Response data format (abData field in the RDR_to_PC_DataBlock)
FIRMWARE MAX_C MAX_R C_TYPE C_SEL C_STAT
FIRMWARE 10 bytes data for firmware version
MAX_C The maximum number of command data bytes.
MAX_R The maximum number of data bytes that can be requested to be transmitted in a
response.
C_TYPE The card types supported by the ACR100I. This data field is a bitmap with each bit
representing a particular card type. A bit set to '1' means the corresponding card type
is supported by the reader and can be selected with the SELECT_CARD_TYPE
command. The bit assignment is as follows:
Byte
1 2
card type
F E D C B A 9 8 7 6 5 4 3 2 1 0
See Appendix A for the correspondence between these bits and the respective card
types.

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 18 of 20
C_SEL The currently selected card type. A value of 00h means that no card type has been
selected.
C_STAT Indicates whether a card is physically inserted in the reader and whether the card is
powered up:
00h: no card inserted
01h: card inserted, not powered up
03h: card powered up
7.2. Mass Storage
Mass Storage Device Class specifies all protocols required for data transaction between the Host
(computer) and storage devices. The configurations and usage of USB endpoints on ACR100I shall
follow Mass Storage Class Bulk-Only Transport in Section 3 (Protocol Code) of the USB Mass
Storage Device Specification. This document is available at: www.usb.org.
An overview of this specification is summarized below:
1. Control Commands are sent on control pipe (default pipe). It is shared with the CCID
interface.
2. Data-Out Command Protocol uses the Bulk-OUT endpoint to transfer data from the host to
the device.
3. Data-In Command Protocol uses the Bulk-IN endpoint to transfer data from the device or to
return status about the device.

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 19 of 20
Appendix A. Supported Card Types
The following table is a list of the card types returned by GET_READER_INFORMATION
corresponding with the respective card type code:
Card type code Card Type
00h Auto-select T=0 or T=1 communication protocol
01h I2C memory card (1, 2, 4, 8 and 16 kilobits)
02h I2C memory card (32, 64, 128, 256, 512 and 1024 kilobits)
03h Atmel® AT88SC153 secure memory card
04h Atmel® AT88SC1608 secure memory card
05h Infineon® SLE4418 and SLE4428
06h Infineon® SLE4432 and SLE4442
07h Infineon® SLE4406, SLE4436 and SLE5536
08h Infineon® SLE4404
09h Atmel® AT88SC101, AT88SC102 and AT88SC1003
0Ch MCU-based cards with T=0 communication protocol
0Dh MCU-based cards with T=1 communication protocol

ACR100I – Reference Manual [e-mail]
Version 1.00 www.acs.com.hk
Page 20 of 20
Appendix B. Response Error Codes
The following table summarizes the possible error code returned by ACR100I:
Error Code Status
FFh SLOTERROR_CMD_ABORTED
FEh SLOTERROR_ICC_MUTE
FDh SLOTERROR_XFR_PARITY_ERROR
FCh SLOTERROR_XFR_OVERRUN
FBh SLOTERROR_HW_ERROR
F8h SLOTERROR_BAD_ATR_TS
F7h SLOTERROR_BAD_ATR_TCK
F6h SLOTERROR_ICC_PROTOCOL_NOT_SUPPORTED
F5h SLOTERROR_ICC_CLASS_NOT_SUPPORTED
F4h SLOTERROR_PROCEDURE_BYTE_CONFLICE
F3h SLOTERROR_DEACTIVATED_PROTOCOL
F2h SLOTERROR_BUSY_WITH_AUTO_SEQUENCE
E0h SLOTERROR_CMD_SLOT_BUSY
Android is a trademark of Google Inc.
Atmel is registered trademark of Atmel Corporation or its subsidiaries, in the US and/or other countries.
Infineon is a registered trademark of Infineon Technologies AG.
Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries.
Microsoft is a registered trademark of Microsoft Corporation in the United States and/or other countries.
MIFARE and MIFARE Classic are registered trademarks of NXP B.V. and are used under license.