ACS AET62 User manual

Reference Manual
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AET62
NFC Reader

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Table of Contents
1. Introduction ...........................................................................................................................................................4
2. AET62 Contactless Smart Card Reader..............................................................................................................5
2.1. USB Interface..................................................................................................................................................5
3. Implementation......................................................................................................................................................6
3.1. Communication Flow Chart of AET62..........................................................................................................6
3.2. Smart Card Reader Interface Overview .......................................................................................................6
4. PICC Interface Description...................................................................................................................................7
4.1. ATR Generation...............................................................................................................................................7
4.1.1. ATR format for ISO 14443 Part 3 PICCs......................................................................................................7
4.1.2. ATR format for ISO 14443 Part 4 PICCs......................................................................................................8
5. PICC Commands for General Purposes .............................................................................................................9
5.1. Get Data...........................................................................................................................................................9
6. PICC Commands (T=CL Emulation) for Mifare Classic Memory Cards.........................................................10
6.1. Load Authentication Keys...........................................................................................................................10
6.2. Authentication..............................................................................................................................................11
6.3. Read Binary Blocks .....................................................................................................................................14
6.4. Update Binary Blocks..................................................................................................................................15
6.5. Value Block Related Commands................................................................................................................16
6.5.1. Value Block Operation................................................................................................................................16
6.5.2. Read Value Block.......................................................................................................................................16
6.5.3. Restore Value Block...................................................................................................................................17
7. Pseudo-APDUs....................................................................................................................................................19
7.1. Direct Transmit.............................................................................................................................................19
7.2. Bi-Color LED Control...................................................................................................................................19
7.3. Get the Firmware Version of the reader ....................................................................................................20
7.4. Get the PICC Operating Parameter ............................................................................................................20
7.5. Set the PICC Operating Parameter.............................................................................................................21
8. Basic Program Flow for Contactless Applications..........................................................................................22
8.1. How to Access PCSC-Compliant Tags (ISO 14443-4)?............................................................................23
8.2. How to Access DESFire Tags (ISO 14443-4)?...........................................................................................24
8.3. How to Access FeliCa Tags (ISO 18092)? .................................................................................................25
8.4. How to Access NFC Forum Type 1 Tags (ISO 18092), e.g. Jewel and Topaz Tags? ............................25
9. Appendix A. AET62 PCSC Escape Command..................................................................................................29
10. Appendix B. APDU Command and Response Flow for ISO 14443-Compliant Tags....................................32
11. Appendix C. APDU Command and Response Flow for ISO 18092-Compliant Tags....................................33
12. Appendix E. Sample Codes for Setting the LED..............................................................................................35
Figures
Figure 1: AET 62 System Block Diagramm ........................................................................................................................... 4
Figure 2: Communication Flow Chart of AET62 .................................................................................................................... 6
Figure 3: Basic Program Flow for Contactless Applications................................................................................................ 22
Tables
Table 1: USB Interface........................................................................................................................................................... 5
Table 2: ATR format for ISO 14443 Part 3 PICCs................................................................................................................. 7
Table 3: ATR format for ISO 14443 Part 4 PICCs................................................................................................................. 8
Table 4: Get UID APDU Format (5 Bytes)............................................................................................................................. 9
Table 5: Get UID Response Format (UID + 2 Bytes) if P1 = 0x00 ........................................................................................ 9
Table 6: Get ATS of a ISO 14443 A card (ATS + 2 Bytes) if P1 = 0x01................................................................................9
Table 7: Response Codes...................................................................................................................................................... 9

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Table 8: Load Authentication Keys APDU Format (11 Bytes) .............................................................................................10
Table 9: Load Authentication Keys Response Format (2 Bytes).........................................................................................10
Table 10: Load Authentication Keys Response Codes .......................................................................................................10
Table 11: Load Authentication Keys APDU Format (6 Bytes) [Obsolete]............................................................................ 11
Table 12: Load Authentication Keys APDU Format (10 Bytes)...........................................................................................11
Table 13: Authenticate Data Bytes (5 Byte).........................................................................................................................11
Table 14: Load Authentication Keys Response Format (2 Bytes).......................................................................................11
Table 15: Load Authentication Keys Response Codes .......................................................................................................11
Table 16: Read Binary APDU Format (5 Bytes) ..................................................................................................................14
Table 17: Read Binary Block Response Format (N + 2 Bytes) ...........................................................................................14
Table 18: Read Binary Block Response Codes...................................................................................................................14
Table 19: Update Binary APDU Format (4 or 16 + 5 Bytes)................................................................................................15
Table 20: Update Binary Block Response Codes (2 Bytes) ................................................................................................15
Table 21: Value Block Operation APDU Format (10 Bytes) ................................................................................................16
Table 22: Value Block Operation Response Format (2 Bytes)............................................................................................16
Table 23: Value Block Operation Response Codes.............................................................................................................16
Table 24: Read Value Block APDU Format (5 Bytes)..........................................................................................................16
Table 25: Read Value Block Response Format (4 + 2 Bytes).............................................................................................17
Table 26: Read Value Block Response Codes....................................................................................................................17
Table 27: Restore Value Block APDU Format (7 Bytes) .....................................................................................................17
Table 28: Restore Value Block Response Format (2 Bytes) ...............................................................................................17
Table 29: Restore Value Block Response Codes................................................................................................................17
Table 30: Direct Transmit Command Format (Length of the Payload + 5 Bytes)................................................................19
Table 31: Direct Transmit Response Format.......................................................................................................................19
Table 32: Bi-Color LED Control Command Format (9 Bytes)..............................................................................................19
Table 33: Bi-Color LED Control Format (1 Byte) ................................................................................................................. 19
Table 34: Bi-Color LED Blinking Duration Control Format (4 Bytes)...................................................................................20
Table 35: Status Code ......................................................................................................................................................... 20
Table 36: Current LED State (1 Byte)..................................................................................................................................20
Table 37: Command Format (5 Bytes).................................................................................................................................20
Table 38: Response Format (10 bytes) ...............................................................................................................................20
Table 39: Command Format (5 Bytes).................................................................................................................................20
Table 40: Response Format (1 byte)...................................................................................................................................20
Table 41: Command Format (5 Bytes).................................................................................................................................21
Table 42: Response Format (1 byte)...................................................................................................................................21
Table 43: PICC Operating Parameter. Default Value = FF..................................................................................................21
Table 44: ISO 7816-4 APDU Format ................................................................................................................................... 23
Table 45: ISO 7816-4 Response Format (Data + 2 Bytes)..................................................................................................23
Table 46: Common ISO 7816-4 Response Codes ..............................................................................................................23

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1. Introduction
The AET62 is a composite device, consisting ACS’ ACR122U NFC Reader’s core and UPEK’s swipe fingerprint sensor.
The NFC contactless smart card reader and the fingerprint sensor can be used independently, but combining the two
technologies provide a higher level of security in applications.
The AET62’s system diagram is shown below:
Figure 1: AET 62 System Block Diagramm
The purpose of this document is to describe the architecture and interface of AET62’s contactless smart card reader
module, which is based on the ACR122U core. For information on the architecture and programming interface of the
fingerprint module, please refer to the AET62 Fingerprint Reader Application Programming Interface document
(API_AET62_v1.0).

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2. AET62 Contactless Smart Card Reader
The AET62 is a PC-linked contactless smart card reader/writer used for accessing ISO14443-4 Type A and B, Mifare,
ISO 18092 or NFC, and FeliCa tags. The AET62 Smart Card Reader is PCSCcompliant so it is compatible with existing
PCSC applications. Furthermore, the standard Microsoft CCID driver is used to simplify driver installation.
The AET62 serves as the mediating device between the personal computer and the contactless tag via the USB
interface. The reader carries out the command issued from the PC, whether the command is used in order to
communicate with a contactless tag or control the device peripherals (i.e. bi-color LED).
The AET62 uses the PCSC APDUs for contactless tags following the PCSC Specification and makes use of pseudo
APDUs in sending commands for ISO 18092 tags and controlling the device peripherals. This document will discuss how
you can use the AET62 in your smart card system.
2.1. USB Interface
The AET62 is connected to a computer through USB as specified in the USB Specification 1.1. The AET62 is working in
Full speed mode, i.e. 12 Mbps.
Pin
Signal
Function
1
V
BUS
+5V power supply for the reader (Max 200 mA, Normal 100 mA)
2
D
-
Differential signal transmits data between AET62 and PC.
3
D+
Differential signal transmits data between AET62 and PC.
4
GND
Reference voltage level for power supply
Table 1: USB Interface

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3. Implementation
3.1. Communication Flow Chart of AET62
The Standard Microsoft CCID and PCSC drivers are used. Therefore, no ACS drivers are required because the drivers
are already built inside the windows operating system. You need to modify your computer’s registry settings to be able to
use the full capabilities of the AET62 NFC Reader. See AET62 PCSC Escape Command for more details.
Figure 2: Communication Flow Chart of AET62
3.2. Smart Card Reader Interface Overview
Just click the “Device Manager” to find out the “AET62 PICC Interface”. The standard Microsoft USB CCID Driver is used.

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4. PICC Interface Description
4.1. ATR Generation
If the reader detects a PICC, an ATR will be sent to the PCSC driver to identify the PICC.
4.1.1. ATR format for ISO 14443 Part 3 PICCs
Byte Value
(Hex) Designation Description
0 3B Initial Header
1 8N T0 Higher nibble 8 means: no TA1, TB1, TC1 only TD1 is following.
Lower nibble N is the number of historical bytes (HistByte 0 to HistByte N-1)
2 80 TD1 Higher nibble 8 means: no TA2, TB2, TC2 only TD2 is following.
Lower nibble 0 means T = 0
3 01 TD Higher nibble 0 means no TA3, TB3, TC3, TD3 following.
Lower nibble 1 means T = 1
4
To
3+N
80 T1 Category indicator byte, 80 means A status indicator may be present in an optional COMPACT-TLV data
object
4F Tk Application identifier Presence Indicator
0C Length
RID Registered Application Provider Identifier
(RID) # A0 00 00 03 06
SS Byte for standard
C0…C1 Bytes for card name
00 00 00 00 RFU RFU # 00 00 00 00
4+N UU TCK Exclusive-oring of all the bytes T0 to Tk
Table 2: ATR format for ISO 14443 Part 3 PICCs
Example: ATR for MIfare 1K = {3B 8F 80 01 80 4F 0C A0 00 00 03 06 03 00 01 00 00 00 00 6A}
ATR
Initial Header T0 TD1 TD2 T1 Tk Length RID Standard Card Name RFU RCK
3B 8F 80 01 80 4F 0C A0 00 00 03
06 03 00 01 00 00 00 00 6A
Where: Length (YY) = 0C
RID = A0 00 00 03 06 (PC/SC Workgroup)
Standard (SS) = 03 (ISO14443A, Part 3)
Card Name (C0 .. C1) = [00 01] (Mifare 1K)
Where, Card Name (C0 .. C1)
00 01: Mifare 1K
00 02: Mifare 4K
00 03: Mifare Ultralight
00 26: Mifare Mini
….
F0 04: Topaz and Jewel
F0 11: FeliCa 212K
F0 12: FeliCa 424K
…
FF [SAK]: Undefined

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4.1.2. ATR format for ISO 14443 Part 4 PICCs
Byte
Value
(Hex) Designation Description
0 3B Initial Header
1 8N T0 Higher nibble 8 means: no TA1, TB1, TC1 only TD1 is following.
Lower nibble N is the number of historical bytes (HistByte 0 to HistByte N-1)
2 80 TD1 Higher nibble 8 means: no TA2, TB2, TC2 only TD2 is following.
Lower nibble 0 means T = 0
3 01 TD2 Higher nibble 0 means no TA3, TB3, TC3, TD3 following.
Lower nibble 1 means T = 1
4
to
3+N
XX T1 Historical Bytes:
ISO14443A:
The historical bytes from ATS response. Refer to the ISO14443-4
specification.
ISO14443B:
The higher layer response from the ATTRIB response (ATQB). Refer to the
ISO14443-3 specification.
XX
XX
XX
Tk
4+N UU TCK Exclusive-oring of all the bytes T0 to Tk
Table 3: ATR format for ISO 14443 Part 4 PICCs
We take for example, an ATR for DESFire which is:
DESFire (ATR) = 3B 86 80 01 06 75 77 81 02 80 00
ATR
Initial Header T0 TD1 TD2 ATS
T1 Tk TCK
3B 86 80 01 06 75 77 81 02 80 00
This ATR has 6 bytes of ATS which is: [06 75 77 81 02 80]
Note: Use the APDU “FF CA 01 00 00” to distinguish the ISO14443A-4 and ISO14443B-4
PICCs, and retrieve the full ATS if available. The ATS is returned for ISO14443A-3 or
ISO14443B-3/4 PICCs.
Another example would be the ATR for ST19XRC8E which is:
ST19XRC8E (ATR) = 3B 8C 80 01 50 12 23 45 56 12 53 54 4E 33 81 C3 55
ATR
Initial Header T0 TD1 TD2 ATS
T1 Tk TCK
3B 86 80 01 50 12 23 45 56 12 5 54 4E 33 81 C3 55
Since this card follows ISO 14443 Type B, the response would be ATQB which is 50 12 23 45 56 12
53 54 4E 33 81 C3 is 12 bytes long with no CRC-B
Note: You can refer to the ISO7816, ISO14443 and PCSC standards for more details.

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5. PICC Commands for General Purposes
5.1. Get Data
The “Get Data command” will return the serial number or ATS of the “connected PICC”.
Version 1.00
Command
Class
INS
P1
P2
Le
Get Data
FF CA 00 01 00 00
(Full
Length)
Table 4: Get UID APDU Format (5 Bytes)
Response
Data Out
Result UID
(LSB)
UID
(MSB)
SW1 SW2
Table 5: Get UID Response Format (UID + 2 Bytes) if P1 = 0x00
Response
Data Out
Result ATS SW1 SW2
Table 6: Get ATS of a ISO 14443 A card (ATS + 2 Bytes) if P1 = 0x01
Results
SW1
SW2
Meaning
Success 90 00 The operation is completed
successfully.
Error 63 00 The operation is failed.
Error 6A 81 Function not supported.
Table 7: Response Codes
Example:
1. To get the serial number of the “connected PICC”
UINT8 GET_UID[5]={0xFF, 0xCA, 0x00, 0x00, 0x04};
2. To get the ATS of the “connected ISO 14443 A PICC”
UINT8 GET_ATS[5]={0xFF, 0xCA, 0x01, 0x00, 0x04};

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6. PICC Commands (T=CL Emulation) for Mifare Classic Memory Cards
6.1. Load Authentication Keys
The “Load Authentication Keys command” will load the authentication keys into the reader. The authentication keys are
used to authenticate the particular sector of the Mifare 1K/4K Memory Card. Two kinds of authentication key locations are
provided, volatile and non-volatile key locations respectively.
Command
Class INS P1 P2 Lc Data In
Load
Authentication
Keys
FF 82 Key
Structure
Key
Number 06 Key (6 bytes)
Table 8: Load Authentication Keys APDU Format (11 Bytes)
Key Structure (1 Byte):
0x00 = Key is loaded into the reader volatile memory.
Other = Reserved.
Key Number (1 Byte):
0x00 ~ 0x01 = Key Location. The keys will disappear once the reader is disconnected from the PC.
Key (6 Bytes):
The key value loaded into the reader. E.g. {FF FF FF FF FF FF}
Response
Data Out
Result SW1 SW2
Table 9: Load Authentication Keys Response Format (2 Bytes)
Results
SW1
SW2
Meaning
Success 90 00 The operation is completed successfully.
Success 63 00 The operation is failed.
Table 10: Load Authentication Keys Response Codes
Example:
Load a key { FF FF FF FF FF FF } into the key location 0x00 .
APDU = { FF 82 00 00 06 FF FF FF FF FF FF }

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6.2. Authentication
The “Authentication command” uses the keys stored in the reader to execute authentication with the
Mifare 1K/4K card (PICC). Two types of authentication keys are used: TYPE_A and TYPE_B.
Command
Class
INS
P1
P2
P3
Data In
Authentication
FF 88 00 Block Number Key Type Key Number
Table 11: Load Authentication Keys APDU Format (6 Bytes) [Obsolete]
Command
Class
INS
P1
P2
Lc
Data In
Authentication
FF 86 00 00 05 Authenticate Data Bytes
Table 12: Load Authentication Keys APDU Format (10 Bytes)
Byte1
Byte2
Byte3
Byte4
Byte5
Version 0x01 0x00 Block Number Key Type
Key Number
Table 13: Authenticate Data Bytes (5 Byte)
Block Number: 1 Byte. This is the memory block to be authenticated.
Key Type : 1 Byte
0x60 = Key is used as a TYPE A key for authentication.
0x61 = Key is used as a TYPE B key for authentication.
Key Number : 1 Byte
0x00 ~ 0x1F = Key Location.
Note: For Mifare 1K Card, there are 16 sectors and each sector consists of 4 consecutive blocks. E.g. Sector 0x00
consists of Blocks {0x00, 0x01, 0x02 and 0x03}; Sector 0x01 consists of Blocks {0x04, 0x05, 0x06 and
0x07}; the last sector 0x0F consists of Blocks {0x3C, 0x3D, 0x3E and 0x3F}.
Once the authentication is executed successfully, there is no need to execute the authentication again provided that the
blocks to be accessed are belonging to the same sector. Please refer to the Mifare 1K/4K specification for more details.
Response
Data Out
Result SW1 SW2
Table 14: Load Authentication Keys Response Format (2 Bytes)
Results
SW1
SW2
Meaning
Success 90 00
The operation is completed successfully.
Error 63 00
The operation is failed.
Table 15: Load Authentication Keys Response Codes

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Mifare 1K Memory Map.
Sectors
(Total 16 sectors. Each sector
consists of 4 consecutive blocks)
Data Blocks
(3 blocks, 16 bytes per
block)
Trailer Block
(1 block, 16 bytes)
Sector 0 0x00 ~ 0x02 0x03
Sector 1
0x04 ~ 0x06
0x07
…
…
Sector 14
0x38 ~ 0x0A
0x3B
Sector 15
0x3C ~ 0x3E
0x3F
Mifare 4K Memory Map.
Sectors
(Total 32 sectors. Each sector
consists of 4 consecutive blocks)
Data Blocks
(3 blocks, 16 bytes per
block)
Trailer Block
(1 block, 16 bytes)
Sector 0 0x00 ~ 0x02 0x03
Sector 1
0x04 ~ 0x06
0x07
…
…
Sector 30
0x78 ~ 0x7A
0x7B
Sector 31
0x7C ~ 0x7E
0x7F
Sectors
(Total 8 sectors. Each sector
consists of 16 consecutive blocks)
Data Blocks
(15 blocks, 16 bytes per
block)
Trailer Block
(1 block, 16 bytes)
Sector 32 0x80 ~ 0x8E 0x03
Sector 33
0x90 ~ 0x9E
0x07
…
…
Sector 38
0xE0 ~ 0xEE
0x7B
Sector 39
0xF0 ~ 0xFE
0x7F
Mifare Ultralight Memory Map.
Byte Number
0
1
2
3
Page
Serial Number SN0 SN1 SN2 BCC0 0
Serial Number SN3 SN4 SN5 SN6 1
Internal/Lock BCC1 Internal Lock0 Lock1 2
OTP OPT0 OPT1 OPT2 OPT3 3
Data read/write
Data0 Data1 Data2 Data3 4
Data read/write
Data4 Data5 Data6 Data7 5
Data read/write
Data8 Data9 Data10 Data11 6
Data read/write
Data12 Data13 Data14 Data15 7
Data read/write
Data16 Data17 Data18 Data19 8
Data read/write
Data20 Data21 Data22 Data23 9
Data read/write
Data24 Data25 Data26 Data27 10
Data read/write
Data28 Data29 Data30 Data31 11
Data read/write
Data32 Data33 Data34 Data35 12
Data read/write
Data36 Data37 Data38 Data39 13
Data read/write
Data40 Data41 Data42 Data43 14
Data read/write
Data44 Data45 Data46 Data47 15
1K
Bytes
2K
Bytes
2K
Bytes
512 bits
or
64 Bytes

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Example:
1. To authenticate the Block 0x04 with a {TYPE A, key number 0x00}. For PC/SC V2.01, Obsolete.
APDU = {FF 88 00 04 60 00};
2. To authenticate the Block 0x04 with a {TYPE A, key number 0x00}. For PC/SC V2.07
alaAPDU = {FF 86 00 00 05 01 00 04 60 00}
Note: Mifare Ultralight does not need to execute any authentication. The memory is free to access.

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6.3. Read Binary Blocks
The “Read Binary Blocks command” is used for retrieving “data blocks” from the PICC. The data block/trailer block must
be authenticated first.
Command
Class
INS
P1
P2
Le
Read Binary Blocks FF B0 00 Block Number Number of Bytes to Read
Table 16: Read Binary APDU Format (5 Bytes)
where:
Block Number (1 Byte): The block to be accessed
Number of Bytes to Read (1 Byte): Maximum 16 bytes
Response
Data Out
Result 0 <= N <= 16 SW1 SW2
Table 17: Read Binary Block Response Format (N + 2 Bytes)
Results
SW1
SW2
Meaning
Success 90 00 The operation completed successfully.
Error 63 00 The operation failed.
Table 18: Read Binary Block Response Codes
Example:
1. Read 16 bytes from the binary block 0x04 (Mifare 1K or 4K)
APDU = {FF B0 00 04 10}
2. Read 4 bytes from the binary Page 0x04 (Mifare Ultralight)
APDU = {FF B0 00 04 04}
3. Read 16 bytes starting from the binary Page 0x04 (Mifare Ultralight) (Pages 4, 5, 6 and 7 will be read)
APDU = {FF B0 00 04 10}

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6.4. Update Binary Blocks
The “Update Binary Blocks command” is used for writing “data blocks” into the PICC. The data block/trailer block must be
authenticated.
Command
Class
INS
P1
P2
Lc
Data In
Update
Binary
Blocks
FF 06 00 Block Number Number
of
Bytes
to
Update
Block Data
4 Bytes for
Mifare
Ultralight
or
16 Bytes for
Mifare 1K/4K
Table 19: Update Binary APDU Format (4 or 16 + 5 Bytes)
where:
Block Number (1 Byte):The starting block to be updated.
Number of Bytes to Update (1 Byte):
16 bytes for Mifare 1K/4K
4 bytes for Mifare Ultralight.
Block Data (4 or 16 Bytes):
The data to be written into the binary block/blocks.
Results
SW1
SW2
Meaning
Success 90 00 The operation completed successfully.
Error 63 00 The operation failed.
Table 20: Update Binary Block Response Codes (2 Bytes)
Example:
1. Update the binary block 0x04 of Mifare 1K/4K with Data {00 01 .. 0F}
APDU = {FF D6 00 04 10 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F}
2. Update the binary block 0x04 of Mifare Ultralight with Data {00 01 02 03}
APDU = {FF D6 00 04 04 00 01 02 03}

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6.5. Value Block Related Commands
The data block can be used as value block for implementing value-based applications.
6.5.1. Value Block Operation
The “Value Block Operation command” is used for manipulating value-based transactions. E.g. Increment a value of the
value block etc.
Command
Class
INS
P1
P2
Lc
Data In
Value
Block
Operation
FF D7 00
Block
Number
05
VB_OP
VB_Value
(4 Bytes)
{MSB .. LSB}
Table 21: Value Block Operation APDU Format (10 Bytes)
Block Number (1 Byte): The value block to be manipulated.
VB_OP (1 Byte):
0x00 = Store the VB_Value into the block. The block will then be converted to a value
block.
0x01 = Increment the value of the value block by the VB_Value. This command is
only valid for value block.
0x02 = Decrement the value of the value block by the VB_Value. This command is
only valid for value block.
VB_Value (4 Bytes): The value used for value manipulation. The value is a signed long integer (4 bytes).
Example 1: Decimal –4 = {0xFF, 0xFF, 0xFF, 0xFC}
VB_Value
MSB
LSB
FF FF FF FC
Example 2: Decimal 1 = {0x00, 0x00, 0x00, 0x01}
VB_Value
MSB
LSB
00 00 00 01
Response
Data Out
Result SW1 SW2
Table 22: Value Block Operation Response Format (2 Bytes)
Results
SW1
SW2
Meaning
Success 90 00 The operation completed successfully
Error 63 00 The operation failed.
Table 23: Value Block Operation Response Codes
6.5.2. Read Value Block
The “Read Value Block command” is used for retrieving the value from the value block. This command is only valid for
value block.
Command
Class
INS
P1
P2
Le
Read Value Block FF B1 00 Block Number 04
Table 24: Read Value Block APDU Format (5 Bytes)

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Block Number (1 Byte): The value block to be accessed.
Response
Data Out
Result Value
{MSB ..
LSB}
SW1 SW2
Table 25: Read Value Block Response Format (4 + 2 Bytes)
Value (4 Bytes): The value returned from the card. The value is a signed long integer (4
bytes).
Example 1: Decimal –4 = {0xFF, 0xFF, 0xFF, 0xFC}
Value
MSB LSB
FF FF FF FC
Example 2: Decimal 1 = {0x00, 0x00, 0x00, 0x01}
Value
MSB LSB
00 00 00 01
Results
SW1
SW2
Meaning
Success 90 00 The operation is completed
successfully.
Error 63 00 The operation is failed.
Table 26: Read Value Block Response Codes
6.5.3. Restore Value Block
The “Restore Value Block command” is used to copy a value from a value block to another value block.
Command
Class
INS
P1
P2
Lc
Data In
Value
Block
Operation
FF D7 00
Source
Block
Number
02 03
Target
Block
Number
Table 27: Restore Value Block APDU Format (7 Bytes)
Source Block Number (1 Byte): The value of the source value block will be copied to the
target value block.
Target Block Number (1 Byte): The value block to be restored. The source and target value
blocks must be in the same sector.
Response
Data Out
Result SW1 SW2
Table 28: Restore Value Block Response Format (2 Bytes)
Results
SW1
SW2
Meaning
Success 90 00 The operation is completed
successfully.
Error 63 00 The operation is failed.
Table 29: Restore Value Block Response Codes

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Example:
1. Store a value “1” into block 0x05
APDU = {FF D7 00 05 05 00 00 00 00 01}
Answer: 90 00
2. Read the value block 0x05
APDU = {FF B1 00 05 00}
Answer: 00 00 00 01 90 00 [9000]
3. Copy the value from value block 0x05 to value block 0x06
APDU = {FF D7 00 05 02 03 06}
Answer: 90 00 [9000]
4. Increment the value block 0x05 by “5”
APDU = {FF D7 00 05 05 01 00 00 00 05}
Answer: 90 00 [9000]

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7. Pseudo-APDUs
•Pseudo-APDUs are used for the following:
•Exchanging Data with Non-PCSC Compliant Tags.
•Retrieving and setting the reader parameters.
•The Pseudo-APDUs can be sent through the “AET62 PICC Interface” if the tag is already connected.
•Or the Pseudo-APDUs can be sent by using “Escape Command” if the tag is not presented yet.
7.1. Direct Transmit
This is the Payload to be sent to the tag or reader.
Command
Class
INS
P1
P2
Lc
Data In
Direct
Transmit 0xFF 0x00 0x00 0x00 Number of Bytes to send Payload
Table 30: Direct Transmit Command Format (Length of the Payload + 5 Bytes)
Lc: Number of Bytes to Send (1 Byte)
Maximum 255 bytes
Data In: Response
Response
Data Out
Direct Transmit Response Data
Table 31: Direct Transmit Response Format
7.2. Bi-Color LED Control
This APDU is used to control the states of the Bi-Color LED.
Command
Class
INS
P1
P2
Lc
Data In
Bi-Color
LED
Control
0xFF 0x00 0x40
LED
State
Control
0x04
Blinking
Duration
Control
Table 32: Bi-Color LED Control Command Format (9 Bytes)
P2: LED State Control
CMD
Item
Description
Bit 0 Final Red LED State 1 = On; 0 = Off
Bit 1 Final Green LED State 1 = On; 0 = Off
Bit 2 Red LED State Mask 1 = Update the State
0 = No change
Bit 3 Green LED State Mask 1 = Update the State
0 = No change
Bit 4 Initial Red LED Blinking State 1 = On; 0 = Off
Bit 5 Initial Green LED Blinking State 1 = On; 0 = Off
Bit 6 Red LED Blinking Mask 1 = Blink
0 = Not Blink
Bit 7 Green LED Blinking Mask 1 = Blink
0 = Not Blink
Table 33: Bi-Color LED Control Format (1 Byte)

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Data In: Blinking Duration Control
Byte 0
Byte 1
Byte 2
Byte 3
T1 Duration
Initial Blinking State
(Unit = 100ms)
T2 Duration
Toggle Blinking State
(Unit = 100ms)
Number of
repetition 0x00
Table 34: Bi-Color LED Blinking Duration Control Format (4 Bytes)
Data Out: SW1 SW2. Status Code returned by the reader.
Byte 0
SW1
SW2
Meaning
Success 90 Current LED
State
The operation is completed successfully.
Error 63 00 The operation is failed.
Table 35: Status Code
Status
Item
Description
Bit 0 Current Red LED 1 = On; 0 = Off
Bit 1 Current Green LED 1 = On; 0 = Off
Bits 2 – 7 Reserved
Table 36: Current LED State (1 Byte)
Note:
The LED State operation will be performed after the LED Blinking operation is completed.
The LED will not be changed if the corresponding LED Mask is not enabled.
The LED will not be blinking if the corresponding LED Blinking Mask is not enabled. Also, the number of repetition must
be greater than zero.
T1 and T2 duration parameters are used for controlling the duty cycle of LED blinking. For example, if T1=1 and T2=1,
the duty cycle = 50%. #Duty Cycle = T1 / (T1 + T2).
7.3. Get the Firmware Version of the reader
This is used to retrieve the firmware version of the reader.
Command
Class
INS
P1
P2
Le
Get
Response
0xFF 0x00 0x48 0x00 0x00
Table 37: Command Format (5 Bytes)
Response
Data Out
Result Firmware Version
Table 38: Response Format (10 bytes)
E.g. Response = 41 45 54 36 32 30 33 30 30 (Hex) = AET620300 (ASCII)
7.4. Get the PICC Operating Parameter
This is used to retrieve the PICC Operating Parameter of the reader.
Command
Class
INS
P1
P2
Le
Get
Response
0xFF 0x00 0x50 0x00 0x00
Table 39: Command Format (5 Bytes)
Response
Data Out
Result PICC Operating Parameter
Table 40: Response Format (1 byte)