Contact Card Commands; Memory Card - 1, 2, 4, 8, And 16 Kilobit I2C Card; Select_Card_Type; Select_Page_Size - ACS ACR3x mobile Reference Manual

8.0. Contact Card Commands

This section contains the memory card command set for ACR32.
8.1. Memory Card – 1, 2, 4, 8, and 16 kilobit I2C Card
8.1.1.

SELECT_CARD_TYPE

This command powers down and up the selected card inserted in the card reader and performs a card
reset.
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 specification.
Command Format
CLA INS
FFh A4h
Response Data Format
SW1 SW2
Where:
SW1 SW2 = 90 00h if no error
8.1.2.

SELECT_PAGE_SIZE

This command chooses the page size to read the smart card. The default value is 8-byte page write. It
will reset to default value whenever the card is removed or the reader is powered off.
Command Format
CLA INS
FFh 01h
Where:
Page size
ACR3x – Reference Manual
Version 1.03
Pseudo-APDU
P1 P2 Lc Card Type
00h 00h 01h 01h
Pseudo-APDU
P1 P2 Lc Page Size
00h 00h 01h
= 03h for 8-byte page write
= 04h for 16-byte page write
= 05h for 32-byte page write
= 06h for 64-byte page write
= 07h for 128-byte page write
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