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Memory card – atmel at88sc153, Select_card_type, Read_memory_card – ACS ACR38K Smart Keyboard User Manual

Page 25

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ACR38x (CCID) – Reference Manual

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Version 6.04

www.acs.com.hk

Page 25 of 58

9.3.3.

Memory Card – ATMEL AT88SC153

9.3.3.1. SELECT_CARD_TYPE

This command powers up and down the selected card that is inserted in the card reader and performs

a card reset. It will also select the page size to be 8-byte page write.
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

Card Type

FFh

A4h 00h

00h

01h

03h


Response Data Format (abData field in the RDR_to_PC_DataBlock)

SW1 SW2

Where:

SW1 SW2 = 90 00h if no error

9.3.3.2. READ_MEMORY_CARD

Command Format (abData field in the PC_to_RDR_XfrBlock)

Pseudo-APDU

CLA INS

P1

Byte Address MEM_L

FFh

00h

Where:

INS

= B0h for reading zone 00b
= B1h for reading zone 01b
= B2h for reading zone 10b
= B3h for reading zone 11b
= B4h for reading fuse

Byte Address

Memory address location of the memory card

MEM_L

Length of data to be read from the memory card


Response Data Format (abData field in the RDR_to_PC_DataBlock)

BYTE 1 … … BYTE N SW1 SW2

Where:

BYTE x

Data read from memory card

SW1 SW2

= 90 00h if no error