A C R 3 8 S m a r t C a r d R e a d e r / W r i t e r
Response data format
Header
Status
Data length
LEN
01
H
SET_CARD_PPS
This command sends PPS Request to the smart card. This command should work in pair with SET_READER_PPS.
Command format
Header
Instruction
Data length
Data
LEN
PPS
Request
01
H
0A
H
MSB LSB
LEN
Length of PPS request. Typical value is “4”
PPS Request
PPS Request to send to the card (Please refer to ISO/IEC 7816-3:1997 Section 7 for
details of PPS request)
A typical PPS request to select T=1 protocol and FD=0x94 (62500 baud at 4MHz) is: 0xFF
0x11 0x94 0x7A
Response data format
Header
Status
Data length
Data
LEN
01
H
…
SET_READER_PPS
This command sends PPS Response to the reader, and asks the reader to switch its protocol and/or speed to communication
with the smart card. This command should work in pair with SET_CARD_PPS.
Command format
Header
Instruction
Data length
Data
LEN
PPS
Response
01
H
0B
H
MSB LSB
LEN
Length of PPS response. Typical value is “4”.
ACR38 Reference Manual
Version 2.2 January 2008
Page
13
of 44