Advanced Card Systems Limited ACR1281S Benutzerhandbuch
ACR1281S
Advanced Card Systems Ltd.
Page 14 of 56
SERIAL COMMUNICATION PROTOCOL (CCID-LIKED FRAME FORMAT)
Communication setting: 9600 bps(Default), 19200 bps, 38400 bps, 57600 bps and 115200
bps,128000bps, 250000bps, 500000bps.
Byte format: 8-N-1.
The communication protocol between the Host and ACR1281S is very similar to the CCID
protocol.
Command Frame Format
STX
(0x02)
Bulk-OUT Header
APDU Command
Or
Parameters
Checksum
ETX
(0x03)
1 Byte
10 Bytes
M Bytes
(If applicable)
1 Byte
1 Byte
NOTE: Checksum = XOR {Bulk-OUT Header, APDU Command or Parameters}
Status Frame Format
STX
(0x02)
Status
Checksun
ETX
(0x03)
1 Byte
1 Byte
1 Byte
1 Byte
NOTE: Checksum = Status
Response Frame Format
STX
(0x02)
Bulk-IN Header
APDU Response
Or
abData
Checksum
ETX
(0x03)
1 Byte
10 Bytes
N Bytes
(If applicable)
1 Byte
1 Byte
NOTE: Checksum = XOR {Bulk-IN Header, APDU Response or abData}