ACM1252U-Y3
– Reference Manual
Version 1.03
www.acs.com.hk
Page 8 of 92
www.acs.com
.hk
4.0. Architecture
For communication architecture, the protocol used between the ACM1252U-Y3 and the computer is
CCID protocol. All communications between PICC and SAM are PC/SC compliant.
Figure 1
: ACM1252U-Y3 Architecture
ACM1252 PCSC
SAM Interface (Optional)
PCSC Layer
ISO 7816 Parts 1-4
SAM Interface
ISO 14443 Parts 1-
4/ISO 18092
PICC Interface
PICC
(Built-in Antenna)
USB
Interface
(CCID)
Physical
Interface
ACM1252U-Y3
ACM1252 PCSC
PICC Interface
T=CL & T=1
Emulation
SAM Socket
(Optional)