ACR100I – Reference Manual
Version 1.00
www.acs.com.hk
Page 5 of 20
3.0. System Block Diagram
The USB Hub Controller is the communication interface between the computer and the MCU of the
smart card and the flash memory via USB port connection. The flash memory is available for the end-
user to use as storage. In Windows Explorer, the device is detected as a removable disk. The
ACR100I is powered from the USB port without other external power supply.
Figure 1
: ACR100I System Block Diagram
ACR100I
2 PORT
USB 2.0
Hub
Controller
Smart Card
Interface Circuit
Flash memory
Antenna for
MIFARE Chip
MIFARE Chip
SIM-sized
Smart Card
USB
Interface
