ACR101I – Reference Manual
Version 1.01
www.acs.com.hk
Page 5 of 21
3.0. System Block Diagram
The USB Hub Controller is the communication interface between the personal computer and the MCU
of the smart card and flash memory via USB port connection. The 1 GB flash memory is available for
the end-user to use as storage. In Windows Explorer, the device is detected as a removable disk. The
ACR101 (CCID) is powered from the USB port without other external power supply.
Figure 1
: ACR100I System Block Diagram
USB
Interface
SIM-sized
Smart Card
ACR101I
Smart Card
Interface Circuit
USB 2.0
Hub
Controller
1 GB Flash Memory
