ACR101I – Reference Manual
Version 1.01
www.acs.com.hk
Page 19 of 21
7.2. Mass Storage
Mass Storage Device Class specifies all the protocols required for data transaction between Host
(computer) and storage devices. The configurations and usage of USB endpoints on ACR101 (CCID)
shall follow
Mass Storage Class Bulk-Only Transport
in Section 3 (Protocol Code) of the
USB Mass
Storage Device Specification
. This document is available at:
An overview of this specification is summarized below:
1.
Control Commands
are sent on control pipe (default pipe). It is shared with the CCID
interface.
2.
Data-Out Command
Protocol uses the
Bulk-OUT
endpoint to transfer data from the host to
the device.
3.
Data-In Command
Protocol uses the
Bulk-IN
endpoint to transfer data from the device or to
return status about the device.
