
SH7285/SH7286 USB Function Module
USB to Serial Conversion Application Note
USB host
Bulk OUT transfer
M3A-HS85
sample program
Bulk OUT transfer RAM
256 bytes
Serial device
USB I/F
Serial I/F
Serial OUT
communication
Bulk IN transfer
Bulk IN transfer RAM
256 bytes
USB I/F
Serial I/F
Serial IN
communication
Figure 3.6 Data Flow
REJ05B1152-0100/Rev.1.00 May 2008 Page 26 of 35
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