mcs7717 MosChip, mcs7717 Datasheet - Page 14

• Manufacturer Part Number: mcs7717
• Description: Three Port Usb Hub With 1 Serial, 1 Printer
• Manufacturer: MosChip

Page 14
MCS7717
Three Port USB Hub with 1 Serial, 1 Printer
Vendor Specific Command Parameters
Brequest: specifies whether to Read or Write
Wvalue: Specifies the Application Number.
Windex: Is the offset of the register to Read/Write.
Wlength: Is the length of the data we are going to read or write.
0x0E = write to the application register.
0x0D = read from the application register.
0x0100 is the application number for the Parallel Printer port
0x0200 is the application number for the Serial port
0x0000 is the application number provided for accessing the other control registers to control the
xx specifies the Byte value to be written into the register.
Parallel Printer port and Serial port (i.e. Enabling the Higher Baud Rates, enabling the Auto
hardware Flow Control, Setting the clock frequency, etc.)
Rev. 1.7