Texas Instruments MSP430

Descriptions and Classes
Comparison/Summary of Classes
CDC HID MSC
Host Interface
COM Port HID device
Storage Volume
Host Driver
Required
No
(but .inf file required)
No No
Host Loading
User
Intervention
Silent Silent
Bandwidth
“Hundreds of KB/sec” 62KB/sec “Hundreds of KB/sec”
Code Size
5K 5K
9K
(12-15K w/FS & vol)
Endpoints
2 in
1 out
1 in
1 out
1 in
1 out
Transfer Type
Bulk Interrupt Bulk (BOT)
Advantages

Familiar to user

Bulk transport

Common host apps

Silent loading

Interrupt xfers

Mouse/Keybd

Familiar to user

Allows storage of
data using filesys
7 - 18 MSP430 Workshop - USB Devices