在寫USB相關應用的時候,有時先了解bandwidth與throughput的限制,會比較有利於日後的開發。
如果沒有在一開始的時候就弄清楚速度上面的限制,很可能會達不到最後想要的目標。
[][1]
這裡簡單的列出了USB的bandwidth與throughput。
USB Bandwidth & HID throughtput |= 速度 |= Bandwidth (bits/s) |= HID throughput (bytes/sec/report) |= HID throughput (bytes/microframe/IO report) |=Remark | |Low Speed |1.5M |800 |8 |
| |Full Speed |12M |64,000 |64 |
| |High Speed |480M |23.4M |3072 |
| REF: http://www.edacn.net/html/86/49586-52367.html USB的Bandwidth與throughput
[1]: