USB 2.0 seem to have 480Mbps speed of transfer. Can anyone explain it in detail.
USB 2.0 tranfers data is microframe (125us) compared to a frame (1ms) in USB 1.1. In a single microframe u can send 3 packets i..e 3 x 1024 = 3072 bytes.
Hence 3072 x 8 bytes in 1ms
3072 x 8 x 8 bits in 1 ms
3072 x 8 x 8 x 1000 in 1 second
...
...
it comes to 196Mbps
Then how is 480 Mbps achieved
USB 2.0 tranfers data is microframe (125us) compared to a frame (1ms) in USB 1.1. In a single microframe u can send 3 packets i..e 3 x 1024 = 3072 bytes.
Hence 3072 x 8 bytes in 1ms
3072 x 8 x 8 bits in 1 ms
3072 x 8 x 8 x 1000 in 1 second
...
...
it comes to 196Mbps
Then how is 480 Mbps achieved