These bits contains the Ping/Bulk-out period.
These bits are cleared when a USB reset is sent or when PEN[n] is
zero.
| BINTERVAL | Description |
|---|
| =0 | Multiple consecutive OUT token is sent in the same frame
until it is ACKed by the peripheral |
| >0 | One OUT token is sent every BINTERVAL frame until it is
ACKed by the peripheral |
Depending from the type of pipe the desired period is defined
as:
| PTYPE | Description |
|---|
| Interrupt | 1 ms to 255
ms |
| Isochronous | 2^(BINTERVAL) * 1 ms |
| Bulk or control | 1 ms to 255 ms |
| EXT LPM | BINTERVAL ignored. Always 1 ms when a
NYET is received. |
