37.12.5 Host Frame Length
| Name: | FLENHIGH |
| Offset: | 0x12 |
| Reset: | 0x00 |
| Property: | Read-Only |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| FLENHIGH[7:0] | |||||||||
| Access | R | R | R | R | R | R | R | R | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 7:0 – FLENHIGH[7:0] Frame Length
These bits contains the 8 high-order bits of the internal frame counter.
| Host Register STATUS.SPEED | Description |
|---|---|
| Full Speed | With a USB clock running at 12MHz, counter length is 12000 to ensure a SOF generation every 1 ms. |
| Full Speed | With a USB clock running at 60MHz, counter length is 60000 to ensure a SOF generation every 1 ms. |
| High Speed | With a USB clock running at 60MHz, counter length is 7500 to ensure a SOF generation every 125 μs. |