40.12.5 Host Frame Length

Name: FLENHIGH
Offset: 0x12
Reset: 0x00
Property: Read-Only

Bit 76543210 
 FLENHIGH[7:0] 
Access RRRRRRRR 
Reset 00000000 

Bits 7:0 – FLENHIGH[7:0] Frame Length

These bits contains the 8 high-order bits of the internal frame counter.

Table 40-1. Counter Description vs. Speed
Host Register
 STATUS.SPEED Description
Full Speed With a USB clock running at 12 MHz, counter length is 12000 to ensure a SOF generation every 1 ms.