Host SOF Interrupt Frame Compare Register
FRAMECOMP | These bits are used to specify the data to be compared with the low-order eight bits of a frame number when sending a SOF token. If the SOFSTEP bit of Host Control 2 Register (HOST_CTL2) is ‘0’, the frame number of SOF is compared with the value of this register when sending a SOF token. If they match, the SOFIRQ bit of the Interrupt USB Host Register (INTR_USBHOST) is set to ‘1’. The setting of this register is invalid when the SOFSTEP bit of Host Control 2 Register (HOST_CTL2) is ‘1’. Note:
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