RM0033 Rev 9 1117/1381
RM0033 USB on-the-go high-speed (OTG_HS)
1260
Bandwidth Isochronous OUT endpoint, then the space must be at least two times the
maximum packet size for that channel.
Note: More space allocated in the Transmit nonperiodic FIFO results in better performance on the
USB.
When operating in DMA mode, the DMA address register for each host channel (HCDMAn)
is stored in the SPRAM (FIFO). One location for each channel must be reserved for this.
30.11 OTG_HS interrupts
When the OTG_HS controller is operating in one mode, either peripheral or host, the
application must not access registers from the other mode. If an illegal access occurs, a
mode mismatch interrupt is generated and reflected in the Core interrupt register (MMIS bit
in the OTG_HS_GINTSTS register). When the core switches from one mode to the other,
the registers in the new mode of operation must be reprogrammed as they would be after a
power-on reset.
Figure 377 shows the interrupt hierarchy.
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