NPTQXSAV=B_0x0, NPTXFSAV=B_0x0
OTG non-periodic transmit FIFO/queue status register
NPTXFSAV | Non-periodic Tx FIFO space available Indicates the amount of free space available in the non-periodic Tx FIFO. Values are in terms of 32-bit words. n: n words available (where 0 UNDER OR EQUAL n UNDER OR EQUAL 512) Others: Reserved 0 (B_0x0): Non-periodic Tx FIFO is full 1 (B_0x1): 1 word available |
NPTQXSAV | Non-periodic transmit request queue space available Indicates the amount of free space available in the non-periodic transmit request queue. This queue holds both IN and OUT requests. n: n locations available (0 UNDER OR EQUAL n UNDER OR EQUAL 8) Others: Reserved 0 (B_0x0): Non-periodic transmit request queue is full 1 (B_0x1): 1 location available |
NPTXQTOP | Top of the non-periodic transmit request queue Entry in the non-periodic Tx request queue that is currently being processed by the MAC. Bits 30:27: Channel/endpoint number Bits 26:25: XXXX00X: IN/OUT token XXXX01X: Zero-length transmit packet (device IN/host OUT) XXXX11X: Channel halt command Bit 24: Terminate (last entry for selected channel/endpoint) |