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771
USB Controller Module
FIFO Interrupt Status 0 register
Address: 9010 3000
Register bit assignment
FIFO Interrupt Status 1 register
Address: 9010 3010
Bits Access Mnemonic Reset Description
D31:16 N/A Not used 0x0000 Always read as 0x0000.
D15 RW1TC ACK2 0 Endpoint 0 (CTRL-In) acknowledge status. See
Table 449, “USB device endpoint status,” on page 770.
D14 RW1TC NACK2 0 Endpoint 0 (CTRL-In) negative acknowledge status. See
Table 449, “USB device endpoint status,” on page 770.
D13 RW1TC ERROR2 0 Endpoint 0 (CTRL-In) error status. See Table 449, “USB
device endpoint status,” on page 770.
D12:08 N/A Reserved N/A Not valid in DMA mode.
D07 RW1TC ACK1 0 Endpoint 0 (CTRL-Out) acknowledge status. See
Table 449, “USB device endpoint status,” on page 770
D06 RW1TC NACK1 0 Endpoint 0 (CTRL-Out) negative acknowledge status. See
Table 449, “USB device endpoint status,” on page 770.
D05 RW1TC ERROR1 0 Endpoint 0 (CTRL-Out) error status. See Table 449,
“USB device endpoint status,” on page 770.
D04:00 N/A Reserved N/A Not valid in DMA mode.
Table 450: FIFO Interrupt Status 0 register
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved
ERROR
2
Reserved
ACK2
NACK
2
Reserved
ACK1
NACK
1
ERROR
1