Altera cyclone V Technical Reference page 2474

18-384
dctl
Bit
8
CGNPInNak
7
sgnpinnak
6:4
tstctl
3
goutnaksts
Altera Corporation
Name
A write to this field clears the Global Non-periodic IN
NAK.
Value
0x0
0x1
A write to this field sets the Global Non-periodic IN
NAK. The application uses this bit to send a NAK
handshake on all nonperiodic IN endpoints. The core
can also Set this bit when a timeout condition is
detected on a non-periodic endpoint in shared FIFO
operation. The application must Set this bit only after
making sure that the Global IN NAK Effective bit in
the Core Interrupt Register (GINTSTS.GINNakEff)​ is
cleared
Value
0x0
0x1
Others: Reserved.
Value
0x0
0x1
0x2
0x3
0x4
0x5
Reports NAK status. All isochronous OUT packets
aredropped.
Value
0x0
0x1
Description
Description
Disable Global Non-periodic IN NAK
Clear Global Non-periodic IN NAK
Description
Disable Global Non-periodic IN NAK
Global Non-periodic IN NAK
Description
Test mode disabled
Test_J mode
Test_K mode
Test_SE0_NAK mode
Test_Packet mode
Test_force_Enable
Description
A handshake is sent based on the FIFO Status
and the NAK and STALL bit settings.
No data is written to the RxFIFO, irrespective
of space availability. Sends a NAK handshake
on all packets, except on SETUP transactions.
All isochronous OUT packets are dropped.
cv_5v4
2016.10.28
Access Reset
WO 0x0
WO 0x0
RW 0x0
RO 0x0
USB 2.0 OTG Controller
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