Specification
NET2272 USB Peripheral Controller
______________________________________________________________________________
NetChip Technology, Inc., 2003
Patent Pending
335 Pioneer Way, Mountain View, California 94041
TEL (650) 526-1490
FAX (650) 526-1494
http://www.netchip.com
Rev 1.2, October 15, 2003
59
8.4.8 (Address 20h; IRQENB0) Interrupt Enable Register (low byte)
Bits
Description
Read
Write
Default
Value
7
SOF Interrupt Enable. When set, this bit enables a local interrupt to be generated
when a start-of-frame packet is received by the NET2272.
Yes
Yes
0
6
DMA Done Interrupt Enable. When set, this bit enables a local interrupt to be
generated when an EOT signal is received from the DMA controller, or when the
EP_TRANSFER counter reaches 0zero during a DMA writes to an IN endpoint.
Yes
Yes
0
5
Setup Packet Interrupt Enable. When set, this bit enables a local interrupt to be
generated when a setup packet has been received from the host.
Yes
Yes
0
4
Virtualized Endpoint Interrupt Enable. When set, this bit enables a local interrupt
to be generated when an IN or OUT token to a virtualized endpoint is detected.
Yes
Yes
0
3
Endpoint C Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
Yes
Yes
0
2
Endpoint B Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
Yes
Yes
0
1
Endpoint A Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
Yes
Yes
0
0
Endpoint 0 Interrupt Enable. When set, this bit enables a local interrupt to be set
when an interrupt is active on this endpoint.
Yes
Yes
0
8.4.9 (Address 21h; IRQENB1) Interrupt Enable Register (high byte)
Bits
Description
Read
Write
Default
Value
7
Reserved.
0
No
0
6
Root Port Reset Interrupt Enable. When set, this bit enables a local interrupt to be
generated when a root port reset is detected.
Yes
Yes
0
5
Resume Interrupt Enable. When set, this bit enables a local interrupt to be
generated when a device resume has been detected.
Yes
Yes
0
4
Suspend Request Change Interrupt Enable. When set, this bit enables a local
interrupt to be generated when a change in the Suspend Request Interrupt state is
detected.
Yes
Yes
0
3
Suspend Request Interrupt Enable. When set, this bit enables a local interrupt to
be generated when a USB Suspend Request from the host is detected.
Yes
Yes
0
2
VBUS Interrupt Enable. When set, this bit enables a local interrupt to be generated
when a change has been detected on the VBUS pin.
Yes
Yes
0
1
Control Status Interrupt Enable. When set, this bit enables a local interrupt to be
generated when an IN or OUT token indicating Control Status has been received.
Yes
Yes
0
0
Reserved.
0
No
0
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