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NET2890 数据表(PDF) 10 Page - List of Unclassifed Manufacturers

部件名 NET2890
功能描述  USB Interface Controller
PDF  73 Pages
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制造商  ETC [List of Unclassifed Manufacturers]
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标志 ETC - List of Unclassifed Manufacturers

NET2890 数据表(HTML) 10 Page - List of Unclassifed Manufacturers

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Specification
NET2890 USB Interface Controller
____________________________________________________________________________________
NetChip Technology, Inc., 1999
335 Pioneer Way, Mountain View, California 94041
TEL (650) 526-1490
FAX (650) 526-1494
http://www.netchip.com
Rev 2.0, Draft 9, July 16, 1999
10
NET2888/NET2890 Differences
The NET2890 was derived from the NET2888. Following is a list of differences between the devices.
1.4.1 Pin Changes
•
Pin 2 becomes SOF# output
•
ISO# (pin 29) becomes No-Connect
1.4.2 Register Changes
•
Completely re-defined register set.
1.4.3 Functional Changes
•
The USB protocol, including Endpoint 0, is now managed by the local CPU.
•
Endpoints are now configurable.
•
Automatic retry of failed packets.
1.5 Changes From Rev 1 to Rev 2
The following changes have been made to the NET2890 from Revision 1 to Revision 2.
1.5.1 Pin Changes
None.
1.5.2 Register Changes
MAPSEL
•
Renamed PAGESEL.
MAINCTL
•
Bits re-arranged to simplify software:
•
The “Bus-Powered” bit has inverted polarity to “Self-Powered”. See the description in Section
5, Registers.
•
Retry Enable added to bit 4.
DMACTL
•
Bits 2:0 select Endpoints 0,A-D instead of FIFO.
IRQSTAT1
•
Moved SOF interrupt to bit 7 (from old IRQSTAT3 bit 0).
•
Removed Interrupt Status 3 (bit 6).
IRQSTAT2
•
FIFO interrupts moved into EPIRQSTAT register.
•
New interrupt status bits incorporated.
IDXDATA2
•
Removed
MAPDATA1
•
Removed.
MAPDATA2
•
Removed



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