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
24
4.5.5 I/O Performance
4.5.5.1 Non-Multiplexed Read Transaction
•
Read Access Time (T6): 18 nsec
•
Read Recovery Time (T8): 19 nsec
•
For an 8-bit bus, the maximum performance is:
1/37 nsec = 27 Mbytes/sec
•
For a 16-bit bus, the maximum performance is:
2/37 nsec = 54 Mbytes/sec
4.5.5.2 Multiplexed Read Transaction
•
ALE Width (T3): 5 nsec
•
ALE to Read Command (T19): 1 nsec minimum
•
Read Access Time (T6): 18 nsec
•
Read Recovery Time (T8): 19 nsec
•
For an 8-bit bus, the maximum performance is:
1/43 nsec = 23 Mbytes/sec
•
For a 16-bit bus, the maximum performance is:
2/43 nsec = 46 Mbytes/sec
4.5.5.3 Non-Multiplexed Write Transaction
•
Write Width (T12): 5 nsec
•
Write to Write Recovery Time (T15A): 28 nsec
•
For an 8-bit bus, the maximum performance is:
1/33 nsec = 30 Mbytes/sec
•
For a 16-bit bus, the maximum performance is:
2/33 nsec = 60 Mbytes/sec
4.5.5.4 Multiplexed Write Transaction
•
ALE Width (T3): 5 nsec
•
ALE to Write Command (T19): 1 nsec minimum
•
Write Width (T12): 5 nsec
•
Write to Write Recovery Time (T15A): 28 nsec
•
For an 8-bit bus, the maximum performance is:
1/39 nsec = 25 Mbytes/sec
•
For a 16-bit bus, the maximum performance is:
2/39 nsec = 50 Mbytes/sec
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
