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STP2002QFP
Sun Microelectronics
Fast Ethernet, Parallel Port, SCSI (FEPS) - STP2002QFP
Work Around:
After every external reset (coming from the SCSI bus to the FAS366), the de-
vice driver should issue a chip reset to the FAS366. This prevents a mismatch
between REQs and ACKs.
9.1.3 Ethernet Channel
9.1.3.1 FEPS Ethernet Channel Does Not Reset Immediately After a
Hardware Reset
The Ethernet channel does not get reset immediately when the hardware reset
is applied to the chip. The reset only takes effect many clocks after the hard-
ware reset signal is deasserted. The complication is in fast systems, when an
interrupt is asserted to the SBus, a hardware reset will not remove the inter-
rupt fast enough. The CPU, after coming back from reset, will still see the in-
terrupt bit pending when reading the Ethernet status register.
Work Around:
After a reset, the CPU has to wait for a short period of time before accessing
the FEPS Ethernet channel.