FDC37M707QFP Standard Microsystems (SMSC), FDC37M707QFP Datasheet - Page 101

• Manufacturer Part Number: FDC37M707QFP
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37M707QFP

• Pin Count: 100
• Lead Free Status / RoHS Status: Not Compliant

may be read from the FIFO in a single burst.
Programmed I/O - Transfers from the Host to
the FIFO
In the forward direction an interrupt occurs when
serviceIntr is 0 and there are writeIntrThreshold
or more bytes free in the FIFO. At this time if
the FIFO is empty it can be filled with a single
burst before the empty bit needs to be re-read.
Otherwise
writeIntrThreshold bytes.
writeIntrThreshold =
it
may
(16-<threshold>) free
bytes in FIFO
be
filled
with
101
and the number of bytes in the FIFO is less than
or equal to <threshold>. (If the threshold = 12,
then the interrupt is set whenever there are 12 or
less bytes of data in the FIFO.) The PINT pin
can be used for interrupt-driven systems. The
host must respond to the request by writing data
to the FIFO. If at this time the FIFO is empty, it
can be completely filled in a single burst,
otherwise a minimum of (16-<threshold>) bytes
may be written to the FIFO in a single burst.
This process is repeated until the last byte is
transferred into the FIFO.