LPC47B272-MS SMSC, LPC47B272-MS Datasheet - Page 89
![IC CTRLR SUPER I/O LPC 100-QFP](/photos/6/82/68212/qfp100-g1_pkg_sml.jpg)
LPC47B272-MS
Manufacturer Part Number
LPC47B272-MS
Description
IC CTRLR SUPER I/O LPC 100-QFP
Manufacturer
SMSC
Datasheet
1.LPC47B272-MS.pdf
(195 pages)
Specifications of LPC47B272-MS
Controller Type
I/O Controller
Interface
LPC
Voltage - Supply
3.3V
Current - Supply
15mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
100-QFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
638-1019
Available stocks
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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 it may be filled with writeIntrThreshold bytes.
writeIntrThreshold =
(16-<threshold>) free bytes in FIFO
An interrupt is generated when serviceIntr is 0 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 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.
SMSC LPC47B27x
- 89 -
Rev. 04-17-07
DATASHEET
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