FDC37C669-MT SMSC, FDC37C669-MT Datasheet - Page 96
FDC37C669-MT
Manufacturer Part Number
FDC37C669-MT
Description
IC CTRLR SUPER I/O FLPPY 100TQFP
Manufacturer
SMSC
Datasheet
1.FDC37C669-MT.pdf
(162 pages)
Specifications of FDC37C669-MT
Controller Type
I/O Controller
Interface
ISA Host
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
25mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
638-1008
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
FDC37C669-MT
Manufacturer:
Microchip Technology
Quantity:
10 000
- Current page: 96 of 162
- Download datasheet (619Kb)
For a description of the ECP Protocol, please refer to the
IEEE 1284 Extended Capabilities Port Protocol and ISA
Interface Standard, Rev. 1.09, Jan.7, 1993.
document is available from Microsoft.
Description
The port is software and hardware compatible with
existing parallel ports so that it may be used as a
standard LPT port if ECP is not required. The port is
designed to be simple and requires a small number of
gates to implement. It does not do any "protocol"
negotiation, rather
This
96
it provides an automatic high burst-bandwidth channel
that supports DMA for ECP in both the forward and
reverse directions.
Small FIFOs are employed in both forward and reverse
directions to smooth data flow and improve the maximum
bandwidth requirement. The size of the FIFO is 16 bytes
deep. The port supports an automatic handshake for the
standard parallel port to improve compatibility mode
transfer speed.
The port also supports run length encoded (RLE)
decompression (required) in hardware. Compression is
accomplished by counting identical bytes and transmitting
an RLE byte that indicates how many times the next byte
is to be repeated. Decompression simply intercepts the
RLE byte and repeats the following byte the specified
number of times. Hardware support for compression is
optional.
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