FDC37B787-NS Standard Microsystems (SMSC), FDC37B787-NS Datasheet - Page 243
FDC37B787-NS
Manufacturer Part Number
FDC37B787-NS
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.FDC37B787-NS.pdf
(249 pages)
Specifications of FDC37B787-NS
Pin Count
128
Lead Free Status / RoHS Status
Compliant
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Note 1
Note 2
PDATA<7:0>
NAME
t1
t2
t3
t4
t5
t6
nAUTOFD
nACK
Maximum value only applies if there is room in the FIFO and terminal count has not been
received. ECP can stall by keeping nAUTOFD low.
nACK is not considered asserted or deasserted until it is stable for a minimum of 75 to 130 ns.
PDATA Valid to nACK Asserted
nAUTOFD Deasserted to PDATA Changed
nACK Asserted to nAUTOFD Deasserted
(Notes 1,2)
nACK Deasserted to nAUTOFD Asserted (Note 2)
nAUTOFD Asserted to nACK Asserted
nAUTOFD Deasserted to nACK Deasserted
TABLE 108 - ECP PARALLEL PORT REVERSE TIMING
FIGURE 29 - ECP PARALLEL PORT REVERSE TIMING
DESCRIPTION
t4
t1
t5
253
t3
t6
MIN
80
80
0
0
0
0
t4
TYP
t2
MAX
200
200
UNITS
ns
ns
ns
ns
ns
ns
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