FDC37B787QF SMSC [SMSC Corporation], FDC37B787QF Datasheet - Page 243

• Manufacturer Part Number: FDC37B787QF
• Description: Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR
• Manufacturer: SMSC [SMSC Corporation]

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