FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 160

• Manufacturer Part Number: FDC37C669_07
• Description: PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support
• Manufacturer: SMSC [SMSC Corporation]

PDATA<7: 0>
nAUTOFD
1. Maximum va lue on ly appl ies if th ere is room in the FIFO a nd a terminal count has no t
2. nACK is not consid ered asserted or dea sserted un ti l i t is stable for a minimum of 75 to
nACK
t1
t2
t3
t4
t5
t6
b een rece ived. ECP can stal l b y kee pin g nAU TOFD lo w.
130 ns.
PDATA Va lid to nACK Asserted
nAUTOFD Deasserte d to PDATA
C hang ed
nACK Asse rte d to n AUTOFD
Deasserted
nACK D easser te d to n AUTOFD
Asserted
n AUTOFD Asserted to nACK Asserted
nAUTOFD De asser ted to nACK
Deasserted
FIGURE 21 - ECP PARALLEL PORT REVERSE TIMING
Parameter
t 4
t 1
t 5
t 3
160
t 6
min
80
80
0
0
0
0
t 4
max
2 00
2 00
t 2
units
ns
ns
ns
ns
ns
ns
Notes
1,2
2