t3
t4
nAUTOFD
PDATA<7:0>
t2
t1
t7
t8
nSTROBE
BUSY
t6
t5
t6
Parameter
min
max
units
Notes
t1
t2
t3
nAUTOFD Valid to nSTROBE Asserted
PDATA Valid to nSTROBE Asserted
BUSY Deasserted to nAUTOFD
Changed
nBUSY Deasser ted to PDATA Changed
nSTROBEAsserted to BUSY Asserted
nSTROBE Deasserted to Busy
Deasserted
0
0
80
60
60
180
ns
ns
ns
1,2
1,2
t4
t5
t6
80
0
0
180
ns
ns
ns
t7
t8
nBUSY Deasser ted to nSTROBE
Asserted
nBUSY Asserted to nSTROBE
Deasserted
80
80
200
180
ns
ns
1,2
2
1. Maximum value only applies if there is data in theFIFO waiting to be written out.
2. BUSY is not considered asserted or deasserted until it is stable for a minimum of 75 to
130 ns.
FIGURE 20 - ECP PARALLEL PORT FORWARD TIMING
159
SMSC [ SMSC CORPORATION ]
