9
AC TIMING
9.1 Host Timing
t3
t5
AX,
AEN,
nIOCS16
t1
t6
t2
nIOR
t4
DATA
(D0-D7)
DATA VALID
PD0-PD7, nERR,
PE, SLCT, nACK,
BUSY
t8
nIOR/nIOW
t9
PINTR
PINTR is the interrupt assigned to the Parallel Port
Parameter
min
typ
max
units
t1
40
ns
A0-A9, AEN, nIOCS16 Set Up to
nIOR Low
t2
t3
nIOR Width
150
10
ns
ns
A0-A9, AEN, nIOCS16 Hold from
nIOR High
Data Access Time from nIOR Low
Data to Float Delay from nIOR High
Parallel Port Setup
t4
t5
t6
100
60
ns
ns
ns
10
20
t8
t9
nIOR or nIOW Inactive for Transfers to
and from ECP FIFO
150
ns
ns
260
nIOR Active to PINTR Inactive
FIGURE 4 - MICROPROCESSOR READ TIMING
SMSC DS – SP37E760
Page 62
Rev. 04/13/2001
SMSC [ SMSC CORPORATION ]
