FDC37N958FR Datasheet, PDF (286/316 Pages) List of Unclassifed Manufacturers – Notebook I/O Controller with Enhanced Keyboard and System Control

AEN
FDRQ,
PDRQ
nDACK
nIOR
or
nIOW
DATA
(DO-D7)
TC
t15
t16
t3
t2
t1
t14
t11
t6
t5
t4
t12
t8
t7
t13
t10
t9
DATA VALID
FIGURE 34 - DMA TIMING (SINGLE TRANSFER MODE)
NAME
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
t13
t14
t15
t16
Table 93 - DMA Timing (Single Transfer Mode) Parameters
DESCRIPTION
MIN
TYP
MAX
nDACK Delay Time from FDRQ High
0
DRQ Reset Delay from nIOR or nIOW
100
FDRQ Reset Delay from nDACK Low
100
nDACK Width
150
nIOR Delay from FDRQ High
0
nIOW Delay from FDRQ High
0
Data Access Time from nIOR Low
100
Data Set Up Time to nIOW High
40
Data to Float Delay from nIOR High
10
60
Data Hold Time from nIOW High
10
nDACK Set Up to nIOW/nIOR Low
5
nDACK Hold after nIOW/nIOR High
10
TC Pulse Width
60
AEN Set Up to nIOR/nIOW
40
AEN Hold from nDACK
10
TC Active to PDRQ Inactive
100
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SMSC DS – FDC37N958FR
Page 280
Rev. 09/01/99