GM82C803CN Datasheet, PDF (82/84 Pages) List of Unclassifed Manufacturers – 2.88 MB FDC/ Dual UARTs with FIFO/PIO(EPP/ ECP)/ IDE Interface/ S-IR/ PnP

EPP 1.9 WRITE / READ Cycle Timing Parameters
Parameter
t0
SD valid to IOW Asserted
t1
IOW Asserted to IOCHRDY Asserted
t2
IOW Asserted to WRITE Asserted
t3
WRITE Asserted to command Asserted
t4
WRITE Asserted to valid pdata
t5
Command Asserted to WAIT Deasserted
t6
WAIT Deasserted to IOCHRDY Deasserted
t7
WAIT Deasserted to command Deasserted
t8
IOCHRDY Deasserted to IOW Deasserted
t9
Command Deasserted to WAIT Asserted
t10
WAIT Asserted to WRITE Change
t11
WAIT Asserted to invalid pdata
t12
IOR Asserted to IOCHRDY Asserted
t13
IOCHRDY Asserted to command Asserted
t14
Command Asserted to valid pdata
t15
Time out
t16
WAIT Deasserted to IOCHRDY Deasserted
t17
WAIT Deasserted to command Deasserted
t18
Valid pdata to valid sdata
t19
IOCHRDY Deasserted to IOR Deasserted
t20
Command Deasserted to invalid pdata
t21
Invalid pdata to WAIT Asserted
EPP 1.7 WRITE / READ Cycle Timing Parameters
Parameter
t0
Valid sdata to IOW Asserted
t1
IOW Asserted to WRITE Asserted
t2
IOW Asserted to command Asserted
t3
IOW Asserted to pdata valid
t4
WAIT Asserted to IOCHRDY Asserted
t5
WAIT Desserted to IOCHRDY Deasserted
t6
IOCHRDY Deasserted to IOW Deasserted
t7
IOW Deasserted to command Deasserted
t8
IOW Deasserted to WRITE Deasserted
t9
Command Deasserted to invalid pdata
t10
IOR Asserted to command Asserted
t11
WAIT Asserted to IOCHRDY Asserted
t12
Command Asserted to pdata valid
t13
Pdata valid to sdata valid
t14
WAIT Deasserted to IOCHRDY Deasserted
t15
IOCHRDY Deasserted to IOR Deasserted
t16
IOR Deasserted to command Deasserted
t17
Command Deasserted to pdata invalid
t18
Sdata hold time
GM82C803CN
Min
0
10
40
0
0
40
120
10
0
40
0
10
60
0
0
40
120
0
10
0
0
Max
30
40
80
Unit
ns
ns
10
us
80
160
Note
80
30
80
10
us
80
160
40
Min
0
10
40
10
10
10
10
40
10
0
40
10
0
0
10
10
40
0
0
Max
Unit Note
20
50
30
20
20
20
60
30
60
20
40
20
30
60
20