
CL-PD6710/’22
ISA–to–PC-Card Host Adapters
May 1997
99
PRELIMINARY DATA SHEET v3.1
ELECTRICAL SPECIFICATIONS
Default minimum Command time = (
C
×
Tcp
) – 10 ns = {7
×
40 ns} – 10 ns = 270 ns
Equation 15-9
Default minimum Recovery time = (
R
×
Tcp
) – 10 ns = {4
×
40 ns} – 10 ns = 150 ns
Equation 15-10
15.3.7
PC Card Socket Timing
Table 15-12. Memory Read/Write Timing (Word Access)
Symbol
Parameter
MIN
MAX
Units
t
1
-CE[2:1], -REG, Address, and Write Data setup to Command
active
1
(S
×
Tcp) – 10
ns
t
2
Command pulse width
2
(C
×
Tcp) – 10
ns
t
3
Address hold and Write Data valid from Command inactive
3
(R
×
Tcp) – 10
ns
t
4
-WAIT active from Command active
4
(C – 2)Tcp – 10
ns
t
5
Command hold from -WAIT inactive
(2 Tcp) + 10
ns
t
6
Data valid from -WAIT inactive
Tcp + 10
ns
t
7
Data setup before -OE inactive
(2 Tcp) + 10
ns
t
8
Data hold after -OE inactive
0
ns
1
The Setup time is determined by the value programmed into the
Setup Timing
register, index 3Ah/3Dh. Using the Timer
Set 0 default value of 01h, the setup time would be 70 ns. S = (N
pres
×
N
val
+ 1), see page
98
.
2
The Command time is determined by the value programmed into the
Command Timing
register, index 3Bh/3Eh. Using
the Timer Set 0 default value of 06h, the Command time would be 270 ns. C = (N
pres
×
N
val
+ 1), see page
98
.
3
The Recovery time is determined by the value programmed into the
Recovery Timing
register, index 3Ch/3Fh. Using the
Timer Set 0 default value of 03h, the hold (Recovery) time would be 150 ns. R = (N
pres
×
N
val
+ 1), see page
98
.
4
For typical active timing programmed at 280 ns, maximum -WAIT timing is 190 ns after Command active.
-REG, -CE[2:1],
t
1
t
2
t
4
t
3
-WAIT
t
7
D[15:0]
D[15:0]
t
8
t
5
A[25:0]
-OE, -WE
t
6
Write Cycle
Read Cycle