ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
Figure 24. Word I/O Read/Write Timing
-REG,
A[25:0]
t
t
1
3
t
2
-IOWR, -IORD
t
t
5
4
-WAIT
t
ref
t
6
-IOIS16
-CE1
t
7
-CE2
D[15:0]
Write Cycle
t
t
8
10
t
9
D[15:0]
Read Cycle
Table 33. PC Card Read/Write Timing when System Is 8-Bit
Symbol
Parameter
MIN
MAX
Units
t
t
t
t
t
-REG or Address setup to Command active1
Command pulse width2
(S × Tcp) – 10
(C × Tcp) – 10
(R × Tcp) – 10
(2 Tcp) + 10
0
ns
ns
ns
ns
ns
1
2
3
4
5
Address hold from Command inactive3
Data setup before Command inactive
Data hold after command inactive
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
page 109.
× N + 1), see “PC Card Bus Timing Calculations” on
pres
val
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 × N + 1), see page 109.
pres
val
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 × N + 1), see page 109.
pres
val
Datasheet
113
INTEL [ INTEL ]
