PD6710 Datasheet, PDF (113/138 Pages) Intel Corporation – ISA-to-PC-Card (PCMCIA) Controllers

ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22
Figure 24. Word I/O Read/Write Timing
-REG,
A[25:0]
t₁
t₃
-IOWR, -IORD
t₂
-WAIT
-IOIS16
t₄
t₅
t_ref
t₆
-CE1
t₇
-CE2
D[15:0]
Write Cycle
D[15:0]
Read Cycle
t₈
t₉
t₁₀
Table 33. PC Card Read/Write Timing when System Is 8-Bit
Symbol
Parameter
MIN
MAX
Units
t₁
-REG or Address setup to Command active¹
t₂
Command pulse width²
t₃
Address hold from Command inactive³
(S × Tcp) – 10
ns
(C × Tcp) – 10
ns
(R × Tcp) – 10
ns
t₄
Data setup before Command inactive
(2 Tcp) + 10
ns
t₅
Data hold after command 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 “PC Card Bus Timing Calculations” on
page 109.
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 109.
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 109.
Datasheet
113