PD6710 Datasheet, PDF (112/138 Pages) Intel Corporation – ISA-to-PC-Card (PCMCIA) Controllers

PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
Table 32. Word I/O Read/Write Timing
Symbol
Parameter
MIN
MAX
Units
t₁
-REG or Address setup to Command active¹
t₂
Command pulse width²
t₃
Address hold and Write Data valid from Command inactive³
t₄
-WAIT active from Command active⁴
(S × Tcp) – 10
ns
(C × Tcp) – 10
ns
(R × Tcp) – 10
ns
(C – 2)Tcp – 10
ns
t₅
Command hold from -WAIT inactive
(2 Tcp) + 10
ns
t_ref
Card -IOIS16 delay from valid Address (PC Card specification)
35
ns
t₆
-IOIS16 setup time before Command end
t₇
-CE2 delay from -IOIS16 active⁵
(3 Tcp) + 10
ns
Tcp – 10
ns
t₆
Data valid from -WAIT inactive
Tcp + 10
ns
t₉
Data setup before -IORD inactive
(2 Tcp) + 10
ns
t₁₀
Data hold after -IORD 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.
4. For typical active timing programmed at 280 ns, maximum -WAIT timing is 190 ns after Command active.
5. -IOIS16 must go low within 3Tcp + 10 ns of the cycle beginning or -IOIS16 will be ignored and -CE will not be activated.
112
Datasheet