PD6710 Datasheet, PDF (114/138 Pages) Intel Corporation – ISA-to-PC-Card (PCMCIA) Controllers

PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
Figure 25. PC Card Read/Write Timing When System Is 8-Bit (SBHE Tied High)
-REG,
A[25:0]
t₁
t₃
t₂
-OE, -WE
-IOWR, -IORD,
-CE1
D[7:0]
Write Cycle
D[7:0]
Read Cycle
Odd/even Data
t₄
t₅
Odd/Even Data
D[15:8]
Read or
XX
Write Cycle
Table 34. Normal Byte Read/Write Timing
Symbol
Parameter
MIN
MAX
Units
t₁
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
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.
114
Datasheet