CL-PD6722 datasheet(99/128 Pages) CIRRUS

99 / 128 page

CL-PD6710/’22

ISA–to–PC-Card Host Adapters

May 1997

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

-CE[2:1], -REG, Address, and Write Data setup to Command

active1

× Tcp) – 10

Command pulse width2

× Tcp) – 10

Address hold and Write Data valid from Command inactive3

× Tcp) – 10

-WAIT active from Command active4

(C – 2)Tcp – 10

Command hold from -WAIT inactive

(2 Tcp) + 10

Data valid from -WAIT inactive

Tcp + 10

Data setup before -OE inactive

(2 Tcp) + 10

Data hold after -OE 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 = (Npres × Nval + 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 = (Npres × Nval + 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 = (Npres × Nval + 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],

-WAIT

D[15:0]

A[25:0]

-OE, -WE

Write Cycle

Read Cycle

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