Note 1. Synchronous mode index coincident with both A and B high.

Note 2. Synchronous mode index coincident with both A and B low.

FIGURE 4. PCKI, A, B AND INDX/

7766-110806-10

RD/

CS/

RS

x0/_x1

DB

VALID

DATA

VALID DATA

FIGURE 2. READ CYCLE

INPUT DATA

INPUT DATA

WR/

CS/

RS

x0/_x1

DB

FIGURE 3. WRITE CYCLE

PCKI

(MCR0 <7> = 0)

(MCR0 <7> = 1)

A

B

INDX/

Note 1

Note 2