27

COMMERCIALTEMPERATURERANGE

BUS-MATCHING 2,048 x 36, 4,096 x 36, and 8,192 x 36

CLKA

ENB

CLKB

RT

4662 drw 21

(2)

B0-Bn

RTM

EF

(2)

W1

Wx

13

4

2

1

34

2

CLKA

ENB

CLKB

RT

4662 drw22

(2)

B0-Bn

RTM

OR

(2)

W1

Wx

13

4

2

1

34

2

LOW

NOTE:

1. CSB = LOW; W/RB is HIGH

2. Retransmit setup is complete after EF returns HIGH, only then can a read operation begin.

3. W1 = first word written to the FIFO after Master Reset.

4. No more than D-2 may be written to the FIFO between Reset (Master or Partial) and Retransmit setup. Therefore, FF will be LOW throughout the Retransmit setup procedure.

D = 2,048, 4,096 and 8,192 for the IDT72V3653, IDT72V3663 and IDT72V3673 respectively.

Figure 19. Retransmit Timing (IDT Standard Mode)

NOTE:

1. CSB = LOW; W/RB is HIGH

2. Retransmit setup is complete after OR returns HIGH, only then can a read operation begin.

3. W1 = first word written to the FIFO after Master Reset.

4. No more than D-2 may be written to the FIFO between Reset (Master or Partial) and Retransmit setup. Therefore, IR will be LOW throughout the Retransmit setup procedure.

D = 2,048, 4,096 and 8,192 for the IDT72V3653, IDT72V3663 and IDT72V3673 respectively.

Figure 20. Retransmit Timing (FWFT Mode)