LOCAL BUS INTERFACE

IDLE

 

CYCLE 1

 

CYCLE 2

 

IDLE

 

NON·PIPELINED

 

NON·PIPElINED

 

 

 

 

(READ)

 

(READ)

 

n

TI

T1

T2

T1

T2

T2

ClK2

ClK

BEO#-BE3#,

A2-A31,

M/IO#, DIC#

W/R#

 

 

AD5#

 

 

NA#

 

 

B516#

 

READY#

 

lOCK#

VALID 2

 

DO-D31

- --- -- , - -

--0--

 

I

231732i3·8

Figure 3-8. Non-Pipelined Address Read Cycles

At the end of T2, READY# is sampled. If processor reads the input data on the data

READY# is low, the Inte1386 DX micro- bus.

If READY# is high, wait states (one CLK cycle) are added until READY# is sam- pled low. READY# is sampled at the end of each wait state.

Once READY# is sampled low, the Inte1386 DX microprocessor reads the input data, and the read cycle terminates. If a new bus cycle is pending, it begins on the next CLK cycle.

3-12

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Intel 386 manual Non-Pipelined Address Read Cycles