Texas Instruments TMS320C3x User Manual

Page 277

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Programmable Wait States

9-11

TMS320C30 and TMS320C31 External-Memory Interface

Table 9–5. Wait-State Generation

Inputs

Output

SWW Bit Field

/RDYext

/RDYwtcnt

/RDYint

Functional Description

00

0

1

x

x

0

1

Wait until external RDY is signaled

01

x

x

0

1

0

1

Wait until internal wait state generator
counts down to 0

10

0

0

1

1

0

1

0

1

0

0

0

1

Wait until first signal: external RDY or the
internal wait state generator (logical OR)

11

0

0

1

1

0

1

0

1

0

1

1

1

Wait until both external RDY is signaled
and wait state generator counts down to
0 (logical AND)

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