beautypg.com

Motorola DSP96002 User Manual

Page 513

background image

MOTOROLA

DSP96002 USER’S MANUAL

A - 325

The term "2 * ap" comes from the two instruction fetches done by the RTS/RTR/RTI instruction to refill the

pipeline.

A.9.12

Addressing Mode Timing Summary

+ ea

+ ea

Effective Addressing Mode

Words

Cycles

Address Register Indirect

No Update

0

0

Postincrement by 1

0

0

Postdecrement by 1

0

0

Postincrement by Offset Nn

0

0

Postdecrement by Offset Nn

0

0

Indexed by Offset Nn

0

2

Predecrement by 1

0

2

Long Displacement

1

4

PC Relative

Long Displacement

1

2

Short Displacement

0

0

Address Register

0

0

Special

Immediate Data

1

2

Absolute Address

1

2

Immediate Short Data

0

0

Short Jump Address

0

0

Absolute Short Address

0

0

I/O Short Address

0

0

Implicit

0

0

Figure A-19 Addressing Mode Timing Summary