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PDF ARM940T Data sheet ( Hoja de datos )
| Número de pieza | ARM940T | |
| Descripción | Manual | |
| Fabricantes | ARM | |
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ARM940T
(Rev 2)
Technical Reference Manual
Copyright © 1999, 2000 ARM Limited. All rights reserved.
ARM DDI 0144B
1 page  
www.DataSheet4U.com
Contents
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Appendix A
TrackingICE
9.1 About TrackingICE ...................................................................................... 9-2
9.2 Timing requirements ................................................................................... 9-3
9.3 TrackingICE outputs ................................................................................... 9-4
Test Support
10.1 About test support ..................................................................................... 10-2
10.2 Scan chain 0 bit order ............................................................................... 10-4
Instruction Cycle Summary and Interlocks
11.1 About the instruction cycle summary ........................................................ 11-2
11.2 Instruction cycle times ............................................................................... 11-3
11.3 Interlocks ................................................................................................... 11-6
AC Characteristics
12.1 ARM940T timing diagrams ........................................................................ 12-2
12.2 ARM940T timing parameters .................................................................. 12-15
ARM940T Signal Descriptions
A.1 AMBA signals .............................................................................................. A-2
A.2 Coprocessor interface signals ..................................................................... A-4
A.3 JTAG and TAP controller signals ................................................................ A-5
A.4 Debug signals ............................................................................................. A-8
A.5 Miscellaneous signals ............................................................................... A-10
Glossary
Index
ARM DDI 0144B
Copyright © 1999, 2000 ARM Limited. All rights reserved.
v
5 Page 
www.DataSheet4U.com
Preface
Timing diagram conventions
This manual contains a number of timing diagrams. Figure P-1 on page xi explains the
components used in these diagrams. Any variations are clearly labeled when they occur.
Therefore, you must not attach any additional meaning unless specifically stated.
Clock
HIGH to LOW
Transient
HIGH/LOW to HIGH
Bus stable
Bus to high impedance
Bus change
High impedance to stable bus
Valid (correct) sampling point
Figure P-1 Key to timing diagram conventions
Shaded bus and signal areas are undefined, so the bus or signal can assume any value
within the shaded area at that time. The actual level is unimportant and does not affect
normal operation.
ARM DDI 0144B
Copyright © 1999, 2000 ARM Limited. All rights reserved.
xi
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