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Paragraph
Number
TABLE OF CONTENTS (Continued)
Title
Page
Number
2.15
Test Signals ....................................................................................................... 2-13
2.15.1
Test Clock (TCK) ........................................................................................... 2-13
2.15.2
Test Mode Select (TMS) .............................................................................. 2-13
2.15.3
Test Data In (TO I) .......................................................................................... 2-13
2.15.4
Test Data Out (TOO) ..................................................................................... 2-13
2.16
Synthesizer Power (VCCSYN) .......................................................................... 2-13
2.17
System Power and Ground (Vee and GNO) ................................................ 2-13
2.18
Signal Summary ............................................................................................... 2-13
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
3.1.6
3.1.7
3.1.7.1
3.1.7.2
3.1.7.3
3.2
3.2.1
3.2.2
3.2.3
3.2.3.1
3.2.3.2
3.2.3.3
3.2.3.4
3.2.3.5
3.2.3.6
3.2.3.7
3.2.4
3.2.5
3.2.6
3.3
3.3.1
3.3.2
3.3.3
MOTOROLA
Section 3
Bus Operation
Bus Transfer Signals ........................................................................................ 3-1
Bus Control Signals ..................................................................................... 3-2
Function Code Signals ................................................................................ 3-3
Address Bus (A31-AO) ................................................................................ 3-4
Address Strobe (AS) .................................................................................... 3-4
Data Bus (015-00) ...................................................................................... 3-4
Data Strobe (OS) ........................................................................................... 3-4
Bus Cycle Termination Signals .................................................................. 3-4
Data Transfer and Size Acknowledge Signals
(OSACK1 and OSACKO) ...................................................................... 3-4
Bus Error (BERR) ...................................................................................... 3-5
Autovector (AVEC) .................................................................................... 3-5
Data Transfer Mechanism ............................................................................... 3-5
Dynamic Bus Sizing ..................................................................................... 3-5
Misaligned Operands ................................................................................... 3-7
Operand Transfer Cases ............................................................................. 3-7
Byte Operand to 8-Bit Port, Odd or Even (AO
=
X) .............................. 3-7
Byte Operand to 16-Bit Port, Even (AO
=
0) .......................................... 3-8
Byte Operand to 16-Bit Port, Odd (AO
=
1) ........................................... 3-9
Word Operand to 8-Bit Port, Aligned ..................................................... 3-9
Word Operand to 16-Bit Port, Aligned ................................................... 3-10
Long-word Operand to 8-Bit Port, Aligned ........................................... 3-10
Long-Word Operand to 16-Bit Port, Aligned ........................................ 3-12
Bus Operation ................................................................................................ 3-14
Synchronous Operation with OSACKx ...................................................... 3-14
Fast Termination Cycles ............................................................................... 3-15
Data Transfer Cycles ........................................................................................ 3-16
Read Cycle ..................................................................................................... 3-16
Write Cycle ..................................................................................................... 3-18
Read-Modify-Write Cycle ............................................................................. 3-19
MC68340 USER'S MANUAL
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