Table of Contents
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11/2/95
TABLE OF CONTENTS (Continued)
Paragraph
Number
8.3.3
Variable Duty-Cycle Square-Wave Generator........................................ 8-9
8.3.4
Variable-Width Single-Shot Pulse Generator......................................... 8-10
8.3.5
Pulse-Width Measurement.......................................................................... 8-12
8.3.6
Period Measurement.................................................................................... 8-13
8.3.7
Event Count ................................................................................................... 8-14
8.3.8
Timer Bypass................................................................................................. 8-16
8.3.9
Bus Operation................................................................................................ 8-17
8.3.9.1
Read Cycles............................................................................................... 8-17
8.3.9.2
Write Cycles............................................................................................... 8-17
8.3.9.3
Interrupt Acknowledge Cycles................................................................ 8-17
8.4
Register Description......................................................................................... 8-17
8.4.1
Module Configuration Register (MCR)...................................................... 8-18
8.4.2
Interrupt Register (IR) ................................................................................... 8-20
8.4.3
Control Register (CR)................................................................................... 8-20
8.4.4
Status Register (SR)..................................................................................... 8-23
8.4.5
Counter Register (CNTR) ............................................................................ 8-25
8.4.6
Preload 1 Register (PREL1)........................................................................ 8-25
8.4.7
Preload 2 Register (PREL2)........................................................................ 8-26
8.4.8
Compare Register (COM)............................................................................ 8-26
8.5
Timer Module Initialization Sequence.......................................................... 8-27
8.5.1
Timer Module Configuration....................................................................... 8-27
8.5.2
Timer Module Example Configuration Code........................................... 8-28
9.1
Overview............................................................................................................. 9-1
9.2
TAP Controller................................................................................................... 9-2
9.3
Boundary Scan Register ................................................................................. 9-3
9.4
Instruction Register........................................................................................... 9-9
9.4.1
EXTEST (000) ............................................................................................... 9-10
9.4.2
SAMPLE/PRELOAD (001) .......................................................................... 9-10
9.4.3
BYPASS (X1X, 101)..................................................................................... 9-11
9.4.4
HI-Z (100) ....................................................................................................... 9-11
9.5
MC68340 Restrictions...................................................................................... 9-11
9.6
Non-IEEE 1149.1 Operation........................................................................... 9-12
10.1
Minimum System Configuration................................................................... 10-1
10.1.1
Processor Clock Circuitry.......................................................................... 10-1
MOTOROLA
Freescale Semiconductor, Inc.
SECTION 1: OVERVIEW
Title
Section 9
IEEE 1149.1 Test Access Port
Section 10
Applications
MC68340 USER'S MANUAL
For More Information On This Product,
Go to: www.freescale.com
UM Rev 1
P a g e
Number
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