Typewriter User Manual

11/2/95 SECTION 1: OVERVIEW UM Rev.1.0
xiv MC68340 USER'S MANUAL MOTOROLA
TABLE OF CONTENTS (Continued)
Paragraph Page
Number Title Number
7.4.1.2 Interrupt Level Register (ILR).................................................................. 7-21
7.4.1.3 Interrupt Vector Register (IVR)................................................................ 7-21
7.4.1.4 Mode Register 1 (MR1)............................................................................ 7-22
7.4.1.5 Status Register (SR)................................................................................. 7-24
7.4.1.6 Clock-Select Register (CSR).................................................................. 7-26
7.4.1.7 Command Register (CR)......................................................................... 7-27
7.4.1.8 Receiver Buffer (RB)................................................................................. 7-30
7.4.1.9 Transmitter Buffer (TB)............................................................................. 7-30
7.4.1.10 Input Port Change Register (IPCR)........................................................ 7-31
7.4.1.11 Auxiliary Control Register (ACR)............................................................ 7-32
7.4.1.12 Interrupt Status Register (ISR)................................................................ 7-32
7.4.1.13 Interrupt Enable Register (IER)............................................................... 7-34
7.4.1.14 Input Port (IP)............................................................................................. 7-35
7.4.1.15 Output Port Control Register (OPCR).................................................... 7-35
7.4.1.16 Output Port Data Register (OP) .............................................................. 7-37
7.4.1.17 Mode Register 2 (MR2)............................................................................ 7-37
7.4.2 Programming................................................................................................. 7-40
7.4.2.1 Serial Module Initialization..................................................................... 7-40
7.4.2.2 I/O Driver Example.................................................................................... 7-40
7.4.2.3 Interrupt Handling..................................................................................... 7-40
7.5 Serial Module Initialization Sequence ......................................................... 7-46
7.5.1 Serial Module Configuration ...................................................................... 7-46
7.5.2 Serial Module Example Configuration Code .......................................... 7-47
Section 8
Timer Modules
8.1 Module Overview.............................................................................................. 8-1
8.1.1 Timer and Counter Functions..................................................................... 8-2
8.1.1.1 Prescaler and Counter............................................................................. 8-2
8.1.1.2 Timeout Detection..................................................................................... 8-2
8.1.1.3 Comparator................................................................................................ 8-2
8.1.1.4 Clock Selection Logic.............................................................................. 8-3
8.1.2 Internal Control Logic................................................................................... 8-3
8.1.3 Interrupt Control Logic ................................................................................. 8-4
8.2 Timer Modules Signal Definitions ................................................................. 8-4
8.2.1 Timer Input (TIN1, TIN2) .............................................................................. 8-5
8.2.2 Timer Gate (
TGATE1, TGATE2)................................................................ 8-6
8.2.3 Timer Output (TOUT1, TOUT2)................................................................... 8-6
8.3 Operating Modes .............................................................................................. 8-6
8.3.1 Input Capture/Output Compare.................................................................. 8-6
8.3.2 Square-Wave Generator............................................................................. 8-8
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
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