Table Of Contents; Contents - Fujitsu MB88121 Application Note

Contents

REVISION HISTORY ............................................................................................................ 2
WARRANTY AND DISCLAIMER ......................................................................................... 3
CONTENTS .......................................................................................................................... 4
1 INTRODUCTION.............................................................................................................. 6
2 HARDWARE .................................................................................................................... 7
2.1 Power supply........................................................................................................... 7
2.2 Reset....................................................................................................................... 8
2.3 Clock connection ..................................................................................................... 8
2.3.1 MCU Clock ................................................................................................ 8
2.3.2 CC Clock ................................................................................................... 8
2.4 Operation Mode of MCU and CC............................................................................. 8
2.4.1 MCU operation mode................................................................................. 8
2.4.2 CC operation mode.................................................................................. 10
2.4.2.1
2.4.2.2
2.5 Bus interface connection ....................................................................................... 10
2.5.1 16-bit none multiplexed mode .................................................................. 11
2.5.2 16-bit multiplexed bus interface mode...................................................... 12
2.6 Interrupts............................................................................................................... 13
2.6.1 CC interrupt ............................................................................................. 13
2.7 DMA pins............................................................................................................... 13
2.8 Stop Watch pin...................................................................................................... 13
2.9 Debug pins ............................................................................................................ 14
3 SOFTWARE................................................................................................................... 15
3.1 Bus interface setup................................................................................................ 15
3.1.1 Simplified timing diagram of the MB88121B (none multiplexed access)... 15
3.1.2 Simplified timing diagram of MB88121B (multiplexed access) ................. 17
3.1.3 Configuration registers of the external bus interface ................................ 19
3.1.3.1
3.1.3.2
3.1.3.3
3.1.3.4
3.1.3.5
MCU-AN-300016-E-V10
Interfacing MB91460 TO MB88121
Contents
None multiplexed bus interface mode ...................................... 10
Multiplexed bus interface mode ............................................... 10
Area Select Register (ASR) .................................................... 19
Area Configuration Register (ACR) .......................................... 20
Area Wait Register (AWR) ....................................................... 22
Timing example of ordinary (non-multiplexed) bus ................... 24
Timing example of multiplexed bus .......................................... 25
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