Toshiba TX39 user manual Bus Interface Unit Bus Controller / Write Buffer

CONTENTS

TMPR3901F

Chapter 1	Introduction---------------------------------------------------------------------------		201
1.1	Features ------------------------------------------------------------------------------		201
1.2	Internal Blocks-----------------------------------------------------------------------		203
Chapter 2	Configuration ------------------------------------------------------------------------		205
2.1	R3900 Processor Core------------------------------------------------------------		205
2.1.1		Instruction limitations -----------------------------------------------------------------------	206
2.1.2		Address mapping ----------------------------------------------------------------------------	206
2.2	Clock Generator --------------------------------------------------------------------		206
2.3	Bus Interface Unit (Bus Controller / Write Buffer) --------------------------		207
2.4	Memory Protection Unit -----------------------------------------------------------		208
2.4.1		Registers---------------------------------------------------------------------------------------	208
2.4.2		Memory protection exception -------------------------------------------------------------	210
2.4.3		Register address map ----------------------------------------------------------------------	211
2.5	Debug Support Unit ----------------------------------------------------------------		211
2.6	Synchronizer -------------------------------------------------------------------------		211
Chapter 3	Pins ------------------------------------------------------------------------------------		215
Chapter 4	Operations----------------------------------------------------------------------------		217
4.1	Clock-----------------------------------------------------------------------------------		217
4.2	Read Operation ---------------------------------------------------------------------		219
4.2.1		Single read ------------------------------------------------------------------------------------	219
4.2.2		Burst read--------------------------------------------------------------------------------------	221
4.3	Write Operation ---------------------------------------------------------------------		224
4.4	Interrupts------------------------------------------------------------------------------		225
4.4.1		NMI* ---------------------------------------------------------------------------------------------	225
4.4.2		INT[5:0]*----------------------------------------------------------------------------------------	226

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