Renesas NU85E Preliminary User's Manual page 12

3.5.2 Memory controller (MEMC) control registers .................................................................................71
3.5.3 Instruction cache control registers .................................................................................................72
3.5.4 Data cache control registers ..........................................................................................................72
3.6 RCU Interface .............................................................................................................................................73
3.6.1 Outline............................................................................................................................................73
3.6.2 On-chip debugging.........................................................................................................................73
CHAPTER 4 BCU........................................................................................................................................74
4.1 Features ......................................................................................................................................................74
4.2 Memory Banks ...........................................................................................................................................74
4.3 Programmable Chip Select Function .......................................................................................................77
4.4 Programmable Peripheral I/O Area Selection Function .........................................................................83
4.5 Bus Size Setting Function.........................................................................................................................86
4.6 Endian Setting Function............................................................................................................................87
4.6.1 Endian configuration register (BEC)...............................................................................................87
4.6.2 Usage restrictions concerning big endian format with NEC development tools.............................88
4.7 Cache Configuration..................................................................................................................................90
4.8 BCU-Related Register Setting Examples.................................................................................................91
4.9 Data Transfer Using VSB...........................................................................................................................94
4.9.1 Data transfer example....................................................................................................................94
4.9.2 Control signals output by bus master.............................................................................................95
4.9.3 Read/write timing ...........................................................................................................................98
4.9.4 VSB read/write timing example ....................................................................................................111
4.9.5 Reset timing .................................................................................................................................113
4.9.6 Bus master transition ...................................................................................................................114
4.9.7 Misalign access timing .................................................................................................................116
CHAPTER 5 BBR......................................................................................................................................118
5.1 Programmable Peripheral I/O Area.........................................................................................................120
5.2 Wait Insertion Function ...........................................................................................................................123
5.3 Retry Function..........................................................................................................................................125
5.4 NPB Read/Write Timing ...........................................................................................................................126
5.5 Precautions ..............................................................................................................................................135
CHAPTER 6 STBC....................................................................................................................................136
6.1 Power Save Function...............................................................................................................................136
6.2 Control Registers.....................................................................................................................................137
6.2.1 Power save control register (PSC)...............................................................................................137
6.2.2 Command register (PRCMD) .......................................................................................................139
6.3 HALT Mode ...............................................................................................................................................140
6.4 Software STOP Mode...............................................................................................................................141
6.5 Hardware STOP Mode..............................................................................................................................143
6.6 Clock Control in Software/Hardware STOP Mode.................................................................................144
CHAPTER 7 DMAC...................................................................................................................................149
7.1 Features ....................................................................................................................................................149
7.2 Configuration ...........................................................................................................................................150
7.3 Transfer Objects ......................................................................................................................................151
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Preliminary User's Manual A14874EJ3V0UM