II CORE BLOCK: BCU (Bus Control Unit)
B-II-4-40
EPSON
S1C33L03 FUNCTION PART
A10DRA: Area 10 burst ROM selection (D8) / Areas 10–9 set-up register (0x48126)
A9DRA: Area 9 burst ROM selection (D7) / Areas 10–9 set-up register (0x48126)
Set areas 10 and 9 for use of burst ROM.
Write "1": Burst ROM is used
Write "0": Burst ROM is not used
Read: Valid
When using burst ROM, write "1" to the control bit. The ordinary SRAM interface is selected by writing "0" to the
bit.
Area 9 can only be used when the CEFUNC = "00".
At cold start, these bits are set to "0" (burst ROM not used). At hot start, the bits retain their status before being
initialized.
RBCLK: BCLK output control (DF) / Bus control register (0x4812E)
Control the bus clock BCLK to enable or disable external output.
Write "1": Fixed at high level
Write "0": Output enabled
Read: Valid
To stop outputting the bus clock from the BCLK pin, write "1" to RBCLK. When the clock output is stopped, the
BCLK pin is fixed at high level. The bus clock output from the BCLK pin is enabled by writing "0" to RBCLK.
The bus clock output from the BCLK pin also is stopped in the HALT2 and the SLEEP modes.
At cold start, the RBCLK is set to "0" (output enabled). At hot start, RBCLK retains its status before being
initialized.
RBST8: Burst mode selection (DD) / Bus control register (0x4812E)
Set the operation mode during a burst read.
Write "1": 8-successive-burst mode
Write "0": 4-successive-burst mode
Read: Valid
The 8-successive-burst mode is selected by writing "1" to RBST8 and the 4-successive-burst mode is selected by
writing "0" to RBST8. This setting is valid when areas 10 and 9 are set for burst ROM, and the setting is applied to
both areas simultaneously.
At cold start, RBST8 is set to "0" (4-successive-burst mode). At hot start, RBST8 retains its status before being
initialized.
REDO: Page mode selection (DC) / Bus control register (0x4812E)
Select the page mode of DRAM.
Write "1": EDO-page mode
Write "0": Fast-page mode
Read: Valid
When using EDO DRAM, write "1" to REDO to select the EDO-page mode.
The contents set here are applied to all of areas 14, 13, 8, and 7 that are set for DRAM.
At cold start, REDO is set to "0" (fast-page mode). At hot start, REDO retains its status before being initialized.
Summary of Contents for CMOS 32-Bit Single Chip Microcomputer S1C33L03
Page 4: ......
Page 14: ......
Page 15: ...S1C33L03 PRODUCT PART ...
Page 16: ......
Page 147: ...S1C33L03 FUNCTION PART ...
Page 148: ......
Page 149: ...S1C33L03 FUNCTION PART I OUTLINE ...
Page 150: ......
Page 152: ...I OUTLINE INTRODUCTION B I 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 162: ...I OUTLINE LIST OF PINS B I 3 8 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 163: ...S1C33L03 FUNCTION PART II CORE BLOCK ...
Page 164: ......
Page 166: ...II CORE BLOCK INTRODUCTION B II 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 172: ...II CORE BLOCK CPU AND OPERATING MODE B II 2 6 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 176: ...II CORE BLOCK INITIAL RESET B II 3 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 224: ...II CORE BLOCK BCU Bus Control Unit B II 4 48 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 262: ...II CORE BLOCK DBG Debug Unit B II 7 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 263: ...S1C33L03 FUNCTION PART III PERIPHERAL BLOCK ...
Page 264: ......
Page 266: ...III PERIPHERAL BLOCK INTRODUCTION B III 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 322: ...III PERIPHERAL BLOCK WATCHDOG TIMER B III 5 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 415: ...S1C33L03 FUNCTION PART IV ANALOG BLOCK ...
Page 416: ......
Page 418: ...IV ANALOG BLOCK INTRODUCTION B IV 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 434: ...IV ANALOG BLOCK A D CONVERTER B IV 2 16 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 435: ...S1C33L03 FUNCTION PART V DMA BLOCK ...
Page 436: ......
Page 438: ...V DMA BLOCK INTRODUCTION B V 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 492: ...V DMA BLOCK IDMA Intelligent DMA B V 3 18 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Page 493: ...S1C33L03 FUNCTION PART VI SDRAM CONTROLLER BLOCK ...
Page 494: ......
Page 531: ...S1C33L03 FUNCTION PART VII LCD CONTROLLER BLOCK ...
Page 532: ......
Page 579: ...S1C33L03 FUNCTION PART Appendix I O MAP ...
Page 580: ......