II CORE BLOCK: BCU (Bus Control Unit)
B-II-4-26
EPSON
S1C33210 FUNCTION PART
Refresh RPC delay
Use RPC0 to set the RPC delay value of a refresh cycle (a delay time from the immediately preceding precharge
to the fall of #CAS).
RPC0 = "1": 2 cycles
RPC0 = "0": 1 cycle
Refresh RAS pulse width
Use RRA to set the #RAS pulse width of a CAS-before-RAS refresh cycle.
Table 4.17 Refresh RAS Pulse Width
RRA1
RRA0
Pulse width
1
1
5 cycles
1
0
4 cycles
0
1
3 cycles
0
0
2 cycles
The initial default value is 2 cycles.
Number of RAS precharge cycles
Use RPRC to choose the number of RAS precharge cycles.
Table 4.18 Number of RAS Precharge Cycles
RPRC1
RPRC0
Number of cycles
1
1
4 cycles
1
0
3 cycles
0
1
2 cycles
0
0
1 cycle
The initial default value is 1 cycle.
CAS cycle control
Use CASC to choose the number of CAS cycles when accessing DRAM.
Table 4.19 Number of CAS Cycles
CASC1
CASC0
Number of cycles
1
1
4 cycles
1
0
3 cycles
0
1
2 cycles
0
0
1 cycle
The initial default value is 1 cycle.
RAS cycle control
Use RASC to choose the number of RAS cycles when accessing DRAM.
Table 4.20 Number of RAS Cycles
RASC1
RASC0
Number of cycles
1
1
4 cycles
1
0
3 cycles
0
1
2 cycles
0
0
1 cycle
The initial default value is 1 cycle.
Summary of Contents for S1C33210
Page 4: ......
Page 13: ...S1C33210 PRODUCT PART ...
Page 14: ......
Page 124: ...APPENDIX B PIN CHARACTERISTICS A 110 EPSON S1C33210 PRODUCT PART THIS PAGE IS BLANK ...
Page 125: ...S1C33210 FUNCTION PART ...
Page 126: ......
Page 127: ...S1C33210 FUNCTION PART I OUTLINE ...
Page 128: ......
Page 130: ...I OUTLINE INTRODUCTION B I 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 138: ...I OUTLINE LIST OF PINS B I 3 6 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 139: ...S1C33210 FUNCTION PART II CORE BLOCK ...
Page 140: ......
Page 142: ...II CORE BLOCK INTRODUCTION B II 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 148: ...II CORE BLOCK CPU AND OPERATING MODE B II 2 6 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 152: ...II CORE BLOCK INITIAL RESET B II 3 4 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 234: ...II CORE BLOCK CLG Clock Generator B II 6 10 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 236: ...II CORE BLOCK DBG Debug Unit B II 7 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 237: ...S1C33210 FUNCTION PART III PERIPHERAL BLOCK ...
Page 238: ......
Page 240: ...III PERIPHERAL BLOCK INTRODUCTION B III 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 296: ...III PERIPHERAL BLOCK WATCHDOG TIMER B III 5 4 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 429: ...S1C33210 FUNCTION PART IV ANALOG BLOCK ...
Page 430: ......
Page 432: ...IV ANALOG BLOCK INTRODUCTION B IV 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 448: ...IV ANALOG BLOCK A D CONVERTER B IV 2 16 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 449: ...S1C33210 FUNCTION PART V DMA BLOCK ...
Page 450: ......
Page 452: ...V DMA BLOCK INTRODUCTION B V 1 2 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 506: ...V DMA BLOCK IDMA Intelligent DMA B V 3 18 EPSON S1C33210 FUNCTION PART THIS PAGE IS BLANK ...
Page 507: ...S1C33210 FUNCTION PART Appendix I O MAP ...
Page 508: ......
Page 557: ......