II CORE BLOCK: BCU (Bus Control Unit)
B-II-4-14
EPSON
S1C33L03 FUNCTION PART
For information on memory connection, see Figure 4.18.
Byte 1
15
Data bus
0
#WRL
0
0
#WRH
0
0
A0
0
0
A1
0
1
No.
1
2
Byte 0
Byte 3
Byte 2
Byte 3
Byte 2
Byte 1
Byte 0
31
0
A[1:0]=10
A[1:0]=00
15
0
1
2
15
0
Source (general-purpose register)
Destination (16-bit device)
Bus operation
Little-endian
Byte 3
15
Data bus
0
#WRL
0
0
#WRH
0
0
A0
0
0
A1
0
1
No.
1
2
Byte 2
Byte 1
Byte 0
Byte 3
Byte 2
Byte 1
Byte 0
31
0
A[1:0]=00
A[1:0]=10
15
0
2
1
15
0
Source (general-purpose register)
Destination (16-bit device)
Bus operation
Big-endian
Figure 4.5 Word Data Writing to a 16-bit Device
Byte 1
15
Data bus
0
#WRL
1
1
#WRH
1
1
A0
0
0
A1
0
1
No.
1
2
Byte 0
Byte 3
Byte 2
Bus operation
1
2
Byte 3
Byte 2
Byte 1
Byte 0
31
0
Destination (general-purpose register)
A[1:0]=10
A[1:0]=00
Source (16-bit device)
15
0
15
0
Little-endian
Byte 3
15
Data bus
0
#WRL
1
1
#WRH
1
1
A0
0
0
A1
0
1
No.
1
2
Byte 2
Byte 1
Byte 0
Bus operation
2
1
Byte 3
Byte 2
Byte 1
Byte 0
31
0
Destination (general-purpose register)
A[1:0]=00
A[1:0]=10
Source (16-bit device)
15
0
15
0
Big-endian
Figure 4.6 Word Data Reading from a 16-bit Device
Byte 1
15
Data bus
0
#WRL
0
#WRH
0
A0
0
A1
∗
No.
1
Byte 0
Byte 3
Byte 2
Byte 1
Byte 0
31
0
A[1:0]=
∗
0
0
1
15
Source (general-purpose register)
Destination (16-bit device)
Bus operation
Little-endian
Byte 1
15
Data bus
0
#WRL
0
#WRH
0
A0
0
A1
∗
No.
1
Byte 0
Byte 3
Byte 2
Byte 1
Byte 0
31
0
A[1:0]=
∗
0
0
1
15
Source (general-purpose register)
Destination (16-bit device)
Bus operation
Big-endian
Figure 4.7 Half-word Data Writing to a 16-bit Device
Byte 1
15
Data bus
0
#WRL
1
#WRH
1
A0
0
A1
∗
No.
1
Byte 0
Bus operation
1
Sign or Zero extension
Byte 1
Byte 0
31
0
Destination (general-purpose register)
A[1:0]=
∗
0
Source (16-bit device)
0
15
Little-endian
Byte 1
15
Data bus
0
#WRL
1
#WRH
1
A0
0
A1
∗
No.
1
Byte 0
Bus operation
1
Sign or Zero extension
Byte 1
Byte 0
31
0
Destination (general-purpose register)
A[1:0]=
∗
0
Source (16-bit device)
0
15
Big-endian
Figure 4.8 Half-word Data Reading from a 16-bit Device
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 ...
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