VI SDRAM CONTROLLER BLOCK: SDRAM INTERFACE
S1C33L03 FUNCTION PART
EPSON
B-VI-2-21
A-1
B-VI
SDRAM
I/O Memory of SDRAM Interface
Table 2.12 shows the control bits of the SDRAM interface. These registers are mapped into area 6 (0x39FFC0 to
0x39FFCA).
Table 2.12 Control Bits of SDRAM Interface
Name
Address
Register name
Bit
Function
Setting
Init.
R/W
Remarks
–
–
SDRAR0
SDRAR1
–
SDRPC0
SDRPC1
–
D7
D6
D5–4
D3
D2
D1–0
Area 7/13 configuration
Area 8/14 configuration
reserved
#CE7/13 pin configuration
#CE8/14 pin configuration
reserved
0
0
–
0
0
–
R/W
R/W
–
R/W
R/W
–
0 when being read.
0 when being read.
039FFC0
(B)
1 SDRAM
0 Not SDRAM
1 SDRAM
0 Not SDRAM
1 #SDCE0
0 #CE7/13
1 #SDCE1
0 #CE8/14
SDRAM area
configuration
register
–
SDRENA
SDRINI
SDRSRF
SDRIS
SDRCLK
–
D7
D6
D5
D4
D3
D2–0
Enable SDRAM signals
Start SDRAM power up
Enable SDRAM self-refresh
Initial command sequence
Keep SDCLK during self-refresh
reserved
0
0
0
0
1
–
R/W
R/W
R/W
R/W
R/W
–
0 when being read.
0 when being read.
039FFC1
(B)
1 Enabled
0 Disabled
1 Start
0 –
1 1 precharge
2 set reg.
3 refresh
0 1 precharge
2 refresh
3 set reg.
1 Enabled
0 Disabled
1 Kept
0 Stopped
SDRAM
control register
–
–
–
–
SDRCA1
SDRCA0
–
SDRRA1
SDRRA0
SDRBA
–
D7
D6–5
D4
D3–2
D1
D0
reserved
SDRAM page size
(column range)
reserved
SDRAM row addressing range
Number of SDRAM banks
reserved
–
0
0
–
0
0
0
–
–
R/W
–
R/W
R/W
–
0 when being read.
0 when being read.
0 when being read.
039FFC2
(B)
1 4 banks
0 2 banks
SDRAM
address
configuration
register
1
1
0
0
1
0
1
0
SDRRA[1:0] Addressing range
reserved
8K (SDA[12:0])
4K (SDA[11:0])
2K (SDA[10:0])
1
1
0
0
1
0
1
0
SDRCA[1:0]
Page size
reserved
1K (SDA[9:0])
512 (SDA[8:0])
256 (SDA[7:0])
–
–
–
–
SDRCL1
SDRCL0
–
SDRBL1
SDRBL0
–
D7
D6–5
D4
D3–2
D1–0
reserved
SDRAM CAS latency
reserved
SDRAM burst length
reserved
–
1
1
–
1
1
–
–
R/W
–
R/W
–
0 when being read.
0 when being read.
0 when being read.
039FFC3
(B)
SDRAM
mode set-up
register
1
0
SDRCL[1:0]
CAS latency
2 CAS latency
1
1
0
0
1
0
1
0
SDRBL[1:0]
Burst length
8
4
2
1
SDRTRAS2
SDRTRAS1
SDRTRAS0
SDRTRP1
SDRTRP0
SDRTRC2
SDRTRC1
SDRTRC0
D7–5
D4–3
D2–0
SDRAM t
RAS
spec
SDRAM t
RP
spec
SDRAM t
RC
spec
0
0
0
0
0
0
0
0
R/W
R/W
R/W
039FFC4
(B)
SDRAM
timing set-up
register 1
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
SDRTRAS[2:0] Number of clocks
7
6
5
4
3
2
1
8
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
SDRTRC[2:0] Number of clocks
7
6
5
4
3
2
1
8
1
1
0
0
1
0
1
0
SDRTRP[1:0] Number of clocks
3
2
1
4
Summary of Contents for CMOS 32-Bit Single Chip Microcomputer S1C33L03
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Page 15: ...S1C33L03 PRODUCT PART ...
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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 ...
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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 ...
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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 ...
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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 ...
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Page 531: ...S1C33L03 FUNCTION PART VII LCD CONTROLLER BLOCK ...
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Page 579: ...S1C33L03 FUNCTION PART Appendix I O MAP ...
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