VI SDRAM CONTROLLER BLOCK: SDRAM INTERFACE
B-VI-2-28
EPSON
S1C33L03 FUNCTION PART
SDRIS: Initial command sequence (D4) / SDRAM control register (0x39FFC1)
Select the SDRAM initialization sequence.
Write "1": 1. Precharge
→
2. Mode Register Set
→
3. Refresh
Write "0": 1. Precharge
→
2. Refresh
→
3. Mode Register Set
Read: Valid
In accordance with the specifications of the SDRAM, select a sequence to determine the order the commands are
sent to initialize the SDRAM. Initialization of the SDRAM is initiated by writing "1" to SDRINI (D6/0x39FFC1).
At cold start, SDRIS is set to "0" (1. Precharge
→
2. Refresh
→
3. Mode Register Set). At hot start, SDRIS retains
its status before being initialized.
SDRCLK: Keep SDRAM clock during self-refresh (D3) / SDRAM control register (0x39FFC1)
Select whether or not to stop the SDRAM clock during self-refresh.
Write "1": Kept outputting
Write "0": Stopped
Read: Valid
Writing "0" to SDRCLK causes the SDRAM clock output from the BCLK pin to stop and to remain off while the
SDRAM is self-refreshed. This helps to reduce the chip's current consumption. Note that when the bus is released,
the BCLK pin goes into a high-impedance state.
If SDRCLK = "1", the SDRAM clock is always output from the BCLK pin even while the SDRAM is self-
refreshed or the bus is released.
At cold start, SDRCLK is set to "1" (kept outputting). At hot start, SDRCLK retains its status before being
initialized.
SDRCA1–SDRCA0: SDRAM page size (D[6:5]) / SDRAM address configuration register (0x39FFC2)
Set the SDRAM page size (column addressing range).
Table 2.15 Setting Column Addressing Range (Page Size)
SDRCA1
SDRCA0
Column size
Column address (pin) used
0
0
256
SDA0–SDA7 (default)
0
1
512
SDA0–SDA8
1
0
1,024
SDA0–SDA9
1
1
–
–
The contents set here are applied to all of areas 7, 8, 13, and 14 that are set for SDRAM.
SDRCA can be read to obtain its set value.
At cold start, SDRCA is set to "0" (256). At hot start, SDRCA retain its status before being initialized.
SDRRA1–SDRRA0:
SDRAM row addressing range (D[3:2]) / SDRAM address configuration register (0x39FFC2)
Set the SDRAM row addressing range.
Table 2.16 Setting Row Addressing Range
SDRRA1
SDRRA0
Row size
Row address (pin) used
0
0
2K
SDA0–SDA10 (default)
0
1
4K
SDA0–SDA11
1
0
8K
SDA0–SDA12
1
1
–
–
The contents set here are applied to all of areas 7, 8, 13, and 14 that are set for SDRAM.
SDRRA can be read to obtain its set value.
At cold start, SDRRA is set to "0" (2K). At hot start, SDRRA retain its status before being initialized.
Содержание CMOS 32-Bit Single Chip Microcomputer S1C33L03
Страница 4: ......
Страница 14: ......
Страница 15: ...S1C33L03 PRODUCT PART ...
Страница 16: ......
Страница 147: ...S1C33L03 FUNCTION PART ...
Страница 148: ......
Страница 149: ...S1C33L03 FUNCTION PART I OUTLINE ...
Страница 150: ......
Страница 152: ...I OUTLINE INTRODUCTION B I 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 162: ...I OUTLINE LIST OF PINS B I 3 8 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 163: ...S1C33L03 FUNCTION PART II CORE BLOCK ...
Страница 164: ......
Страница 166: ...II CORE BLOCK INTRODUCTION B II 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 172: ...II CORE BLOCK CPU AND OPERATING MODE B II 2 6 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 176: ...II CORE BLOCK INITIAL RESET B II 3 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 224: ...II CORE BLOCK BCU Bus Control Unit B II 4 48 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 250: ...II CORE BLOCK ITC Interrupt Controller B II 5 26 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 262: ...II CORE BLOCK DBG Debug Unit B II 7 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 263: ...S1C33L03 FUNCTION PART III PERIPHERAL BLOCK ...
Страница 264: ......
Страница 266: ...III PERIPHERAL BLOCK INTRODUCTION B III 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 292: ...III PERIPHERAL BLOCK 8 BIT PROGRAMMABLE TIMERS B III 3 18 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 318: ...III PERIPHERAL BLOCK 16 BIT PROGRAMMABLE TIMERS B III 4 26 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 322: ...III PERIPHERAL BLOCK WATCHDOG TIMER B III 5 4 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 414: ...III PERIPHERAL BLOCK INPUT OUTPUT PORTS B III 9 26 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 415: ...S1C33L03 FUNCTION PART IV ANALOG BLOCK ...
Страница 416: ......
Страница 418: ...IV ANALOG BLOCK INTRODUCTION B IV 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 434: ...IV ANALOG BLOCK A D CONVERTER B IV 2 16 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 435: ...S1C33L03 FUNCTION PART V DMA BLOCK ...
Страница 436: ......
Страница 438: ...V DMA BLOCK INTRODUCTION B V 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 492: ...V DMA BLOCK IDMA Intelligent DMA B V 3 18 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 493: ...S1C33L03 FUNCTION PART VI SDRAM CONTROLLER BLOCK ...
Страница 494: ......
Страница 496: ...VI SDRAM CONTROLLER BLOCK INTRODUCTION B VI 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 531: ...S1C33L03 FUNCTION PART VII LCD CONTROLLER BLOCK ...
Страница 532: ......
Страница 534: ...VII LCD CONTROLLER BLOCK INTRODUCTION B VII 1 2 EPSON S1C33L03 FUNCTION PART THIS PAGE IS BLANK ...
Страница 579: ...S1C33L03 FUNCTION PART Appendix I O MAP ...
Страница 580: ......