II CORE BLOCK: ITC (Interrupt Controller)
B-II-5-4
EPSON
S1C33L03 FUNCTION PART
Trap Table
The C33 Core Block allows the base (starting) address of the trap table to be set by the TTBR register.
TTBR0 (D[9:0]) / TTBR low-order register (0x48134): Trap table base address [9:0] (fixed at "0")
TTBR1 (D[F:A]) / TTBR low-order register (0x48134): Trap table base address [15:10]
TTBR2 (D[B:0]) / TTBR high-order register (0x48136): Trap table base address [27:16]
TTBR3 (D[F:C]) / TTBR high-order register (0x48136): Trap table base address [31:28] (fixed at "0")
After an initial reset, the TTBR register is set to 0x0C00000.
Therefore, even when the trap table position is changed, it is necessary that at least the reset vector be written to the
above address.
TTBR0 and TTBR3 are read-only bits which are fixed at "0". Therefore, the trap table starting address always
begins with a 1KB boundary address.
The TTBR register is normally write-protected to prevent them from being inadvertently rewritten. To remove this
write protection function, another register, TBRP (D[7:0]) / TTBR write-protect register (0x4812D [byte]), is
provided. A write to the TTBR register is enabled by writing "0x59" to TBRP and is disabled back again by a write
to the most significant byte of the TTBR register (0x48137). Consequently, a write to the TTBR register needs to
begin with the low-order half-word first. However, since an occurrence of NMI or the like between writes of the
low-order and high-order half-words would cause a malfunction, it is recommended that the register be written in
words.
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 ...
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Page 149: ...S1C33L03 FUNCTION PART I OUTLINE ...
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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 ...
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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 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 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 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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