R5F6451MLFD datasheet(18/122 Pages) RENESAS

18 / 122 page

R01DS0072EJ0120 Rev.1.20

Page 18 of 116

Aug 07, 2013

R32C/151 Group

2. Central Processing Unit (CPU)

2.2

Fast Interrupt Registers

The following three registers are provided to minimize the overhead of the interrupt sequence.

2.2.1

Save Flag Register (SVF)

This 32-bit register is used to save the flag register when a fast interrupt occurs.

2.2.2

Save PC Register (SVP)

This 32-bit register is used to save the program counter when a fast interrupt occurs.

2.2.3

Vector Register (VCT)

This 32-bit register is used to indicate a jump address when a fast interrupt occurs.

2.3

DMAC-associated Registers

There are seven types of DMAC-associated registers.

2.3.1

DMA Mode Registers (DMD0, DMD1, DMD2, and DMD3)

These 32-bit registers are used to set DMA transfer mode, bit rate, etc.

2.3.2

DMA Terminal Count Registers (DCT0, DCT1, DCT2, and DCT3)

These 24-bit registers are used to set the number of DMA transfers.

2.3.3

DMA Terminal Count Reload Registers (DCR0, DCR1, DCR2, and DCR3)

These 24-bit registers are used to set the reloaded values for DMA terminal count registers.

2.3.4

DMA Source Address Registers (DSA0, DSA1, DSA2, and DSA3)

These 32-bit registers are used to set DMA source addresses.

2.3.5

DMA Source Address Reload Registers (DSR0, DSR1, DSR2, and DSR3)

These 32-bit registers are used to set the reloaded values for DMA source address registers.

2.3.6

DMA Destination Address Registers (DDA0, DDA1, DDA2, and DDA3)

These 32-bit registers are used to set DMA destination addresses.

2.3.7

DMA Destination Address Reload Registers (DDR0, DDR1, DDR2, and

DDR3)

These 32-bit registers are used to set reloaded values for DMA destination address registers.

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