M32C80 Datasheet, PDF (132/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
12. DMAC
DMA Mode Register 0⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
DMD0
Address
(CPU Internal Register)
After Reset
0016
Bit
Symbol
Bit Name
Function
RW
b1 b0
MD00
0 0: DMA disabled
RW
Channel 0 Transfer _{0 1: Single transfer}
Mode Select Bit
1 0: Do not set to this value
MD01
1 1: Repeat transfer
RW
BW0 ^{Channel 0 Transfer 0: 8 bits}
RW
Unit Select Bit
1: 16 bits
RW0
Channel 0 Transfer 0: Fixed address to memory (forward direction) _RW
Direction Select Bit 1: Memory (forward direction) to fixed address
b5 b4
MD10
0 0: DMA disabled
RW
Channel 1 Transfer _{0 1: Single transfer}
Mode Select Bit
MD11
1 0: Do not set to this value
RW
1 1: Repeat transfer
BW1 ^{Channel 1 Transfer 0: 8 bits}
RW
Unit Select Bit
1: 16 bits
RW1
Channel 1 Transfer 0: Fixed address to memory (forward direction) _RW
Direction Select Bit 1: Memory (forward direction) to fixed address
NOTE:
1. Use the LDC instruction to set the DMD0 register.
DMA Mode Register 1⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
DMD1
Address
(CPU internal register)
After Reset
0016
Bit
Symbol
Bit Name
Function
RW
b1 b0
MD20
0 0: DMA disabled
RW
Channel 2 Transfer _{0 1: Single transfer}
Mode Select Bit
1 0: Do not set to this value
MD21
1 1: Repeat transfer
RW
BW2 ^{Channel 2 Transfer 0: 8 bits}
RW
Unit Select Bit
1: 16 bits
RW2
Channel 2 Transfer
Direction Select Bit
0: Fixed address to memory (forward direction)
1: Memory (forward direction) to fixed address
RW
b5 b4
MD30
0 0 : DMA disabled
RW
Channel 3 Transfer _{0 1 : Single transfer}
Mode Select Bit
MD31
1 0 : Do not set to this value
RW
1 1 : Repeat transfer
Channel 3 Transfer 0: 8 bits
BW3 _{Unit Select Bit}
1: 16 bits
RW
RW3
Channel 3 Transfer
Direction Select Bit
0: Fixed address to memory (forward direction)
1: Memory (forward direction) to fixed address
RW
NOTE:
1. Use the LDC instruction to set the DMD1 register.
Figure 12.3 DMD0 and DMD1 Registers
Rev. 1.00 Nov. 01, 2005 Page 113 of 330
REJ09B0271-0100