Renesas H8S/2633 Series Hardware Manual page 325

Bit : 7
DMAWER : —
Initial value : 0
R/W : —
DMAWER is an 8-bit readable/writable register that controls enabling or disabling of writes to the
DMACR, DMABCR, and DMATCR by the DTC.
DMAWER is initialized to H'00 by a reset, and in standby mode.
Bits 7 to 4—Reserved: These bits are always read as 0 and cannot be modified.
Bit 3—Write Enable 1B (WE1B): Enables or disables writes to all bits in DMACR1B, bits 11, 7,
and 3 in DMABCR, and bit 5 in DMATCR by the DTC.
Bit 3
WE1B Description
0 Writes to all bits in DMACR1B, bits 11, 7, and 3 in DMABCR, and bit 5 in DMATCR
are disabled
1 Writes to all bits in DMACR1B, bits 11, 7, and 3 in DMABCR, and bit 5 in DMATCR
are enabled
Bit 2—Write Enable 1A (WE1A): Enables or disables writes to all bits in DMACR1A, and bits
10, 6, and 2 in DMABCR by the DTC.
Bit 2
WE1A Description
0 Writes to all bits in DMACR1A, and bits 10, 6, and 2 in DMABCR are disabled
1 Writes to all bits in DMACR1A, and bits 10, 6, and 2 in DMABCR are enabled
Bit 1—Write Enable 0B (WE0B): Enables or disables writes to all bits in DMACR0B, bits 9, 5,
and 1 in DMABCR, and bit 4 in DMATCR.
Bit 1
WE0B Description
0 Writes to all bits in DMACR0B, bits 9, 5, and 1 in DMABCR, and bit 4 in DMATCR
are disabled
1 Writes to all bits in DMACR0B, bits 9, 5, and 1 in DMABCR, and bit 4 in DMATCR
are enabled
6 5 4
— — —
0 0 0
— — —
3 2
WE1B WE1A WE0B
0 0
R/W R/W
1 0
WE0A
0 0
R/W R/W
(Initial value)
(Initial value)
(Initial value)
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