R01UH0823EJ0100 Rev.1.00
Page 386 of 1823
Jul 31, 2019
RX23W Group
19. Data Transfer Controller (DTCa)
19.2.8
DTC Vector Base Register (DTCVBR)
The DTCVBR register is used to set the base address for calculating the address to which the DTC vector is allocated.
Writing to the upper 4 bits (b31 to b28) is ignored, and the address of this register is extended by the value specified by
b27. The lower 10 bits are reserved and the values are fixed to 0. Write 0 to the lower 10 bits if necessary.
It can be set in the range of 0000 0000h to 07FF FC00h and F800 0000h to FFFF FC00h in 1-Kbyte units.
19.2.9
DTC Address Mode Register (DTCADMOD)
DTCADMOD register is used to specify the area accessible by the DTC.
SHORT Bit (Short-Address Mode Set)
This bit is used to select address mode of registers SAR and DAR.
Full-address mode allows the DTC to access to a 4-Gbyte space (0000 0000h to FFFF FFFFh).
Short-address mode allows the DTC to access to a 16-Mbyte space (0000 0000h to 007F FFFFh and FF80 0000h to
FFFF FFFFh).
Address(es): DTC.DTCVBR 0008 2404h
b31
b30
b29
b28
b27
b26
b25
b24
b23
b22
b21
b20
b19
b18
b17
b16
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Address(es): DTC.DTCADMOD 0008 2408h
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
—
—
—
SHORT
Value after reset:
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
Short-Address Mode Set
0: Full-address mode
1: Short-address mode
R/W
b7 to b1
—
Reserved
These bits are read as 0. The write value should be 0.
R/W