HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 178
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HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6432160.pdf
(829 pages)
- Current page: 178 of 829
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7.2.2
MRB selects the DTC operating mode.
7.2.3
SAR is a 24-bit register that designates the source address of data to be transferred by the DTC.
For word-size transfer, specify an even source address.
7.2.4
DAR is a 24-bit register that designates the destination address of data to be transferred by the
DTC. For word-size transfer, specify an even destination address.
7.2.5
CRA is a 16-bit register that designates the number of times data is to be transferred by the DTC.
In normal mode, the entire CRA functions as a 16-bit transfer counter (1 to 65536). It is
decremented by 1 every time data is transferred, and transfer ends when the count reaches H'0000.
Rev. 2.0, 08/02, page 138 of 788
Bit
7
6
5
to
0
Bit Name
CHNE
DISEL
—
DTC Mode Register B (MRB)
DTC Source Address Register (SAR)
DTC Destination Address Register (DAR)
DTC Transfer Count Register A (CRA)
Initial Value
Undefined
Undefined
Undefined
R/W
—
—
—
Description
DTC Chain Transfer Enable
When this bit is set to 1, a chain transfer will be
performed. For details, refer to section 7.5.4, Chain
Transfer.
In data transfer with CHNE set to 1, determination of the
end of the specified number of data transfers, clearing
of the interrupt source flag, and clearing of DTCER are
not performed.
DTC Interrupt Select
When this bit is set to 1, a CPU interrupt request is
generated every time data transfer ends (the DTC
clears the interrupt source flag for the activation
source). When this bit is cleared to 0, a CPU interrupt
request is generated only when the specified number of
data transfer ends (the DTC does not clear the interrupt
source flag for the activation source).
Reserved
These bits have no effect on DTC operation. Only 0
should be written to these bits.
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