H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 339
H8S-2350
Manufacturer Part Number
H8S-2350
Description
16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.H8S-2350.pdf
(1025 pages)
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Section 8 Data Transfer Controller (DTC)
Source flag cleared
Clear
controller
Clear
DTCER
Clear request
Select
On-chip
DTC
supporting
module
IRQ interrupt
Interrupt
request
Interrupt controller
CPU
DTVECR
Interrupt mask
Figure 8.3 Block Diagram of DTC Activation Source Control
When an interrupt has been designated a DTC activation source, existing CPU mask level and
interrupt controller priorities have no effect. If there is more than one activation source at the same
time, the DTC operates in accordance with the default priorities.
8.3.3
DTC Vector Table
Figure 8.4 shows the correspondence between DTC vector addresses and register information.
Table 8.4 shows the correspondence between activation, vector addresses, and DTCER bits. When
the DTC is activated by software, the vector address is obtained from: H'0400 + (DTVECR[6:0]
<< 1) (where << 1 indicates a 1-bit left shift). For example, if DTVECR is H'10, the vector
address is H'0420.
The DTC reads the start address of the register information from the vector address set for each
activation source, and then reads the register information from that start address. The register
information can be placed at predetermined addresses in the on-chip RAM. The start address of
the register information should be an integral multiple of four.
The configuration of the vector address is the same in both normal and advanced modes, a 2-byte
unit being used in both cases. These two bytes specify the lower bits of the address in the on-chip
RAM.
Rev. 3.00 Sep 15, 2006 page 305 of 988
REJ09B0330-0300
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