h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 216

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 7 Data Transfer Controller (DTC)
7.6
7.6.1
The procedure for using the DTC with interrupt activation is as follows:
1. Set the MRA, MRB, SAR, DAR, CRA, and CRB register information in on-chip RAM.
2. Set the start address of the register information in the DTC vector address.
3. Set the corresponding bit in DTCER to 1.
4. Set the enable bits for the interrupt sources to be used as the activation sources to 1. The DTC
5. After one data transfer has been completed, or after the specified number of data transfers have
7.6.2
The procedure for using the DTC with software activation is as follows:
1. Set the MRA, MRB, SAR, DAR, CRA, and CRB register information in on-chip RAM.
2. Set the start address of the register information in the DTC vector address.
3. Check that the SWDTE bit is 0.
4. Write 1 to the SWDTE bit and the vector number to DTVECR.
5. Check the vector number written to DTVECR.
6. After one data transfer has been completed, if the DISEL bit is 0 and a CPU interrupt is not
7.7
7.7.1
An example is shown in which the DTC is used to receive 128 bytes of data via the SCI.
1. Set MRA to a fixed source address (SM1 = SM0 = 0), incrementing destination address (DM1
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is activated when an interrupt used as an activation source is generated.
been completed, the DTCE bit is cleared to 0 and a CPU interrupt is requested. If the DTC is to
continue transferring data, set the DTCE bit to 1.
requested, the SWDTE bit is cleared to 0. If the DTC is to continue transferring data, set the
SWDTE bit to 1. When the DISEL bit is 1 or after the specified number of data transfers have
been completed, the SWDTE bit is held at 1 and a CPU interrupt is requested.
= 1, DM0 = 0), normal mode (MD1 = MD0 = 0), and byte size (Sz = 0). The DTS bit can have
any value. Set MRB for one data transfer by one interrupt (CHNE = 0, DISEL = 0). Set the
Procedures for Using DTC
Activation by Interrupt
Activation by Software
Examples of Use of the DTC
Normal Mode