HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 192
HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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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
2. Set the start address of the register information at the DTC vector address.
3. Set the corresponding bit in DTCER to 1.
4. Set the SCI to the appropriate receive mode. Set the RIE bit in SCR to 1 to enable the reception
5. Each time the reception of one byte of data has been completed on the SCI, the RDRF flag in
6. When CRA becomes 0 after 128 data transfers have been completed, the RDRF flag is held at
Rev. 2.0, 08/02, page 152 of 788
= 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
SCI, RDR address in SAR, the start address of the RAM area where the data will be received
in DAR, and 128 (H'0080) in CRA. CRB can be set to any value.
complete (RXI) interrupt. Since the generation of a receive error during the SCI reception
operation will disable subsequent reception, the CPU should be enabled to accept receive error
interrupts.
SSR is set to 1, an RXI interrupt is generated, and the DTC is activated. The receive data is
transferred from RDR to RAM by the DTC. DAR is incremented and CRA is decremented.
The RDRF flag is automatically cleared to 0.
1, the DTCE bit is cleared to 0, and an RXI interrupt request is sent to the CPU. The interrupt
handling routine will perform wrap-up processing.
Examples of Use of DTC
Normal Mode
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