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RL78/G1H CHAPTER 16 DATA TRANSFER CONTROLLER (DTC)

R01UH0575EJ0120 Rev. 1.20 Page 532 of 920

Dec 22, 2016

16.4.3 Repeat Mode

One to 255 bytes of data are transferred by one activation. Either of the transfer source or destination should be

specified as the repeat area. The number of transfers can be 1 to 255 times. On completion of the specified

number of transfers, the DTCCTj (i = 0 to 23) register and the address specified for the repeat area are initialized

to continue transfers. When the data transfer causing the DTCCTj register value to change to 0 is performed

while the RPTINT bit in the DTCCRj register is 1 (interrupt generation enabled), the DTC generates an interrupt

request corresponding to the activation source to the interrupt controller during DTC operation, and sets the

corresponding bit among bits DTCENi0 to DTCENi7 to 0 (activation disabled). When the RPTINT bit in the

DTCCRj register is 0 (interrupt generation disabled), no interrupt request is generated even if the data transfer

causing the DTCCTj register value to change to 0 is performed. Also, bits DTCENi0 to DTCENi7 are not set to 0.

Table 16 - 8 lists Register Functions in Repeat Mode. Figure 16 - 16 shows Data Transfers in Repeat Mode.

Remark j = 0 to 23

Table 16 - 8 Register Functions in Repeat Mode

DTC block size register j DTBLSj Size of the data block to be transferred by one activation

DTC transfer count register j DTCCTj Number of data transfers

DTC transfer count reload register j

DTRLDj

This register value is reloaded to the DTCCT register

(the number of transfers is initialized).

DTC source address register j DTSARj Data transfer source address

DTC destination address register j DTDARj Data transfer destination address

Renesas RL78/G1H User Manual

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