D12320VF25V Datasheet, PDF (227/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 7 Data Transfer Controller
Bit 14—Module Stop (MSTP14): Specifies the DTC module stop mode.
Bit 14
MSTP14
0
1
Description
DTC module stop mode cleared
DTC module stop mode set
(Initial value)
7.3 Operation
7.3.1 Overview
When activated, the DTC reads register information that is already stored in memory and transfers
data on the basis of that register information. After the data transfer, it writes updated register
information back to memory. Pre-storage of register information in memory makes it possible to
transfer data over any required number of channels. Setting the CHNE bit to 1 makes it possible to
perform a number of transfers with a single activation. A setting can also be made to have chain
transfer performed only when the transfer counter value is 0. This enables DTC re-setting to be
performed by the DTC itself.
Figure 7.2 shows a flowchart of DTC operation, and table 7.2 summarizes the chain transfer
conditions (combinations for performing the second and third transfers are omitted).
Rev.7.00 Feb. 14, 2007 page 193 of 1108
REJ09B0089-0700