SH7203 Datasheet, PDF (426/1686 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 10 Direct Memory Access Controller (DMAC)
Bit
Bit Name
29
RLDSAR
28
RLDDAR
27 to 24 ⎯
23
DO
Initial
Value
0
0
All 0
0
R/W Description
R/W SAR Reload Function ON/OFF
Enables (ON) or disables (OFF) the function to reload
SAR and DMATCR.
0: Disables (OFF) the function to reload SAR and
DMATCR
1: Enables (ON) the function to reload SAR and
DMATCR
R/W DAR Reload Function ON/OFF
Enables (ON) or disables (OFF) the function to reload
DAR and DMATCR.
0: Disables (OFF) the function to reload DAR and
DMATCR
1: Enables (ON) the function to reload DAR and
DMATCR
R
Reserved
These bits are always read as 0. The write value
should always be 0.
R/W DMA Overrun
Selects whether DREQ is detected by overrun 0 or by
overrun 1. This bit is valid only in level detection by
CHCR_0 to CHCR_3. This bit is reserved in CHCR_4
to CHCR_7; it is always read as 0 and the write value
should always be 0.
0: Detects DREQ by overrun 0
1: Detects DREQ by overrun 1
Rev. 2.00 Apr. 16, 2008 Page 396 of 1652
REJ09B0313-0200