HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 253

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

The DMAC internal status, due to the above operation after completion of the fourth transfer, is
indicated in table 10.9 for both address reload on and off.
Table 10.9 DMAC Internal Status
Notes: 1. Interrupts are executed until the DMATCR value becomes 0, and if the IE bit of the
To execute transfers after the fifth one when the address reload is on, make the transfer request
source issue another transfer request signal.
Item
SAR
DAR
DMATCR
Bus mastership
DMAC operation
Interrupts
Transfer request source flag clear Executed
2. If transfer request source flag clears are executed until the DMATCR value becomes 0,
3. Designate burst mode when using the address reload function. There are cases where
4. Designate a multiple of four for the DMATCR value when using the address reload
CHCR is set to 1, are issued regardless of whether the address reload is on or off.
they are executed regardless of whether the address reload is on or off.
abnormal operation will result if it is executed in cycle steal mode.
function. There are cases where abnormal operation will result if anything else is
designated.
Address Reload On
H'FFFF8428
H'FFFFF004
H'0000007C
Released
Halted
Not issued
10. Direct Memory Access Controller (DMAC)
Rev.4.00 Mar. 27, 2008 Page 209 of 882
H'FFFF842C
H'FFFFF004
H'0000007C
Maintained
Not issued
Address Reload Off
Processing continues
Not executed
REJ09B0108-0400