HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 334

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Table 9.7
Notes: 1. An interrupt is generated regardless of whether the address reload function is on or off,
9.6.2
In this example, DMA transfer is performed between the external memory specified with the
indirect address (transfer source) and the SCIF transmitter (transfer destination) using DMAC
channel 3. Table 9.8 shows the transfer conditions and register settings. In addition, the trigger of
the number of transmit FIFO data is set to 1 (TTRG1 = TTRG0 = 1 in SCFCR).
Rev. 4.00, 03/04, page 288 of 660
Items
SAR_2
DAR_2
DMATCR_2
Bus right
DMAC operation
Interrupt
Transfer request source flag
clear
2. The transfer request source flag is cleared regardless of whether the address reload
3. Specify the burst mode to use the address reload function. This function may not be
4. Set the value multiple of four in DMATCR_2 to use the address reload function. This
Example of DMA Transfer between External Memory and SCIF Transmitter
(Indirect Address on)
if transfers are executed until the value in DMATCR_2 reaches 0 and the IE bit in
CHCR_2 has been set to 1.
function is on or off, if transfers are executed until the value in DMATCR_2 reaches 0.
correctly executed in the cycle steal mode.
function may not be correctly executed if other values are specified.
Values in the DMAC after the Fourth Transfer Ends
Address reload on
H'04000080
H'003FFFFC
H'0000007C
Released
Stops
Not generated
Executed
Address reload off
H'04000090
H'003FFFFC
H'0000007C
Held
Keeps operating
Not generated
Not executed