R0K561622S000BE Renesas Electronics America, R0K561622S000BE Datasheet - Page 339

• Manufacturer Part Number: R0K561622S000BE
• Description: KIT STARTER FOR H8SX/1622
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K561622S000BE

• Contents: Board, Cables, CD, Debugger, Power Supply
• Silicon Manufacturer: Renesas
• Features: Coding And Debugging, E10A Emulator, RS232 Serial Connection
• Kit Contents: Board
• Silicon Family Name: H8SX/1622F
• Silicon Core Number: R5F61622N50LGV
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: H8SX/1622
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

(5)
Although the DTE bit in DMDR enables or disables data transfer by the CPU write access, it is
automatically cleared to 0 according to the DMA transfer state by the DMAC.
The conditions for clearing the DTE bit by the DMAC are as follows:
• When the total size of transfers is completed
• When a transfer is completed by a transfer size error interrupt
• When a transfer is completed by a repeat size end interrupt
• When a transfer is completed by an extended repeat area overflow interrupt
• When a transfer is stopped by an NMI interrupt
• When a transfer is stopped by and address error
• Reset state
• Hardware standby mode
• When a transfer is stopped by writing 0 to the DTE bit
Writing to the registers for the channels when the corresponding DTE bit is set to 1 is prohibited
(except for the DTE bit). When changing the register settings after writing 0 to the DTE bit,
confirm that the DTE bit has been cleared to 0.
Figure 9.21 show the procedure for changing the register settings for the channel being
transferred.
Figure 9.21 Procedure for Changing Register Setting For Channel being Transferred
DTE Bit in DMDR
of channel during operation
Changing register settings
Change register settings
Write 0 to DTE bit
End of changing
register settings
Read DTE bit
DTE = 0?
Yes
No
[1]
[2]
[3]
[4]
[1] Write 0 to the DTE bit in DMDR.
[2] Read the DTE bit.
[3] Confirm that DTE = 0. DTE = 1
[4] Write the desired values to the
indicates that DMA is transferring.
registers.
Rev. 2.00 Sep. 16, 2009 Page 309 of 1036
Section 9 DMA Controller (DMAC)
REJ09B0414-0200