YR0K42378FC000BA Renesas Electronics America, YR0K42378FC000BA Datasheet - Page 397

• Manufacturer Part Number: YR0K42378FC000BA
• Description: KIT EVAL FOR H8S/2378
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of YR0K42378FC000BA

• Contents: Board
• For Use With/related Products: H8S/2378
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ETCRB is decremented by 1 after every block transfer, and when the count reaches H'0000 the
DTE bit in DMABCRL is cleared and transfer ends. If the DTIE bit in DMABCRL is set to 1 at
this point, an interrupt request is sent to the CPU or DTC.
Figure 7.15 shows the operation flow in block transfer mode.
Figure 7.15 Operation Flow in Block Transfer Mode
MARB = MARB – DAIDE·(–1)
MARA = MARA – SAIDE·(–1)
MARB = MARB + DAIDE·(–1)
MARA = MARA + SAIDE·(–1)
Write to address specified by MARB
No
Read address specified by MARA
ETCRAL = ETCRAL – 1
ETCRB = ETCRB – 1
ETCRAL = ETCRAH
(DTE = DTME = 1)
Clear DTE bit to 0
Transfer request?
ETCRB = H'0000
ETCRAL = H'00
to end transfer
Release bus
Acquire bus
BLKDIR = 0
Start
Yes
Yes
Yes
Yes
SAID
DAID
Rev.7.00 Mar. 18, 2009 page 329 of 1136
·2
·2
DAID
SAID
DTSZ
DTSZ
·2
·2
·ETCRAH
·ETCRAH
DTSZ
DTSZ
Section 7 DMA Controller (DMAC)
No
No
No
REJ09B0109-0700