R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 454

• Manufacturer Part Number: R0K572030S000BE
• Description: KIT DEV FOR SH7203
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572030S000BE

• Contents: CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
• Silicon Manufacturer: Renesas
• Kit Contents: Board
• Silicon Family Name: SH7203
• Silicon Core Number: R5S72030W200FP
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Mcu Supported Families: SH7203
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: SH7203
• Lead Free Status / Rohs Status: Compliant

Section 10 Direct Memory Access Controller (DMAC)
Figure 10.2 is a flowchart of this procedure.
Rev. 3.00 Sep. 28, 2009 Page 422 of 1650
REJ09B0313-0300
Notes: 1. In auto-request mode, transfer begins when the NMIF, AE, and TE bits are cleared to 0 and the
(SAR, DAR, DMATCR, CHCR, DMAOR, DMARS)
2. DREQ level detection in burst mode (external request) or cycle steal mode.
3. DREQ edge detection in burst mode (external request), or auto request mode in burst mode.
When reload function is enabled,
the transfer acknowledge signal
RSAR → SAR, RDAR → DAR,
DMATCR – 1 → DMATCR,
and RDMATCR → DMATCR
Transfer (one transfer unit);
DE and DME bits are set to 1.
on-chip peripheral module,
SAR and DAR updated
For a request from an
is sent to the module.
DEI interrupt request
or AE = 1 or DE = 0
Initial settings
NMIF, AE, TE = 0?
DE, DME = 1 and
Transfer request
DMATCR = 0?
Transfer end
(when IE = 1)
or DME = 0?
Yes
occurs?*
Yes
Yes
NMIF = 1
Yes
TE = 1
Start
1
Figure 10.2 DMA Transfer Flowchart
request mode, or in on-chip peripheral
detection by level in external
module request mode,
No
No
No
No
TEMASK = 1?
Normal end
In DREQ
No
for a request from an on-chip peripheral
When the TC bit in CHCR is 0, or
module, the transfer acknowledge
signal is sent to the module.
Yes
Transfer terminated
HEI interrupt request
Yes
or AE = 1 or DE = 0
DMATCR = 1/2 ?
(when HE = 1)
or DME = 0?
Yes
NMIF = 1
HE = 1
*
3
DREQ detection system
transfer request mode,
No
No
Bus mode,
*
2