YLCDRSK2378 Renesas Electronics America, YLCDRSK2378 Datasheet - Page 399
YLCDRSK2378
Manufacturer Part Number
YLCDRSK2378
Description
KIT DEV EVAL H8S/2378 LCD
Manufacturer
Renesas Electronics America
Series
H8®r
Datasheet
1.YR0K42378FC000BA.pdf
(1208 pages)
Specifications of YLCDRSK2378
Main Purpose
Displays, LCD Controller
Embedded
Yes, MCU, 16-Bit
Utilized Ic / Part
YLCDRSK2378
Primary Attributes
5.7" QVGA, Touch Screen
Secondary Attributes
Source Code on CD, Debugging Requires Emulator Cable E10A USB/JTAG
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 399 of 1208
- Download datasheet (8Mb)
Section 7 DMA Controller (DMAC)
7.5.8
Basic Bus Cycles
An example of the basic DMAC bus cycle timing is shown in figure 7.17. In this example, word-
size transfer is performed from 16-bit, 2-state access space to 8-bit, 3-state access space. When
the bus is transferred from the CPU to the DMAC, a source address read and destination address
write are performed. The bus is not released in response to another bus request, etc., between
these read and write operations. As like CPU cycles, DMA cycles conform to the bus controller
settings.
The address is not output to the external address bus in an access to on-chip memory or an internal
I/O register.
CPU cycle
DMAC cycle (1-word transfer)
CPU cycle
T
T
T
T
T
T
T
T
1
2
1
2
3
1
2
3
φ
Source
Destination address
address
Address bus
RD
HWR
LWR
Figure 7.17 Example of DMA Transfer Bus Timing
Rev.7.00 Mar. 18, 2009 page 331 of 1136
REJ09B0109-0700
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