E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 254
E62655RUSB
Manufacturer Part Number
E62655RUSB
Description
EMULATOR BASE H8S/2655R W/USB
Manufacturer
Renesas Electronics America
Type
Microcontrollerr
Datasheet
1.E62655RUSB.pdf
(1093 pages)
Specifications of E62655RUSB
Contents
E6000 Emulator Unit and 4 Logic Probes
For Use With/related Products
H8S/2655R
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 254 of 1093
- Download datasheet (6Mb)
Section 7 DMA Controller
7.2.1
MAR is a 32-bit readable/writable register that specifies the transfer source address or destination
address.
The upper 8 bits of MAR are reserved: they are always read as 0, and cannot be modified.
Whether MAR functions as the source address register or as the destination address register can be
selected by means of the DTDIR bit in DMACR.
MAR is incremented or decremented each time a byte or word transfer is executed, so that the
address specified by MAR is constantly updated. For details, see section 7.2.4, DMA Control
Register (DMACR).
MAR is not initialized by a reset or in standby mode.
Rev. 5.00 Sep 14, 2006 page 224 of 1060
REJ09B0331-0500
Bit
MAR
Initial value
R/W
Bit
MAR
Initial value
R/W
Legend: *: Undefined
Memory Address Registers (MAR)
:
:
:
:
:
:
:
:
R/W
31
15
—
—
0
*
R/W
30
14
—
—
0
*
R/W
29
13
—
—
0
*
R/W
28
12
—
—
0
*
R/W
27
11
—
—
0
*
R/W
26
10
—
—
0
*
R/W
25
—
—
0
9
*
R/W
24
—
—
0
8
*
R/W
R/W
23
*
7
*
R/W
R/W
22
6
*
*
R/W
R/W
21
*
5
*
R/W
R/W
20
4
*
*
R/W
R/W
19
*
3
*
R/W
R/W
18
2
*
*
R/W
R/W
17
1
*
*
R/W
R/W
16
*
0
*
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