upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 507

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

(2)
Refer to (7)”DMA channel control register (DMCHCn)” on page 513 for the explanation of the ACF
bits.
(3)
Caution:
DMSAnH SC2 SC1 SC0
DMSAnL SA15 SA14 SA13 SA12 SA11 SA10 SA9 SA8 SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0
DMSF
R/W
R/W
R/W
DMA channel status flag register (DMSF)
The DMSF register shows the DMA transfer status of each DMA channel. It is a direct mirror of all
ACF bits (DMCHCn register). It can be read in 16-bit units only.
The register is initialized by POWER = 0. Initial value is 0000H by reset.
DMA source address register (DMSAn)
The DMSAn register is used to set the DMA source address. When the TDIR bit (DMADCn regis-
ter) is 0, it holds the address the data is transferred from (source), for TDIR=1 the register holds
the address data is transferred to (destination). The register can be read or written in 32-bit or 16-
bit units.
R/W R/W R/W
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
15
15
15
R
0
Write to DMSAn is permitted only when EN = 0 (DMCHCn register).
14
14
14
0
R
Figure 15-5: DMA Source Address Register (DMSAn) Format (1/2)
Figure 15-4: DMA Channel Status Flag Register (DMSF) Format
DMSA0H=FFFFFE0AH, DMSA1H=FFFFFE16H, DMSA2H=FFFFFE22H,
DMSA3H=FFFFFE2EH, DMSA4H=FFFFFE3AH, DMSA5H=FFFFFE46H
13
13
13
DMSA0L=FFFFFE08H, DMSA1L=FFFFFE14H, DMSA2L=FFFFFE20H,
R
DMSA3L=FFFFFE2CH, DMSA4L=FFFFFE38H, DMSA5L=FFFFFE44H
0
12
12
12
R
R
0
0
Chapter 15 DMA Functions (DMA Controller)
11
11
11
R
R
0
0
User’s Manual U16702EE3V2UD00
10
10
10
R
R
0
0
SA25 SA24 SA23 SA22 SA21 SA20 SA19 SA18 SA17 SA16
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
R
9
0
9
9
R
8
0
8
8
R
7
0
7
7
R
6
0
6
6
(ch5)
ACF
R
5
5
5
(ch4)
ACF
R
4
4
4
(ch3)
ACF
R
3
3
3
(ch2)
ACF
R
2
2
2
(ch1)
ACF
R
1
1
1
(ch0)
ACF
R
0
0
0
FFFFFE04H
Address
Address
Address
0000H
undef.
undef.
After
reset
After
reset
After
reset
507