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MB90480 Datasheet(PDF) 80 Page - Fujitsu Component Limited.

Part No. MB90480
Description  16-bit Proprietary Microcontroller
Download  120 Pages
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Maker  FUJITSU [Fujitsu Component Limited.]
Homepage  http://edevice.fujitsu.com/fmd/en/index.html
Logo FUJITSU - Fujitsu Component Limited.

MB90480 Datasheet(HTML) 80 Page - Fujitsu Component Limited.

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MB90480/485 Series
80
22.
µDMAC
The
µDMAC is a simplified DMA module with functions equivalent to EI2OS. The µDMAC has 16 DMA data
transfer channels, and provides the following functions.
• Automatic data transfer between peripheral resources (I/O) and memory.
• CPU program execution stops during DMA operation.
• Incremental addressing for transfer source and destination can be turned on/off.
• DMA transfer control from the
µDMAC enable register, µDMAC stop status register, µDMAC status register,
and descriptor.
• Stop requests from resources can stop DMA transfer.
• When DMA transfer is completed, the
µDMAC status register sets a flag in the bit for the corresponding channel
on which transfer was completed, and outputs a completion interrupt to the interrupt controller.
(1) Register List
µDMAC enable register
Initial value
DERH : 0000ADH
00000000B
µDMAC enable register
Initial value
DERL : 0000ACH
00000000B
µDMAC stop status register
Initial value
DSSR : 0000A4H
00000000B
µDMAC status register
Initial value
DSRH : 00009DH
00000000B
µDMAC status register
Initial value
DSRL : 00009CH
00000000B
R/W
R/W
15
14
13
12
11
10
9
8
EN14
EN15
EN13
EN12
EN11
EN10
EN9
EN8
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
76
5
4
3
2
1
0
EN6
EN7
EN5
EN4
EN3
EN2
EN1
EN0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
76
5
4
3
2
1
0
STP6
STP7
STP5
STP4
STP3
STP2
STP1
STP0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
15
14
13
12
11
10
9
8
DE14
DE15
DE13
DE12
DE11
DE10
DE9
DE8
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
76
5
4
3
2
1
0
DE6
DE7
DE5
DE4
DE3
DE2
DE1
DE0
R/W
R/W
R/W
R/W
R/W
R/W


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