M30220 Datasheet, PDF (59/212 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Unddeevrelopment
Preliminary Specifications REV.E
Specifications in this manual are tentative
DMAC
and
subject
to
change.
SINGLE-CHIP
16-BIT
Mitsubishi microcomputers
M30220 Group
CMOS MICROCOMPUTER
DMAi source pointer (i = 0, 1)
(b23)
b7
(b19)
b3
(b16)(b15)
b0 b7
(b8)
b0 b7
b0 Symbol
SAR0
SAR1
Address
002216 to 002016
003216 to 003016
When reset
Indeterminate
Indeterminate
Function
• Source pointer
Stores the source address
Transfer count
specification
0000016 to FFFFF16
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
RW
DMAi destination pointer (i = 0, 1)
(b23)
b7
(b19)
b3
(b16)(b15)
b0 b7
(b8)
b0 b7
b0 _Symbol
DAR0
DAR1
Address
002616 to 002416
003616 to 003416
When reset
Indeterminate
Indeterminate
Function
Transfer count
specification
RW
• Destination pointer
Stores the destination address
0000016 to FFFFF16
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be “0”.
DMAi transfer counter (i = 0, 1)
(b15)
b7
(b8)
b0 b7
b0
Symbol
Address
When reset
TCR0
002916, 002816 Indeterminate
TCR1
003916, 003816
Indeterminate
Function
• Transfer counter
Set a value one less than the transfer count
Transfer count
specification
RW
000016 to FFFF16
Figure 1.12.4. DMAC register (3)
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