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M306V5ME-XXXSP Datasheet, PDF (259/263 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER | |||
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MITSUBISHI MICROCOMPUTERS
M306V5ME-XXXSP
M306V5EESP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Structure of Register
Refer to the figure below as for each register.
<Example>
Processor mode register 1 (Note)
b7 b6 b5 b4 b3 b2 b1 b0
00 00
10
Symbol
PM1
Values immediately (Note 1)
after reset release
Address
000516
When reset
00000X002
(Note 2)
Bit attributes
Bit symbol
Bit name
Function
RW
Reserved bit
Must always be set to â0â
Reserved bit
Must always be set to â1â
Nothing is assigned.
In an attempt to write to this bit, write â0.â The value, if read, turns out to be
indeterminate.
Reserved bits
Must always be set to â0â
PM17
Wait bit
0 : No wait state
1 : Wait state inserted
Note: As bit 1 of this register becomes â0â at reset, must always be set to â1â after reset
release. Set bit 1 of the protect register (address 000A16) to â1â when writing new
values to this register.
: Bit in which nothing is assigned
Notes 1: Values immediately after reset release
0 â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â0â after reset release
1 â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â1â after reset release
? â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢Indeterminate after reset release
ââ¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢â¢Bit in which nothing is assigned
2: Bit attributesâ¢â¢â¢â¢â¢â¢The attributes of control register bits are classified into 3 types : read-only,
write-only and read and write. In the figure, these attributes are represented
as follows :
Râ¢â¢â¢â¢â¢â¢Read
â¢â¢â¢â¢â¢â¢Read enabled
ââ¢â¢â¢â¢â¢â¢Read disabled
â¢â¢â¢â¢â¢â¢Bit in which nothing is assigned (The read value is indeterminate unless otherwise mentioned.)
Wâ¢â¢â¢â¢â¢â¢Write
â¢â¢â¢â¢â¢â¢Write enabled
ââ¢â¢â¢â¢â¢â¢Write disabled
â¢â¢â¢â¢â¢â¢Bit in which nothing is assigned
Rev. 1.0
258
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