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R01UH0336EJ0102 Rev.1.02
Page 133 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 3 CPU System Function
3.6.2
CPU-Related Registers in Detail
(1)
PEID - Processor Element Identifier Register
The PEID register returns the processor-element identifier of the last
accessing CPU.
Access
Readable in 16 bit-units
Address
FFFF 6490
H
Initial value
0001
H
Table 3-6
PEID Register
(2)
DCLKWAIT - Data Flash Access Wait Setting Register
This register is used to set a waiting time for access to data-flash memory.
Access
Readable/writable in 8-bit units.
Address
FF43 6000H
Initial value
Initialized to the value 1F
H
by a reset from any source.
Table 3-7
DCLKWAIT Register
Caution
After release from the reset state, set the waiting time for access by the time of
the first access to data-flash memory.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
PEID[15:0]
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit Position
Bit Name
Function
15 to 0
PEID[15:0]
These bits indicate a processor element ID and are always read as 0001
H
.
7
6
5
4
3
2
1
0
0
0
0
WAIT[4:0]
R
R
R
R/W
R/W
R/W
R/W
R/W
Bit Position
Bit Name
Function
4 to 0
WAIT[4:0]
These bits are used to set a waiting time for access to data-flash memory.
Specify the setting that corresponds to the operating frequency of the CPU.
Setting Value
Description
11
H
Setting when the CPU is operating at 48 MHz to
80 MHz
1F
H
(Initial value)
Other than the above
Settings are prohibited.
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