
235
Chapter 6
Clock Generator
User’s Manual U16702EE3V2UD00
6.3 Control
Registers
(1)
Main peripheral clock control register (MPCCTL)
This is an 8-bit register that selects the internal clock. This register can be read or written in 8-bit
or 1-bit units.
Data can be written to this register only in combination of specific sequences (refer to
3.2.3
”Special registers” on page 70
). The clock generator flexibility allows to use either simultane-
ously both PLL or to use only one PLL. Both PLLs can be assigned respectively to the CPU or to
the peripherals.
Figure 6-2:
Main Peripheral Clock Control Register (MPCCTL) Format (1/2)
Caution:
When using an 8-bit manipulation instruction, do not change the SELPLL bit with
other bit.
Caution:
When using PLL clock for CPU, do not change the MCKSEL bit value.
Caution:
When EXCKSEL register value is 01h to 3Fh, do not change PCKSEL bit value.
f
PLL_PCKSEL
clock is provided only to aFCANn, CSI3n and CSIBn (n = 0,1).
Cautions: 1. If this bit is set to “1”, it is impossible to set to “0” by register writing. Only
RESET input can be set to “0”.
2. When using PLL1 clock for peripheral functions, do not set to 1 this bit.
Symbol
7
6
5
4
3
2
1
0
Address
After reset
MPCCTL SELPLL
0
0
0
MCKSEL PCKSEL STPPLL1 STPPLL0 FFFFF82BH
80H
R/W
R/W
R
R
R
R/W
R/W
R/W
R/W
SELPLL
f
XX
clock select
0
Main-OSC clock (f
XX
= f
X
)
1
PLL clock (f
XX
= f
PLL_MCKSEL_CKDIV
)
MCKSEL
Master clock selection register (f
PLL_MCKSEL
)
0
Main clock (f
PLL_MCKSEL)
= PLL0 (Default)
1
Main clock (f
PLL_MCKSEL)
= PLL1
PCKSEL
Peripheral clock selection register (f
PLL_PCKSEL
)
0
Peripheral clock = PLL0 (Default)
1
Peripheral clock = PLL1
STPPLL1
PLL 1 execution stop register
0
PLL1 executable (Default)
1
PLL1 stop
electronic components distributor
Содержание V850E/RS1
Страница 6: ...6 User s Manual U16702EE3V2UD00 Downloaded from Elcodis com electronic components distributor...
Страница 206: ...206 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 232: ...232 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 366: ...366 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 402: ...402 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 684: ...684 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 766: ...766 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 798: ...798 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 832: ...832 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 834: ...834 User s Manual U16702EE3V2UD00 MEMO Downloaded from Elcodis com electronic components distributor...
Страница 848: ...848 User s Manual U16702EE3V2UD00 Downloaded from Elcodis com electronic components distributor...
Страница 852: ...Downloaded from Elcodis com electronic components distributor...