MB86831 FUJITSU [Fujitsu Component Limited.], MB86831 Datasheet - Page 74

• Manufacturer Part Number: MB86831
• Description: 32-bit Embedded Controller
• Manufacturer: FUJITSU [Fujitsu Component Limited.]

74
MB86830 Series
Internal Clock Control/Status Register (ICCS)
bit 31 to bit 7
bit 6 to bit 4
bit 3
bit 2 to bit 0
20. General-purpose 16-bit Timer (MB86836)
bit 31 to bit 16
bit 15
bit 14
bit 13 to bit 11
bit 10 to bit 8
bit 7 to bit 0
(1) Prescaler0 (PRS0)
bit
bit
• Register explanation
31
31
:Reserved [“0”Write, Don’t care for read]
:CLKST (Internal Clock Status)(An initial value is a set point of external terminal CLKSEL2,
:CE (Internal Clock Change Enable)(Initial value “0”)
:CLKSEL (Internal Clock Select)
CLKSEL1, and CLKSEL0. )
Can know the multiplication rate that CPU works by the bit which shows Internal Clock.
It is necessary to set “1” in this bit to change Internal Clock before sleep mode (low power con-
Internal Clock specification bit.
Internal Clock change inable bit.Internal Clock is changed according to the CLKSEL bit according
to this value at sleep mode (low power consumption mode).
sumption mode) is set.
:Reserved [“0”Write, Don’t care for read]
:External Clock [“0”Write]
:Test [“0”Write]
:Reserved [“0”Write, Don’t care for read]
:Select (RST = 000)
:Prescale Value (RST = 01)
Support to only internal clock mode
1: Internal Clock is changed by the CLKSEL bit.
0: No change Internal Clock.
Reserved
CLKST
100
101
110
111
011
010
001
000
Reserved
16
EX
15
Test
14
Internal Clock
Reserved
13
Reserved
1
2
3
4
5
11 10
CS3#
Select
7
L, Address<9:2>
8
6
CLKST
7
Prescale Value
4
CE
3
2
CLKSEL
0x0c
0
0