
ML62Q1000 Series User's Manual
Chapter 6
Clock Generation Circuit
FEUL62Q1000
6-5
6.2.2 High-Speed Clock Mode Register (FHCKMOD)
FHCKMOD is a specific function register (SFR) to choose the oscillation mode of the high-speed clock oscillation
circuit (PLL oscillation circuit) and the frequency of high-speed clock.
Address:
0xF002(FHCKMODL/FHCKMOD), 0xF003(FHCKMODH)
Access:
R/W
Access size: 8/16bit
Initial value: 0x4400
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Word
FHCKMOD
Byte
FHCKMODH
FHCKMODL
Bit
-
OUT
C2
OUT
C1
OUT
C0
-
SYSC
2
SYSC
1
SYSC
0
-
-
-
-
-
-
-
HOS
CM0
R/W
R
R/W
R/W
R/W
R
R/W
R/W
R/W
R
R
R
R
R
R
R
R/W
Initial
value
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
Bit No.
Bit symbol
name
Description
15
-
Reserved bit
14 to
12
OUTC2 to
OUTC0
These bits are used to choose a division ratio of the frequency of the high-speed output
clock (OUTHSCLK) output from the general port. At the system reset, 1/16 HSCLK is
chosen.
000:
Do not use(HSCLK)
001:
1/2 HSCLK
010:
1/4 HSCLK
011:
1/8 HSCLK
100:
1/16 HSCLK (Initial value)
101:
1/32 HSCLK
110:
Do not use (1/32 HSCLK)
111:
Do not use (1/32 HSCLK)
11
-
Reserved bit
10 to 8
SYSC2 to
SYSC0
These bits are used to choose a division ratio of the frequency of the high-speed of the
high-speed clock used for the system clock (SYSTEMCLK). At the system reset, 1/16
HSCLK is chosen.
Choose a proper division ratio of the frequency, so that the frequency does not exceed the
maximum frequency of the CPU operating frequency shown in the Table 6-2 "CPU
operation mode and PLL oscillation reference frequency".
000:
HSCLK (in Wait mode)
1/2 HSCLK *
1
(in No wait mode)
001:
1/2 HSCLK (in Wait mode)
1/2 HSCLK *
1
(in No wait mode)
010:
1/4 HSCLK
011:
1/8 HSCLK
100:
1/16 HSCLK (Initial value)
101:
1/32 HSCLK
110:
Do not use (1/32 HSCLK)
111:
Do not use (1/32 HSCLK)
*
1
: When the PLL reference frequency is 24MHz, do not use the 1/2 HSCLK.
7 to 1
-
Reserved bit
0
HOSCM0
This bit is
used to choose
the oscillation mode of the high-speed oscillation circuit (PLL
oscillation mode)
0:
PLL oscillation mode (Initial value)
1:
Do not use (PLL oscillation mode)
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...