Table 25-1. Clock descriptions (continued)
Clock name
Related clock selector
Related clock divider
Description
FIRCDIV1_CLK
—
SCG_FIRCDIV[FIRCDIV1]
(÷ 1, 2, 4, 8, 16, 32, 64, or
output disabled)
Divided FIRC_CLK
This should be configured to 48 MHz
or less in RUN/HSRUN mode.
FIRCDIV2_CLK
—
SCG_FIRCDIV[FIRCDIV2]
(÷ 1, 2, 4, 8, 16, 32, 64, or
output disabled)
Divided FIRC_CLK
This should be configured to 48 MHz
or less in RUN/HSRUN mode.
SIRCDIV1_CLK
—
SCG_SIRCDIV[SIRCDIV1]
(÷ 1, 2, 4, 8, 16, 32, 64, or
output disabled)
Divided SIRC_CLK
This should be configured to 8 MHz or
less in RUN/HSRUN mode and to 4
MHz or less in VLPR/VLPS mode.
SIRCDIV2_CLK
—
SCG_SIRCDIV[SIRCDIV2](÷
1, 2, 4, 8, 16, 32, 64, or
output disabled
)
Divided SIRC_CLK
This should be configured to 8 MHz or
less in RUN/HSRUN mode and to 4
MHz or less in VLPR mode/VLPS
mode.
SOSCDIV1_CLK
—
SCG_SPLLDIV[SOSCDIV1]
(÷ 1, 2, 4, 8, 16, 32, 64, or
output disabled)
Divided SOSC_CLK
This should be configured to 40 MHz
or less in RUN/HSRUN mode.
SOSCDIV2_CLK
—
SCG_SPLLDIV[SOSCDIV2]
(÷ 1, 2, 4, 8, 16, 32, 64, or
output disabled)
Divided SOSC_CLK
This should be configured to 40 MHz
or less in RUN/HSRUN mode.
1. Only available in MWCT1016S
2. SYS_CLK/CORE_CLK must not be configured to less than BUS_CLK.
3. For FLASH_CLK operating range during parallel boot see
NOTE
Configuring DIVSLOW_CLK to lower frequencies than
supported flash frequencies mentioned in datasheet (fFLASH)
adds wait states and no power saving. It is recommended to
configure DIVSLOW_CLK as close to fFLASH.
25.4 Internal clocking requirements
The clock dividers are programmed via the SCG module’s clock divider registers. The
following requirements must be met when configuring the clocks for this chip:
• CORE_CLK and SYS_CLK clock frequency must be 112 MHz or less in HSRUN
mode and 80 MHz in normal RUN mode (but not configured to be less than
BUS_CLK).
• BUS_CLK frequency must be programmed to 56 MHz or less in HSRUN, 48 MHz
or less in RUN(when using PLL as system clock source maximum bus clock
Internal clocking requirements
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NXP Semiconductors
Содержание MWCT101 S Series
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