RT600 datasheet(71/171 Pages) NXP

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RT600

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Product data sheet

Rev. 2.2 — 25 January 2024

71 of 173

NXP Semiconductors

RT600

Dual-core microcontroller with 32-bit Cortex-M33 and Xtensa HiFi4

Audio DSP CPUs

10.14 Power control

The RT600 supports a variety of power control features. In Active mode, when the chip is

running, power and clocks to selected peripherals can be adjusted for power

consumption. In addition, there are individual power-down controls for many (particularly

analog) peripherals. Finally, any set of individual shared Ram partitions may be placed in

retain/standby mode or powered-off entirely. This selection can be made on a

partition-by-partition basis.

In addition, there are three special modes of processor power reduction with different

peripherals running: sleep mode, deep-sleep mode, and deep power-down mode that can

be activated using the power API library from the SDK software package

Only FBB must be used for active mode and only RBB must be used for deep sleep

mode.

10.14.1 Sleep mode

There are independent sleep modes for each of the two CPUs. In sleep mode, the system

clock to that CPU is stopped and execution of instructions is suspended until either a reset

or an interrupt occurs. Peripheral functions, if selected to be clocked can continue

operation during Sleep mode and may generate interrupts to cause the processor to

resume execution. Sleep mode eliminates dynamic power used by the processor itself,

memory systems and related controllers, internal buses, and unused peripherals. The

processor state and registers, peripheral registers, and internal SRAM values are

maintained, and the logic levels of the pins remain static.

10.14.2 Deep-sleep mode

In deep-sleep mode, the system clock to the processor is disabled as in sleep mode.

Analog blocks are powered down by default but can be selected to keep running through

the POWER_EnterDeepSleep API if needed as wake-up sources. The main clock and all

peripheral clocks are disabled. Primary clock sources are disabled by default.

Deep-sleep mode eliminates all power used by analog peripherals and all dynamic power

used by the processor itself, memory systems and related controllers, and internal buses

(other than those specifically designated to remain functional). The processor state and

registers, peripheral registers, and internal SRAM values are maintained, and the logic

levels of the pins remain static.

GPIO Pin Interrupts, and selected peripherals such as USB, DMIC, SPI, I2C, USART,

WWDT, RTC, and Micro-tick Timer can be left running in deep-sleep mode. Except for the

Main PLL, Audio PLL, and main clock, the following clock sources (CLKIN pin, crystal

oscillator, 1m_lposc, 16m_irc, 32k_clk, 32k_wake_clk, 48/60m_irc, RTC oscillator,

watchdog oscillator, and mclk_in) may be left running.

See related chapters for details of a specific interface. In some cases, DMA can operate in

deep-sleep mode.

10.14.3 Deep power-down mode and Full Deep power-down mode

In deep power-down mode, power is shut off to the entire chip except for the RTC power

domain, the RESET pin, and the PMIC_IRQ_N pin. The RT600 can wake up from deep

power-down mode via the RESET pin, the RTC alarm, and the PMIC_IRQ_N pin. The

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