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Document Number: 002-xxxxx Rev. ** 

Page 24 of 42

The Power Management Unit (PMU) provides power management features that can be invoked by software through power 
management registers or packet-handling in the baseband core.

The BBC generates power-down control signals for the transmit path, receive path, PLL, and power amplifier to the 2.4 GHz trans-
ceiver, which then processes the power-down functions accordingly.

Power is automatically managed by the firmware based on input device activity. As a power-saving task, the firmware controls the 
disabling of the on-chip regulator when in deep sleep mode.

There are several low-power operations for the BBC:

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Physical layer packet handling turns RF on and off dynamically within packet TX and RX.

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Bluetooth-specified low-power connection mode. While in these low-power connection modes, the CYBLE-0130XX-00 runs on the 

Low Power Oscillator and wakes up after a predefined time period.

The CYBLE-0130XX-00 automatically adjusts its power dissipation based on user activity. The following power modes are supported:

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Active mode

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Idle mode

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Sleep mode

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HIDOFF (Deep Sleep) mode

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Timed Deep Sleep mode

The CYBLE-0130XX-00 transitions to the next lower state after a programmable period of user inactivity. Busy mode is immediately 
entered when user activity resumes.

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In HIDOFF (Deep Sleep) mode, the CYBLE-0130XX-00 baseband and core are powered off by disabling power to LDOOUT. The 

VDDO domain remains powered up and will turn the remainder of the chip on when it detects user events. This mode minimizes 

chip power consumption and is intended for long periods of inactivity.