Digi Connect ME Hardware Reference

Power Management (Digi Connect ME 9210 only)
51
Power Management (Digi Connect ME 9210 only)
Using the Digi NET+OS development environment, applications on the Digi Connect ME 9210
are capable of operating the module in several reduced power consumption modes. These reduced
power operating modes utilize the power management mechanisms for the NS9210 processor for
CPU clock scaling and sleep.
In the Clock Scaling mode, the system itself continues to execute instructions, but at a different
clock rate, which can be changed on-the-fly, using Digi’s patented circuitry inside the NS9210
processor. The clock speed is changed programmatically to lower or raise the system clock speed,
thus reducing or increasing the module’s power footprint, respectively.
Additionally, a Sleep mode is available in which the system stops executing instructions. Based on
the application needs, wake-up triggers can be set up programmatically to activate the processor
back to wherever it left off. In this mode, a drastic power reduction is realized by reducing the power
consumption of the NS9210 processor and the on-module PHY.
For sample power consumption figures for normal (typical) and power management related
operation of the Digi Connect ME 9210, see below:
 3.3VDC @ 346 mA typical (1.14W)
 UART and Ethernet activated
Low Speed Idle Mode (approximate)
 3.3VDC @ 186 mA (613 mW)
 /16 clock scaling, Ethernet activated
Sleep Mode (approximate)
 3.3VDC @ 34 mA (113 mW)
 Wake-up on EIRQ, Ethernet PHY off
Measure Temperature Here

Digi Connect ME Specifications

General

Brand	Digi
Model	Connect ME
Category	Network Hardware
Language	English