J-Link / J-Trace User Guide (UM08001) - Microcontrollers
J-Link / J-Trace User Guide (UM08001) - Microcontrollers
J-Link / J-Trace User Guide (UM08001) - Microcontrollers
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130 CHAPTER 5 Working with J-<strong>Link</strong> and J-<strong>Trace</strong><br />
5.11.1.16 SetSysPowerDownOnIdle<br />
When using this command, the target CPU is powered-down when no transmission<br />
between J-<strong>Link</strong> and the target CPU was performed for a specific time. When the next<br />
command is given, the CPU is powered-up.<br />
Note: This command works only for Cortex-M3 devices.<br />
Typical applications<br />
This feature is useful to reduce the power consumption of the CPU.<br />
Syntax<br />
SetSysPowerDownOnIdle = <br />
Note: A 0 for disables the power-down on idle functionality.<br />
Example<br />
SetSysPowerDownOnIdle = 10; // The target CPU is powered-down when there is no<br />
// transmission between J-<strong>Link</strong> and target CPU for at least<br />
10ms<br />
5.11.1.17 SupplyPower<br />
This command activates power supply over pin 19 of the JTAG connector. The KS<br />
(Kickstart) versions of J-<strong>Link</strong> have the V5 supply over pin 19 activated by default.<br />
Typical applications<br />
This feature is useful for some eval boards that can be powered over the JTAG connector.<br />
Syntax<br />
SupplyPower = 0 | 1<br />
Example<br />
SupplyPower = 1<br />
5.11.1.18 SupplyPowerDefault<br />
This command activates power supply over pin 19 of the JTAG connector permanently.<br />
The KS (Kickstart) versions of J-<strong>Link</strong> have the V5 supply over pin 19 activated<br />
by default.<br />
Typical applications<br />
This feature is useful for some eval boards that can be powered over the JTAG connector.<br />
Syntax<br />
SupplyPowerDefault = 0 | 1<br />
Example<br />
SupplyPowerDefault = 1<br />
J-<strong>Link</strong> / J-<strong>Trace</strong> (<strong>UM08001</strong>) © 2004-2010 SEGGER Microcontroller GmbH & Co. KG