Power Rails (Original): Difference between revisions
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The [[Original Xbox 360]]'s [[motherboard]] has various rails which power components of the system. | The [[Original Xbox 360]]'s [[motherboard]] has various rails which power components of the system. | ||
This page applies to the [[Xenon (Motherboard)|Xenon]], [[Zephyr]], [[Falcon]], [[Elpis (Motherboard)|Elpis]], [[Jasper]], and [[Tonasket]] motherboards. | |||
== Standby Power == | |||
==== V_1P8STBY ==== | |||
* Voltage: 1.8V | |||
* Source: [[#V_5P0STBY|V_5P0STBY]] | |||
==== V_3P3STBY ==== | |||
* Voltage: 3.3V | |||
* Source: [[#V_5P0STBY|V_5P0STBY]] | |||
==== V_5P0STBY ==== | |||
* Voltage: 5V | |||
* Source: [[Power Supply]] | |||
== Main Power == | == Main Power == | ||
| Line 24: | Line 40: | ||
* Source: [[#V_12P0|V_12P0]] | * Source: [[#V_12P0|V_12P0]] | ||
* Multipurpose System Power | * Multipurpose System Power | ||
==== V_5P0DUAL ==== | |||
* Voltage: 5V | |||
* Source: [[#V_5P0|V_5P0]] or [[#V_5P0STBY|V_5P0STBY]], controlled by [[SMC]] | |||
* Purpose: USB Port Power | |||
==== V_CPUCORE ==== | ==== V_CPUCORE ==== | ||
| Line 52: | Line 73: | ||
==== V_GPUPCIE ==== | ==== V_GPUPCIE ==== | ||
* [[Xenon (Motherboard)|Xenon]] [[Zephyr]], [[Falcon]], and [[Elpis (Motherboard)|Elpis]] | * [[Xenon (Motherboard)|Xenon]], [[Zephyr]], [[Falcon]], and [[Elpis (Motherboard)|Elpis]] | ||
** Voltage: 1.25V | ** Voltage: 1.25V | ||
** Source: [[#V_3P3|V_3P3]] | ** Source: [[#V_3P3|V_3P3]] | ||
| Line 61: | Line 82: | ||
==== V_MEM ==== | ==== V_MEM ==== | ||
* Voltage: 1. | * [[Xenon (Motherboard)|Xenon]], [[Zephyr]], [[Falcon]], and [[Elpis (Motherboard)|Elpis]] | ||
** Voltage: 1.9-2.1V, controlled by strapping depending on [[RAM]] type | |||
* [[Jasper]] and [[Tonasket]] | |||
** Voltage: 1.8V | |||
* Source: [[#V_12P0|V_12P0]] | * Source: [[#V_12P0|V_12P0]] | ||
* Purpose: [[RAM]] Power | * Purpose: [[RAM]] Power | ||
==== V_MPORT ==== | |||
* Voltage: 3.3V | |||
* Source: [[#V_5P0|V_5P0]] | |||
* Purpose: [[Memory Unit]] Port Power | |||
==== V_SBPCIE ==== | ==== V_SBPCIE ==== | ||
Latest revision as of 20:39, 16 June 2023
The Original Xbox 360's motherboard has various rails which power components of the system.
This page applies to the Xenon, Zephyr, Falcon, Elpis, Jasper, and Tonasket motherboards.
Standby Power
V_1P8STBY
- Voltage: 1.8V
- Source: V_5P0STBY
V_3P3STBY
- Voltage: 3.3V
- Source: V_5P0STBY
V_5P0STBY
- Voltage: 5V
- Source: Power Supply
Main Power
V_12P0
- Voltage: 12V
- Source: Power Supply
- Multipurpose System Power
V_1P8
V_3P3
- Voltage: 3.3V
- Source: V_12P0
- Multipurpose System Power
V_5P0
- Voltage: 5V
- Source: V_12P0
- Multipurpose System Power
V_5P0DUAL
V_CPUCORE
V_CPUPLL
V_CPUVCS
- Voltage: 1.32-1.68V, controlled by CPU via APS (CPU VID * 1.2)
- Source: V_5P0
- Purpose: CPU VCS Power
- Not present on Xenon, Zephyr, and Elpis
V_EFUSE
V_GPUCORE
V_GPUPCIE
- Xenon, Zephyr, Falcon, and Elpis
- Voltage: 1.25V
- Source: V_3P3
- Jasper and Tonasket
- Purpose: GPU PCIe Power
V_MEM
- Xenon, Zephyr, Falcon, and Elpis
- Voltage: 1.9-2.1V, controlled by strapping depending on RAM type
- Jasper and Tonasket
- Voltage: 1.8V
- Source: V_12P0
- Purpose: RAM Power
V_MPORT
- Voltage: 3.3V
- Source: V_5P0
- Purpose: Memory Unit Port Power
V_SBPCIE
- Voltage: 1.87V
- Source: V_3P3
- Purpose: Southbridge PCIe Power