Power Rails (S/E): Difference between revisions

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==== V_1P8 ====
==== V_1P8 ====
* Voltage: 1.8V
* Voltage: 1.8V
* Source: [[#V_5P0|V_5P0]] ([[Trinity]]), [[#V_3P3|V_3P3]] ([[Corona]] and newer)
* Source: [[#V_5P0|V_5P0]] ([[Trinity]]), Tied to [[#V_CPUPLL|V_CPUPLL]] ([[Corona]] and newer)
* Multipurpose System Power
* Multipurpose System Power


Line 44: Line 44:
* Voltage: 1.83V
* Voltage: 1.83V
* Source: [[#V_3P3|V_3P3]]
* Source: [[#V_3P3|V_3P3]]
* Purpose: [[CPU]] PLL Power
* Purpose: [[CGPU]] PLL Power


==== V_CPUVCS ====
==== V_CPUVCS ====
* Voltage: 1.25-1.3V, controlled by [[CPU]] via APS (CPU VID * 1.4)
* Voltage: 1.25-1.3V, controlled by [[CPU]] via APS (CPU VID * 1.4)
* Source: [[#V_5P0|V_5P0]]
* Source: [[#V_5P0|V_5P0]]
* Purpose: [[CPU]] VCS Power
* Purpose: [[CGPU]] VCS Power
 
==== V_EFUSE ====
* Voltage: 1.5V
* Source: [[#V_5P0|V_5P0]]
* Purpose: [[CGPU]] [[eFUSE]] Power
 
==== V_GPUPCIE ====
* Voltage: 1.5V
* Source: [[#V_3P3|V_3P3]]
* Purpose: [[CGPU]] [[PCIe]] Power


==== V_MEM ====
==== V_MEM ====
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* Source: [[#V_12P0|V_12P0]]
* Source: [[#V_12P0|V_12P0]]
* Purpose: [[RAM]] Power
* Purpose: [[RAM]] Power
==== V_SBPCIE ====
* Voltage: 1.83V
* Source: Tied to [[#V_CPUPLL|V_CPUPLL]]
* Purpose: [[Southbridge]] [[PCIe]] Power
* Only present on [[Trinity]]


{{Motherboard Components}}
{{Motherboard Components}}

Revision as of 21:39, 5 June 2023

For Original Xbox 360, see Power Rails (Original).

The Xbox 360 S and Xbox 360 E motherboards have various rails which power components of the system.

Main Power

V_12P0

V_1P2

  • Voltage: 1.2V
  • Source: V_3P3
  • Multipurpose System Power
  • Not present on Trinity

V_1P8

V_3P3

  • Voltage: 3.3V
  • Source: V_12P0
  • Multipurpose System Power

V_5P0

  • Voltage: 5V
  • Source: V_12P0
  • Multipurpose System Power

V_CPUCORE

  • Voltage: 0.9-1.2V, controlled by CPU via APS
  • Source: V_12P0
  • Purpose: CGPU Power

V_CPUEDRAM

V_CPUPLL

  • Voltage: 1.83V
  • Source: V_3P3
  • Purpose: CGPU PLL Power

V_CPUVCS

  • Voltage: 1.25-1.3V, controlled by CPU via APS (CPU VID * 1.4)
  • Source: V_5P0
  • Purpose: CGPU VCS Power

V_EFUSE

V_GPUPCIE

V_MEM

  • Voltage: 1.8V
  • Source: V_12P0
  • Purpose: RAM Power

V_SBPCIE


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