Power Rails (S/E): Difference between revisions

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Line 8: Line 8:
* Voltage: 12V
* Voltage: 12V
* Source: [[Power Supply]]
* Source: [[Power Supply]]
* Purpose: Full-On System Power, Sub-Rail Power
* Purpose: Main Power Supply


==== V_1P2 ====
==== V_1P2 ====
* Voltage: 1.2V
* Voltage: 1.2V
* Source: [[#V_3P3|V_3P3]]
* Source: [[#V_3P3|V_3P3]]
* Purpose: [[KSB]] Power
* Multipurpose System Power
* Not present on [[Trinity]]
* Not present on [[Trinity]]


Line 19: Line 19:
* 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]]), [[#V_3P3|V_3P3]] ([[Corona]] and newer)
* Purpose: [[Southbridge]] and [[HANA]] Power
* Multipurpose System Power


==== V_3P3 ====
==== V_3P3 ====
* Voltage: 3.3V
* Voltage: 3.3V
* Source: [[#V_12P0|V_12P0]]
* Source: [[#V_12P0|V_12P0]]
* Purpose: [[Southbridge]] and [[HANA]] Power, Sub-Rail Power
* Multipurpose System Power


==== V_5P0 ====
==== V_5P0 ====
* Voltage: 5V
* Voltage: 5V
* Source: [[#V_12P0|V_12P0]]
* Source: [[#V_12P0|V_12P0]]
* Purpose: USB and Sub-Rail Power
* Multipurpose System Power


==== V_CPUCORE ====
==== V_CPUCORE ====

Revision as of 21:31, 5 June 2023

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

Main Power

V_12P0

  • Voltage: 12V
  • Source: Power Supply
  • Purpose: Main Power Supply

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: CPU PLL Power

V_CPUVCS

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

V_MEM

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