Motherboard

2017-08-30T10:52:05Z

Obcd:

[[File:Xbox-Motherboard-BR.jpg|400px|thumb|right|Xbox Version 1.0 Motherboard]]
== Mainboard ==

The following table is based on a Xbox 1.0{{citation needed}} retail board and credits go to PiXEL8
{| class="wikitable"
!| Device
! Loc.
! Part Number
! Manufacture
! Description
|-
| U2D1
| D-2
| Pentium III (Coppermine)
| Intel
| 733MHz CPU 133MHz FSB 16Kb L1 cache 128Kb L2 cache
|-
| U2T1
| T-2
| SC1186
| Semtech
| Programmable Synchronous DC/DC Converter
|-
| U3B1
| B-3
| LM358D
| Phillips
| Dual Operational Amplifier
|-
| U3B2
| B-4
| XGPU
| nVidia
| Graphics Processing Unit
|-
| U3R1
| R-3
| CY23S05
| Cypress
| Low-Cost 3.3V Spread Aware Zero Delay Buffer
|-
| U3T1
| T-3
| K4D263238M
| Samsung
| 1Mx32Bitx4 DDR Synchronous RAM
|-
| U4B1
| B-4
| CX25871
| Conexant
| Digital Video Encoder (same pinout as Bt868/869)
|-
| U4G1
| G-5
| SC1110CS
| Semtech
| Sink and Source DC/DC Controller for Termination Power Supply
|-
| U5F1
| F-5
| K4D263238M
| Samsung
| 1Mx32Bitx4 DDR Synchronous RAM
|-
| U6A1
| A-6
| LF353
| Texas Instruments
| Dual General-Purpose JFET-input Operational Amplifier
|-
| U6B1
| B-6
| WM9709
| Wolfson Micro
| High-quality stereo audio DAC (Digital to Analog converter)
|-
| U6D1
| D-6
| K4D263238M
| Samsung
| 1Mx32Bitx4 DDR Synchronous RAM
|-
| U6E1
| E-6
| MCPX
| nVidia
| Media and Communications Processor
|-
| U6F1
| F-6
| ADM1032
| Analog Devices
| +-1°C Remote and Local System Temperature Monitor
|-
| U6N1
| N-6
| K4D263238M
| Samsung
| 1Mx32Bitx4 DDR Synchronous RAM
|-
| U7B1
| B-7
| 1893AF
| Integrated Circuit Systems
| 3.3V 10Base-T/100Base-TX Integrated PHYceiver
|-
| U7B2
| B-7
| PIC16LC63A-04/S0
| Microchip
| Low voltage 8bit CMOS microcontroller with A/D converter
|-
| U7C1
| C-7
| 388R
| Integrated Circuit Systems
| Quad PLL Quick Turn Clock Synthesizer
|-
| U7C2
| C-7
| BR24C02
| Rohm
| I2C BUS compatible Serial EEPROM
|-
| U7C3
| C-7
| 331M
| Integrated Circuit Systems
| Single Output Clock
|-
| U7D1
| D-7
| M29F080A
| ST Microelectronics
| 8 MBit (1MB X8, Uniform block) single supply flash memory
|-
| U7P1
| P-7
| <empty>
| <n/a>
| <n/a>
|}

Only the 1.0 and 1.1 {{citation needed}} had a USB daugtherboard
Correction: only the 1.0 has the USB daughterboard, a GPU fan and the MCPX 1.0
{| class="wikitable"
!| Device
! Part Number
! Manufacture
! Description
|-
| U2
| TUSB2046B
| Texas Instruments
| 4-Port Hub for USB w/Optional Serial EEPROM Interface
|}

== References ==
* [https://web.archive.org/web/20040826151041/http://console-dev.com:80/IC.htm http://console-dev.com:80/IC.htm]

Power Supply

2017-07-16T15:05:24Z

Obcd:

It's a delta electronics power{{citation needed}}

On a 1.0 xbox supply, there seems to be 2 types for the US 120V and EU 240V market.
The marks are on the PCB with a check next to them
DPSN-96-AP-1 should be the EU 240V one
DPSN-96-AP is the US 120V one

There is a link J11 under CR1 (right side of the coil under it) that might make the difference between 120V and 240V
it also seems that the Bridge rectifier is bigger on the US models.
This could make sense as it has to handle double the current. So, before experimenting with this it might be worth to check
if the installed type can handle 2.3 amps.

The rated output currents are also noted on the PCB

3V3 Standby 0.075A
3V3 4.8A
5V 13.2A
12V 1.2A

A pc ATX supply needs a line pulled to GND to turn on the supply. The xbox supply needs a voltage (3V3?) on it's power on line to turn the supply on.

== Connector pinout ==

=== Xbox 1.0 and 1.1 ===

{| class="wikitable"
! Pin || Usage
|-
| Pin 1 || +12V
|-
| Pin 2 || +5V
|-
| Pin 3 || +5V
|-
| Pin 4 || +5V
|-
| Pin 5 || +3.3V
|-
| Pin 6 || +3V Standby
|-
| Pin 7 || GND
|-
| Pin 8 || GND
|-
| Pin 9 || GND
|-
| Pin 10 || GND
|-
| Pin 11 || POWON
|-
| Pin 12 || POWOK
|}

=== Xbox 1.2 and later ===

{| class="wikitable"
! Pin || Usage
|-
| Pin 1 || +5V
|-
| Pin 2 || +5V
|-
| Pin 3 || +5V
|-
| Pin 4 || None
|-
| Pin 5 || GND
|-
| Pin 6 || None
|-
| Pin 7 || +3.3V
|-
| Pin 8 || None
|-
| Pin 9 || GND
|-
| Pin 10 || POWOK
|-
| Pin 11 || +12V
|-
| Pin 12 || None
|-
| Pin 13 || +5V
|-
| Pin 14 || GND
|-
| Pin 15 || +3V Standby
|-
| Pin 16 || GND
|-
| Pin 17 || None
|-
| Pin 18 || +3.3V
|-
| Pin 19 || GND
|-
| Pin 20 || POWON
|}

== Related links ==

* [http://brandonw.net/consoles/xbox/ Describes how to turn an ATX Power-Supply to Xbox PSU]

xboxdevwiki - User contributions [en]

Motherboard

Power Supply