Motherboard
From xboxdevwiki
Mainboard
The following table is based on a Xbox 1.0[citation needed] retail board
| 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 1.2(?) [citation needed] had a USB daugtherboard
| Device | Part Number | Manufacture | Description |
|---|---|---|---|
| U2 | TUSB2046B | Texas Instruments | 4-Port Hub for USB w/Optional Serial EEPROM Interface |
