Motherboard
For a list of differences between these mainboards, also see Hardware Revisions.
Contents
Xbox 1.0
The following table is based on an 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> |
USB Daughterboard
| Device | Part Number | Manufacture | Description |
|---|---|---|---|
| U2 | TUSB2046B | Texas Instruments | 4-Port Hub for USB w/Optional Serial EEPROM Interface |
Part TUSB2046B has the following errata published by the Manufacturer (Ref https://www.ti.com/lit/pdf/sllz051). This is handled by the XDK software driver:
TI has found that the TUSB2046B (also TUSB2077A and TUSB2036) has a slight violation in the manner that it determines the intended speed of an attached downstream device.
By the intent of the USB specification (shown in Figure 7-19), the speed should be determined by sampling the DP or DM line following a 100ms debounce interval after either signal (DP or DM) first crosses the VIH threshold. The TUSB2046B (TUSB2077A, TUSB2036) actually samples the speed at the first VIH crossing and latches this value. This issue has only been observed recently with newer devices that either drive DM high or show excessive ringing during the initial connection, hence causing the speed detection to be seen as slow speed by the TUSB2046B (TUSB2077A, TUSB2036). Note that this device is used extensively in the USB 1.1 Gold tree suite, and this issue was never revealed, further pointing to the fact that some newer devices have less control on DM than previous devices, although this is allowed by the USB specification. TI has no planned fix in the pipeline but wants users to be aware of this issue, which can easily be avoided by guaranteeing that DP be asserted high before DM. In the event that a false low-speed detection is observed, the situation can be resolved by performing a CLEAR_PORT_FEATURE(PORT_ENABLE) followed by a RESET_PORT in the software driver, assuming both DP and DM are now stable.
Xbox 1.1
- PCB scan by SICKmods[FIXME]
[FIXME]
Xbox 1.2
[FIXME]
Xbox 1.3
[FIXME]
Xbox 1.4
Xbox 1.5
[FIXME]
Xbox 1.6
- PCB scan by SICKmods[FIXME]
[FIXME]
