Osamu2-dis-kb-hpc Mv-mb-v1 | Schematic

osamu2-dis-kb-hpc mv-mb-v1 schematic

5. Bill of Materials (Key Items)

• J_HPC: Samtec SEAM‑30‑02.0‑S‑10‑A‑K‑TR
• J_DIS: Molex 52271‑3079
• KB controller: Microchip ATTINY1616‑SSFR
• Power: TPS65217 (PMIC) or discrete: TPS563201 (5V→3.3V)
• Diodes: 48x 1N4148W

If you can share more context (e.g., which HPC module, display model, keyboard type), I can tailor the schematic preparation further — including actual netlist, pin mapping table, or KiCad symbol suggestions.

It’s important to clarify that “osamu2-dis-kb-hpc mv-mb-v1” does not appear to be a standard, publicly documented schematic name from major vendors (e.g., Intel, AMD, NVIDIA, Raspberry Pi, or mainstream laptop/desktop boards). osamu2-dis-kb-hpc mv-mb-v1 schematic

It looks like a custom or internal project designation – possibly from: osamu2-dis-kb-hpc mv-mb-v1 schematic 5

• An open-source hardware design (e.g., a keyboard + display + HPC compute module carrier board)
• A maker or research project named “Osamu 2”
• A university or lab’ internal revision (mv-mb-v1 = maybe “mainboard version 1”)

Given that, I’ll provide a generic reverse-engineering and documentation guide for understanding such a schematic if you have the actual file (PDF, .sch, or image). J_HPC: Samtec SEAM‑30‑02

Power Sequencing

The HPC core is sensitive. The schematic likely includes a Power Sequencer IC (e.g., Texas Instruments LM388x or Analog Devices LTC2924). The timing diagram in the schematic notes:

1. Enable 3.3V_IO
2. Delay 5ms
3. Enable 1.8V_PLL
4. Delay 2ms
5. Enable 0.8V_CORE
6. Assert PGOOD -> Release HPC Reset

1.1 osamu2

• Likely meaning: Project or platform codename. "Osamu" may refer to a principal engineer, a university lab (e.g., Osamu Laboratory), or a specific processor family (possibly a RISC-V or ARM Cortex-A series).
• 2 indicates the second generation. This suggests the schematic is not a prototype but an evolution of a previous osamu1 design with proven stability.

4. Debugging or reusing the design

If you have the actual schematic and want to:

Testing checklist before firmware

1. Verify 3.3V and 5V rails under load.
2. Check USB enumeration with multimeter and scope on D+/D-.
3. Confirm matrix rows/cols read expected continuity with switches pressed.
4. Test encoder signals on an oscilloscope while turning.
5. Validate LED string drive with single LED before connecting full string.
6. Confirm I2C ACK from any attached EEPROM or OLED.

1.3 mv-mb-v1

• mv: Possibly "Multi-Voltage" or "Main Video". In many embedded standards, MV refers to variable core voltage regulation (e.g., 0.7V to 1.35V adjustable for CPU/FPGA).
• mb: Main Board – Distinguishes this from a daughterboard (db), carrier board, or backplane.
• v1: Revision 1.0 – Indicates initial production release. Future errata might be documented in v2 or v3.

Thus, the osamu2-dis-kb-hpc mv-mb-v1 schematic is the circuit diagram for a second-generation mainboard that integrates display output, keyboard input, and high-performance computing elements with multi-voltage regulation.

Page 6: High-Speed PCIe/SATA Lanes

• AC coupling capacitors (100nF) on TX pairs.
• Reference clock distribution (HCSL or LP-HCSL).