HardLabs

Motherboard

apistol78·rv32·schematics/motherboard/motherboard.kicad_pcb

Motherboard PCB layout, top view — open source RP2040/RP2350 board by apistol78

About the Motherboard PCB

Motherboard is an open source RP2040/RP2350 PCB design by apistol78, published on GitHub. It is a 4-layer board measuring 183.4 × 143.1 mm, with 117 components from 49 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the AZ1117EH-3.3TRG1, W25Q128JVS, USBLC6-2SC6, FE1.1s and AZ1117EH-1.2TRG1. By type, the board carries 54 capacitors, 31 resistors, 13 connectors, 11 ICs, 5 inductors and 2 crystals.

It belongs with the audio designs in this gallery.

From the project

Risc-V pipelined CPU and SoC written in SystemVerilog

After everything has been built you should be able to run the emulators:

Written using SystemVerilog and are split up into logical pieces where each stage of the pipeline is in a separate module:

Main components on the Motherboard

AZ1117EH-3.3TRG1W25Q128JVSRP2040USBLC6-2SC6FE1.1sAZ1117EH-1.2TRG1SII9022ACNUIS61LV25616ALCS4344-CZZ

Motherboard bill of materials (BOM)

117 components, 49 distinct parts.

QtyPartRefs
1
AZ1117EH-3.3TRG1
U1
1
W25Q128JVS
U2
1
RP2040
U3
3
USBLC6-2SC6
U4, U5, U6
1
FE1.1s
U7
1
AZ1117EH-1.2TRG1
U8
1
SII9022ACNU
U9
1
IS61LV25616AL
U10
1
CS4344-CZZ
U11
2
12MHz
Y1, Y2
1
RIGHT
J1
1
LEFT
J2
1
UART0
J3
1
Micro_SD_Card
J4
1
SWD
J5
3
292303-1
J7, J8, J9
1
685119134923
J10
1
AudioJack3
J11
1
SOC_NRESET
J12
1
Jack-DC
J13
Show 29 more
QtyPartRefs
1
SOC_BOOTMODE
J14
1
LED
D1
1
0.022uH
L1
3
0.022uH
L2, L3, L4
1
220uH
L5
2
10uF
C1, C32
2
100uF
C2, C33
4
27pF
C3, C4, C17, C18
11
100nF
C5, C7, C8, C9, C10, C11, C13, C14 +3
2
1uF
C6, C12
1
10uF
C20
3
10uF
C21, C22, C23
4
0.1uF
C24, C25, C26, C27
7
100nF
C28, C29, C30, C31, C45, C46, C51
11
0.1uF
C34, C35, C36, C37, C38, C39, C40, C41 +3
2
3.3uF
C47, C48
2
2.7nF
C49, C50
2
10uF
C52, C53
1
1uF
C54
2
1k
R1, R6
2
10k
R2, R18
1
33
R3
2
27
R4, R5
1
2.7k 1%
R7
6
27
R8, R9, R11, R12, R13, R32
6
4.7k
R14, R15, R16, R17, R19, R20
5
4k7
R21, R22, R23, R24, R25
4
10k
R26, R27, R30, R31
2
470
R28, R29

Motherboard design files

The KiCad project lives in the apistol78/rv32 repository on GitHub; these links point at the commit this page was built from.

Motherboard: common questions

What microcontroller does the Motherboard use?

The Motherboard is built around the RP2040, from the RP2040/RP2350 family.

How big is the Motherboard PCB?

The Motherboard measures 183.4 × 143.1 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the Motherboard?

117 components, from 49 distinct parts. The full bill of materials is listed on this page.

Where can I download the Motherboard design files?

From the apistol78/rv32 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Motherboard design in my own project?

The repository has no license, so all rights stay with apistol78. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Motherboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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