HardLabs

AudioYM2151

ddraig68k·hardware·expansion/AudioYM2151/AudioYM2151.kicad_pcb

AudioYM2151 PCB layout, top view — open source board by ddraig68k

About the AudioYM2151 PCB

AudioYM2151 is an open source PCB design by ddraig68k, published on GitHub under the MIT license. It is a 4-layer board measuring 100 × 100 mm, with 54 components from 28 distinct parts.

Other key parts include the XC95144XL-TQ100, 74LS125, LTC6903, YM2151 and YM3012. By type, the board carries 31 capacitors, 7 ICs, 6 resistors, 4 inductors, 3 connectors and 1 transistor.

It belongs with the audio designs in this gallery.

From the project

Schematic and CAD files for my 68K based computer

The YM2151 is a Yamaha FM synthesis chip with 8 channels, each of which has 4 operators. The YM2151 was used in many Arcade games, including games like Outrun and Ghouls 'n Ghosts.

The YM2151 has a digital output so requires a YM3012 10-bit 2-channel DAC to generate the analoge output. The output of the DAC is fed into a TPA3122D2 15-W Amplifier.

A LTC6903 1kHz – 68MHz Programmable Oscillator is used to generate the clock for the YM2151. I chose to use a programmable oscillator here rather than a fixed frequency crystal was mainly to be able to play back VGM and other music files. Depending…

AudioYM2151, from the project README
From the project README

Main components on the AudioYM2151

XC95144XL-TQ10074LS125LTC6903YM2151YM3012TL064TPA3122D2

AudioYM2151 bill of materials (BOM)

54 components, 28 distinct parts.

QtyPartRefs
1
XC95144XL-TQ100
U1
1
74LS125
U2
1
LTC6903
U3
1
YM2151
U4
1
YM3012
U5
1
TL064
U6
1
TPA3122D2
U7
1
2N4403
Q1
1
JTAG
J1
1
D68K_64PIN_BOARD
J2
1
Audio Out
J3
1
10K
RV1
1
LED
D1
4
22uH
L1, L2, L3, L4
13
100nF
C1, C2, C3, C5, C6, C9, C10, C11 +5
3
10uF
C4, C7, C13
3
10nF
C8, C16, C17
1
1nF
C15
1
220uF
C18
4
1uF
C21, C22, C24, C25
Show 8 more
QtyPartRefs
2
220nF
C26, C27
2
680nF
C28, C29
2
470uF
C30, C31
1
10K
R2
1
220R
R3
1
560R
R4
2
4K7
R5, R6
1
4K7
RN1

AudioYM2151 design files

The KiCad project lives in the ddraig68k/hardware repository on GitHub; these links point at the commit this page was built from.

AudioYM2151: common questions

How big is the AudioYM2151 PCB?

The AudioYM2151 measures 100 × 100 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the AudioYM2151?

54 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the AudioYM2151 design files?

From the ddraig68k/hardware repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the AudioYM2151 design in my own project?

Yes, under the terms of its MIT license, which ddraig68k chose for the repository.

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