PS2X49

Features

I like retro-computers. Most of the retro-computer projects use PS/2 keyboards and mice due to the ease of interfacing. I found panel mount connectors nice but hard to find and somewhat expensive. This card works well for the need.

• PS/2 keyboard/mouse interface
• Two PS/2 connectors
  • By convention purple for keyboard and green for mouse
• Power options for 3.3V or 5V
  • 3.3V/5V Host and 3.3V/5V Keyboard/Mouse
  • Option for bi-directional level translator TXS0104EDR
    • 10K pull-ups on both sides
• Bypass resistors for direct connection

Level Shifter Details

• Optional bi-directional level translator TXS0104EDR
  • 10K pull-ups on both sides
• 0.65V to 3.6 V on A port and 2.3 V to 5.5 V on Bport (VCCA≤VCCB)

PS/2 Interface Description

• PS/2 Keyboard/Mouse details
• Wikipedia on PS/2

Connectors

J1 - PS/2 #1

• Standard PS/2 Mini-DIN female connector
• Color codes Purple = Keyboard

J2 - PS/2 #2

• Standard PS/2 Mini-DIN female connector
• Color codes Green = Mouse

J3 - Host connection

• PWR1 is the power to the PS/2 #1, #2 connectors
• +3.3V connections are needed when the TXS0104 translator is installed
• Routing
  • CLK1, DAT1 go to J1
  • CLK2, DAT2 go to J2

Assembly Sheet

• PS2X49 Assembly Sheet
• PS2X49 Rev 3 Assembly Sheet