Difference between revisions of "PS2X49"
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== Features == | == Features == | ||
| − | I like retro-computers. Most of the retro-computer projects use PS/2 keyboards 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. | + | 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 | * PS/2 keyboard/mouse interface | ||
* Two PS/2 connectors | * Two PS/2 connectors | ||
| + | ** By convention purple for keyboard and green for mouse | ||
* Power options for 3.3V or 5V | * Power options for 3.3V or 5V | ||
** 3.3V/5V Host and 3.3V/5V Keyboard/Mouse | ** 3.3V/5V Host and 3.3V/5V Keyboard/Mouse | ||
| Line 20: | Line 21: | ||
* Optional bi-directional level translator [https://www.ti.com/lit/ds/symlink/txs0104e.pdf TXS0104EDR] | * Optional bi-directional level translator [https://www.ti.com/lit/ds/symlink/txs0104e.pdf 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) | ||
| + | |||
| + | [[File:TXS0108Arch.PNG]] | ||
| + | |||
| + | == PS/2 Interface Description == | ||
| + | |||
| + | * [http://www.burtonsys.com/ps2_chapweske.htm PS/2 Keyboard/Mouse details] | ||
| + | * [https://en.wikipedia.org/wiki/PS/2_port Wikipedia on PS/2] | ||
== Connectors == | == Connectors == | ||
| Line 36: | Line 46: | ||
* PWR1 is the power to the PS/2 #1, #2 connectors | * PWR1 is the power to the PS/2 #1, #2 connectors | ||
| − | * +3.3V connections are | + | * +3.3V connections are needed when the TXS0104 translator is installed |
| + | * Routing | ||
| + | ** CLK1, DAT1 go to J1 | ||
| + | ** CLK2, DAT2 go to J2 | ||
[[File:J3-schem.PNG]] | [[File:J3-schem.PNG]] | ||
Latest revision as of 18:09, 16 May 2022
Contents
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
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
