pinouts

PS/2 to Serial Mouse Adapter

pinout (распиновка)

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This adapter will enable you to use a mouse with a 6 pin Mini-DIN (PS/2) connector to a computer with a 9 pin D-SUB (Serial) connector. This requires that the mouse handles both protocols. A mouse like this is sometimes referred to as a combo-mouse.

разъем 6 pin MINI-DIN FEMALE (PS/2 STYLE)
6 pin MINI-DIN FEMALE (PS/2 STYLE) connector  to the mouse

The "Serial Mouse" uses a RS-232 style interface with -5 to -12 VDC as logical "1" and +5 to +12 VDC as logical "0". The PS/2 mouse interface is a TTL-style interface, which uses 0 - +2 VDC as logical "0" and +3 - +5 VDC as logical "1".

In addition - and to make things worser - the RS-232 is an asynchronous interface, the PS/2 interface is a synchronous, where the data is sent along with a clock signal. It uses a simplified 4-wires serial interface with +5VDC (for the transceiver), GND, keyboard / mouse clock and keyboard / mouse data. The data and clock line can be used from the keyboard / mouse controller and the attached device as well following a particular handshake, which defines which is the active "sender" and which is the "receiver". So: it is not *that* easy conversing serial mouse to PS/2 and vice versa.

The "dual mode" mice have an automatic logic detection and sort of adaptive interface electronic, which detects whether the mouse is attached to a serial port or a PS/2 port and set the output drivers accordingly.

Mini-DIN D-SUB
GND 3 5 GND
RxD 2 2 RxD
TxD 6 3 TxD
+5V 4 7 RTS

9 pin D-SUB FEMALE
9 pin D-SUB FEMALE connector  to the computer
Pinouts.ru > Кабели и переходники для клавиатур, мышей и т.д. >  Распиновка PS/2 to Serial Mouse Adapter использующего разъем 6 pin MINI-DIN FEMALE (PS/2 STYLE) и разъем 9 pin D-SUB FEMALE

Источник(и): Hardware Book, Tomas Ogren, Thomas Eschenbacher
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