10
3M
™ Multi-Touch ASIC Controller Reference Guide
3M Touch Systems, Inc. Proprietary Information
Table 3. Serial Cable for PX5nnn Series Controllers
PC Side (9-Pin D)
Controller Side
(8-Pin Molex)
Pin
RS-232 Assigned
Jumpered to:
Pin Description
1
Data Carrier Detect (DCD)
4 and 6 DTR and DSR
8
DCD, DTR, DSR
2
Receive Data (RXD)
2
Transmit Data (TXD)
3
Transmit Data (TXD)
3
Receive Data (RXD)
4
Data Terminal Ready (DTR) 1 and 6 DCD and DSR
8
DCD, DTR, DSR
5
Signal Ground
5
Power supply ground
6
Data Set Ready (DSR)
1 and 4 DCD and DSR
8
DCD, DTR, DSR
7
Request to Send (RTS)
1
Request to Send (RTS)
8
Clear to Send (CTS)
4
Clear to Send (CTS)
9
Not Used
Do not ground
Sleeve 5V (not used)
6
DC power jack (Not Used)
Pin
Ground
7
Cable shield connected to
ground. DC power jack
ground
Sensor Connection
Each controller has a unique set of sensor ZIF mating connectors. The schematics define
the number of pins and the BOM defines the vendor part number for each. The sensor
flex tails should be plugged directly into the controller connectors.
Note:
ZIF connectors can be fragile. Do not force these connectors open. These ZIF
connectors are not removable; they must be opened/released to connect or disconnect a
cable from them.
Take the tail straight from the sensor and carefully align with the ZIF connector.
