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| Home > User I/O Connections > The RealView ICE User I/O connector | |||
This section describes the User Input/Output (I/O) connector.
The User I/O connector is situated on an end panel of the RealView ICE run control unit (see Figure 1.1). The connector is a 10-way 2.54mm pitch IDC header that mates with IDC sockets mounted on a ribbon cable (see Figure B.1).
You must establish a common ground between the RealView ICE run control unit and the target hardware before you connect any of the User I/O signals.
Table B.1 shows the User I/O pin connections.
Table B.1. User I/O pin connections
Pin | Signal | I/O | Description |
|---|---|---|---|
Pin 1 | Output 1 | Output | This is a user output bit. It operates at a 3.3V swing, with a 100Ω series resistance. |
Pin 2 | Output 2 | Output | This is a user output bit. It operates at a 3.3V swing, with a 100Ω series resistance. |
Pin 3 | Output 3 | Output | This is a user output bit. It operates at a 3.3V swing, with a 100Ω series resistance. |
Pin 4 | Output 4 | Output | This is a user output bit. It operates at a 3.3V swing, with a 100Ω series resistance. |
Pin 5 | Output 5 | Output | This is a user output bit. It operates at a 3.3V swing, with a 100Ω series resistance. |
Pin 6 | Input 1 | Input | This is a user input bit. It has a 10kΩ weak pull-up to the unit internal +3.3V supply, and requires a Vih(min) of 2.0V and a Vil(max) of 0.8V. It can safely be driven by 5V logic levels, and has Electro Static Discharge (ESD) protection greater than the 2kV human body model. This pin is not currently supported. |
Pin 7 | Output 6 | Output | This is a copy of the trigger output on the end panel (see Figure 1.1). It operates at a 3.3V swing, with a 100Ω series resistance. |
Pin 8 | Input 2 | Input | This is a copy of the trigger input on the end panel (see Figure 1.1). It has a 10kΩ weak pull-up to the unit internal +3.3V supply, and requires a Vih(min) of 2.0V and a Vil(max) of 0.8V. It can safely be driven by 5V logic levels, and has ESD protection greater than the 2kV human body model. This pin is not currently supported. |
Pin 9 | +3.3V | Output | This is intended for powering external signal conditioning circuitry, to a maximum current of 100mA. Incorrect use of this output might cause the RealView ICE run control unit to enter current limit. |
Pin 10 | GND | - | - |
Input is not currently supported on the User I/O pin connections.