B.1. 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).

Figure B.1. User I/O pin connections


Warning

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

-

-


Note

Input is not currently supported on the User I/O pin connections.

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