multiPort™ (CN6)

RTD’s exclusive multiPort can be configured as an Advanced Digital I/O (aDIO™), a parallel port, or a floppy drive. Refer to Chapter 4, Using the cpuModule, to configure the multiPort.

multiPort Electrostatic Discharge (ESD) and Undershoot Protection

The multiPort interface provides electrostatic discharge (ESD) protection allowing the aDIO port, parallel port, and floppy port circuits to be protected from electrically charged external objects that may come in contact with the cpuModule.

The ESD protection minimizes susceptibility of the circuitry to ESD from human contact, and is rated to withstand up to 2000V with the Human Body Model (HBM) standardized ESD test. The protected circuitry is also rated to protect against up to 1000V with the Charged Device Model (CDM) standardized ESD test.

In addition to the ESD protection, the circuitry also provides -2V undershoot protection by ensuring that the pins remain in the off state when such voltage levels are connected as inputs to the cpuModule.

For specific electrical characteristics, refer to Table 4 on page 13.

multiPort Configured as an Advanced Digital I/O (aDIO™) Port

The mulitPort connector (CN6) can be configured as an aDIO port. aDIO is 16 digital bits configured as 8-bit programmable and 8-bit port programmable I/O, providing any combination of inputs and outputs. Match, event, and strobe interrupt modes mean no more wasting valuable processor time polling digital inputs.

Interrupts are generated when the 8-bit programmable digital inputs match a pattern, or on any value change event. Bit masking allows selecting any subgroup of 8 bits. The strobe input latches data into the bit programmable port and generates an interrupt. Refer to multiPort: Advanced Digital I/O Ports (aDIO™) on page 62 for information on programming the multiPort.

Table 27 multiPort aDIO Pinout

CN6 Pin

Function

CN6 Pin

Function

 

 

 

 

1

strobe 0

2

P0-4

 

 

 

 

3

P1-0

4

P0-5

 

 

 

 

5

P1-1

6

P0-6

 

 

 

 

7

P1-2

8

P0-7

 

 

 

 

9

P1-3

10

strobe 1

 

 

 

 

11

P1-4

12

GND

 

 

 

 

13

P1-5

14

GND

 

 

 

 

15

P1-6

16

GND

 

 

 

 

17

P1-7

18

GND

 

 

 

 

19

P0-0

20

GND

 

 

 

 

21

P0-1

22

GND

 

 

 

 

23

P0-2

24

GND

 

 

 

 

25

P0-3

26

+5 V

 

 

 

 

42 CMX158886 cpuModule

BDM-610000049 Rev G

Page 51 Page 53
Page 52
Image 52
IBM BDM-610000049 MultiPort CN6, MultiPort Configured as an Advanced Digital I/O aDIO Port, MultiPort aDIO Pinout
Page 51 Page 53

BDM-610000049 specifications

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