Power PMAC Clipper User Manual
Connections and Software Setup
51
Note
The direction of the input and output lines on this connector are
set by jumpers E14 and E15.
If E14 is removed or E15 is installed then the multiplexing feature
of the JTHW port cannot be used.
26-pin female flat cable connector T&B Ansley P/N 609-2641
Standard flat cable stranded 26-wire T&B Ansley P/N 171.26
Phoenix varioface module type FLKM 26 (male pins) P/N 22 81 05 0
Thumbwheel Port Digital Inputs and Outputs
To configure the I/O for the default jumper settings the following must be set:
Sys.WpKey = $AAAAAAAA;
Clipper[0].GpioDir[0] = $00FFFF00 // Direction Control
Clipper[0].GpioPol[0] = $0 // Polarity Control
Note that polarity and direction control can be modified to the users need for the JTHW bits if not using
this port for multiplexed I/O:
Sys.WpKey = $AAAAAAAA;
Clipper[0].GpioDir[0] = $00FF0000 // Direction Control for JTHW all inputs (1=out, 0=in)
// Also install E15
Clipper[0].GpioPol[0] = $0000FFFF // Invert Polarity Control of JTHW only
The inputs and outputs on the thumbwheel multiplexer port J8 may be used as discrete, non-multiplexed
I/O. In this case, these I/O lines can be accessed through structures:
// Inputs
Clipper[0].GpioData[0].0 // DAT0
Clipper[0].GpioData[0].1 // DAT1
Clipper[0].GpioData[0].2 // DAT2
Clipper[0].GpioData[0].3 // DAT3
Clipper[0].GpioData[0].4 // DAT4
Clipper[0].GpioData[0].5 // DAT5
Clipper[0].GpioData[0].6 // DAT6
Clipper[0].GpioData[0].7 // DAT7
Clipper[0].GpioData[0].0.8 // DAT0-7 8 bit byte
// Outputs
Clipper[0].GpioData[0].8 // SEL0
Clipper[0].GpioData[0].9 // SEL1
Clipper[0].GpioData[0].10 // SEL2
Clipper[0].GpioData[0].11 // SEL3
Clipper[0].GpioData[0].12 // SEL4
Clipper[0].GpioData[0].13 // SEL5
Clipper[0].GpioData[0].14 // SEL6
Clipper[0].GpioData[0].15 // SEL7
Clipper[0].GpioData[0].8.8 // SEL0-7 8 bit byte
Configuring Multiplexed I/O on the JTHW port
The JTHW port can be used to multiplex large numbers of inputs and outputs on the using the MuxIO
feature. Up to 32 of the multiplexed I/O boards may be daisy-chained on the port, in any combination. To
configure the JTHW port for multiplexed I/O the default jumper settings of E14 and E15 must be as
follows:
E14
Install to make GPIO 0-7 lines inputs
Remove jumper to make GPIO 0-7 lines outputs
Installed (Required for MuxIO)
E15
Install to make GPIO 8-15 lines inputs
Remove jumper to make GPIO 8-15lines outputs
Not Installed (Required for MuxIO)
