PC104 View Datasheet(PDF) - PMD
Part Name
Description
MFG CO.
'PC104' PDF : 70 Pages View PDF
5
Navigator-PC/104 Electrical Reference
5.4 Command Summary - ReadIO, WriteIO
Card-specific features are accessed through the Navigator’s general-purpose I/O addressing scheme.
These card-specific functions can be accessed using the ReadIO and WriteIO commands, or through
convenient ‘packaged’ board-specific C-Motion commands. See section 4, Developing Your Own Applica-
tions with C-Motion, page 51, for more information.
The following table shows the overall address map for the ReadIO and WriteIO functions supported
by the Navigator-PC/104 cards.
Address
0
1
2
3
4
0xFF
Register
Digital I/O
Amplifier &
DAC enable
Reset monitor
Unused
Watchdog
Card ID
Description
Register which allows 8 general purpose digital input and output
signals to be
read from and written to.
Register which allows AmpEnable1-4 output signals (which can also
be used as a general purpose outputs to be written to and verified,
and which allows DAC enable output function to be written to and
verified).
Register which allows reset monitor to be checked and reset.
Register which allows watchdog function +0 be activated and updated.
Register which allows Card ID word to be read.
5.4.1 General Purpose Digital I/O Control Register
(Address +0)
The following table details the digital I/O control register
Address
0
Bit
location
0-7
8-15
Signals
Digital input signals
Digital output signals
5.4.2 Amplifier & DAC Enable Control Register
(Address +1)
The following table details the amplifier & DAC enable register
Address
1
Bit
location
0-3
4-6
7
8-11
12-14
15
Signals
Amplifier enable outputs (0-3)
Unused
DAC enable status (1 = enabled, 0 = disabled)
Change mask for bits 0-3 - amplifier enable outputs
(1 = change, 0 = don’t change)
Unused
Change mask for DAC enable
(1 = change, 0 = don’t change)
66
Navigator-PC/104 User’s Guide
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