Datasheet

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3.2 User Options
The PCA ships in a state that enables immediate evaluation of the digital-to-analog converter (DAC).
However, you can reconfigure various options through hardware. This chapter discusses these options to
ensure that any reconfiguration is conducted properly.
The hardware on the PCA falls into various groups:
• 18 jumpers
• 4 wire links
Table 3-1 lists jumper options, a brief description of each function, and information on where the option
can be found.
Table 3-1. Jumper Functions
Jumper
Function Description Section Comment
Reference
W1 ~OE input for the SN74LVT245B buffers 3.4/3.4.2 Wire link
W2 Selects CLKOUT signal from the DSP or clock input from signal gen. 3.8/3.8.1
W3 Selects external or internal Vref. 3.5.1/5.3.2
W4 Supplies external Vref to the DAC 3.5.1/ 3.5.2 Wire link
W5 Selects binary input mode or 2s complement input mode to the DAC 4.2 Wire link
W6 Selects IOUT1 or IOUT2 output from DAC to amplifier or transformer 4.3
W7 Selects IOUT1 or IOUT2 output from DAC to amplifier or transformer 4.3
Configures the op amp for either differential input, noninverting or inverting
W8 3.8.3
mode
W9 Configures the op amp for inverting, noninverting or differential mode 3.8.3 Wire link
Figure 3-2 indicates the physical locations of this hardware.
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SLAU032C– February 2001– Revised April 2011 User Configurations
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