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dc2183af
DEMO MANUAL DC2183A
SERIAL PROGRAMMING
PScope has the ability to program the DC2183 board
serially through the DC1371. There are several options
available for the LTC2107 that are only available through
serial programming. PScope allows all of these features
to be tested.
These options are available by first clicking on the Set
Demo Bd Options icon on the PScope toolbar (Figure 3).
Figure 3. PScope Toolbar
This will bring up the menu shown in Figure 4.
Figure 4. Demobd Configuration Options.
This menu allows any of the options available for the
LTC2107 to be programmed serially. The LTC2107 has
the following options:
Sleep Mode
– Selects between normal operation and
sleep mode:
•
Off (Default) – Entire ADC is powered, and active
•
On – The entire ADC is powered down
Dither
– Selects between internal dither being enabled
or disabled:
•
Enabled (Default) – Internal dither enabled
•
Disabled – Internal dither disabled
Gain (PGS)
– Selects input range of the ADC:
•
1.0 (Default) – Selects the 2.4V input range
•
1.5 – Selects the 1.6V input range
Duty Cycle Stabilizer
– Enables or disables duty cycle
stabilizer:
•
Stabilizer off (Default) – Duty cycle stabilizer disabled
•
Stabilizer on – Duty cycle stabilizer enabled
ClkOut Invert
– Selects the polarity of the CLKOUT signal:
•
Disabled (Default) – Normal CLKOUT polarity
•
Enabled – CLKOUT polarity is inverted
ClkOut Phase
– Selects the phase delay of the CLKOUT signal:
•
0 deg (Default) – No CLKOUT delay
•
45 deg – CLKOUT delayed by 45 degrees
•
90 deg – CLKOUT delayed by 90 degrees
•
135 deg – CLKOUT delayed by 135 degrees
keep Alive Osc
– Enables or disables the internal keep
alive oscillator:
•
Disabled (Default) – Keep alive oscillator is disabled
•
Enabled – Keep alive oscillator is enabled
Quick start proceDure
