Cirrus-logic CDB5378 Manuale Utente Scaricare il pdf (Pagina 43)

CDB5378

DS639DB4 43

3.3.4 Test Bit Stream

The Test Bit Stream sub-panel configures test bit stream (TBS) generator parameters. The digitial filter

data sheet describes TBS operation and options.

The DAC Quick Set controls automatically set the Interpolation, Clock Rate, and Gain Factor controls

based on the selected Mode, Freq, and Gain. Additional configurations can be programmed by writing the

Interpolation, Clock Rate, and Gain Factor controls manually.

Any changes made under this sub-panel will not be applied to the target board until the Configure button

is pushed. The Configure button writes the new configuration to the target board and then enables the

data Capture button.

Control Description

DAC Quick Set Automatically sets test bit stream options. Mode selects sine or impulse output mode,

Freq selects the test signal frequency for sine mode, and Gain selects the test signal

amplitude in dB.

Interpolation Manual control for the data interpolation factor of the test bit stream generator.

Clock Rate Manual control for the output clock and data rate of the test bit stream generator.

Gain Factor Manual control to set the test bit stream signal amplitude.

Sync Enables test bit stream synchronization by the MSYNC signal.

Loopback Enables digital loopback from the test bit stream generator output to the digital filter

input.

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Cirrus-logic CDB5378 Manuale Utente Pagina 43