14
DS773DB1
CDB42L55
4.4
DSP Engine Tab
The “DSP Engine” tab provides high-level control functions to modify the SDIN (PCM) data volume level,
the ADC output/SDIN mix volume level, Tone Control and Beep Generator. Status text detailing the CO-
DEC’s specific configuration is shown inside the control group of the affected control. This text will change
depending on the setting of the associated control. A description of each control group is outlined below (a
description of each register is included in the CS42L55 data sheet):
Digital Volume Control
- Configures the volume/gain of the ADC mix or the PCM data from the serial data
input (SDIN) in the DSP.
Tone Control
- Sets the corner frequencies and the volume/gain of the treble and bass shelving filters in the
DSP engine.
Beep Generator
- Controls for setting the various beep parameters.
Update -
Reads all registers in the CS42L55 and reflects the current values in the GUI.
Reset
- Resets the CS42L55.
Figure 7. DSP Engine Tab
Summary of Contents for CDB42L55
Page 25: ...DS773DB1 25 CDB42L55 8 CDB42L55 SCHEMATICS Figure 37 CS42L55 Analog I O Schematic Sheet 1 ...
Page 26: ...26 DS773DB1 CDB42L55 Figure 38 S PDIF Digital Interface Schematic Sheet 2 ...
Page 27: ...DS773DB1 27 CDB42L55 Figure 39 PLL oscillator and external I O connections Schematic Sheet 3 ...
Page 28: ...28 DS773DB1 CDB42L55 Figure 40 Microcontroller and FPGA Schematic Sheet 4 ...
Page 29: ...DS773DB1 29 CDB42L55 Figure 41 Power Schematic Sheet 5 ...
Page 30: ...30 DS773DB1 CDB42L55 9 CDB42L55 LAYOUT Figure 42 Silk Screen ...
Page 31: ...DS773DB1 31 CDB42L55 Figure 43 Top Side Layer ...
Page 32: ...32 DS773DB1 CDB42L55 Figure 44 GND Layer 2 ...
Page 33: ...DS773DB1 33 CDB42L55 Figure 45 Power Layer 3 ...
Page 34: ...34 DS773DB1 CDB42L55 Figure 46 Bottom Side Layer ...
Page 35: ...DS773DB1 35 CDB42L55 10 REVISION HISTORY Revision Changes DB1 Initial Release ...
