CDB4271
14
3.2
Advanced Window
Clicking the “Advanced...” button on the main window will launch a graphical register map of
the CS4271. Changes made to the register map will be immediately reflected in the main win-
dow, so you may wish to arrange them so that they do not obscure each other. When in I
2
C
mode, the “Update” button will read the registers of the CS4271 and update the Advanced
Register Settings box to match. See Figure 3 below.
3.3
I²C Mode No Acknowledge Error
The control port of the CS4271 requires the presence of an MCLK signal for correct opera-
tion. Because of this, if the board is set up to receive MCLK from a source that isn’t actively
providing the signal, a no acknowledge error may result. This means that the GUI is expecting
an acknowledgement from the CS4271, but isn’t receiving it. If this occurs, ensure that the
appropriate source of MCLK is providing the signal. For example, if the board is set up to re-
ceive MCLK from the header, be sure that there is an active MCLK signal applied to the
MCLK position on the header (J26). See Figure 4 below.
Figure 3. Advanced Window
Figure 4. I²C Error Message
Summary of Contents for CDB4271
Page 16: ...CDB4271 16 5 SCHEMATICS AND LAYOUT Figure 6 Hierarchy Schematic Sheet 1 ...
Page 17: ...CDB4271 17 Figure 7 CS4271 Schematic Sheet 2 ...
Page 18: ...CDB4271 18 Figure 8 Analog Input Schematic Sheet 3 ...
Page 19: ...CDB4271 19 Figure 9 Analog Output Schematic Sheet 4 ...
Page 20: ...CDB4271 20 Figure 10 CS8416 S PDIF Receiver Schematic Sheet 5 ...
Page 21: ...CDB4271 21 Figure 11 CS8406 S PDIF Transmitter Schematic Sheet 6 ...
Page 22: ...CDB4271 22 Figure 12 Board Setup Schematic Sheet 7 ...
Page 23: ...CDB4271 23 Figure 13 PCM Header Schematic Sheet 8 ...
Page 24: ...CDB4271 24 Figure 14 Control Port Schematic Sheet 9 ...
Page 25: ...CDB4271 25 Figure 15 Power Schematic Sheet 10 ...
Page 26: ...CDB4271 26 Figure 16 Component Placement and Reference Designators ...
Page 27: ...CDB4271 27 Figure 17 Top Layer ...
