CDB42438 Cirrus Logic Inc, CDB42438 Datasheet - Page 14

• Manufacturer Part Number: CDB42438
• Description: Eval Bd 108dB 6&8ch Multi-Chnl CODECs
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42438

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42438
• Primary Attributes: 6 Single-Ended and 2 Differential Analog Inputs and 8 Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: Graphic User Interface
• Description/function: Audio CODECs
• Operating Supply Voltage: 5 V to 12 V
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: CS42438
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1500

CDB42438
3.6
Bypass Control - Advanced
The DSP clocks and data may be routed through buffers directly to the CS42438, bypassing
the FPGA. This configuration may be desired for more stringent timing requirements at higher
clock speeds. See register “Bypass Control (address 06h)” on page 19. These bits are only
accessible through the Advanced tab of the Cirrus Logic FlexGui software.
Setting “Bypass_FPGA” to ‘0’b will route the DSP sub-clocks directly to the CODEC. “DSP-
DATA->DAC” and “SDOUT->DSP” should also be set to ‘0’b in bypass mode.
NOTE: To avoid contention with the FPGA, set the clock direction for the FPGA appropriately: The FPGA->CO-
DEC bits in register 03h must be set to ‘1’b.
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