Cirrus Logic CS2600 Programming Manual page 20

4 CDB2600-DC-SKT Reference Clock Selection
The CS2600 frequency reference (REF_CLK) can be provided using a crystal, external reference, or internal oscillator.
This section describes how to configure the reference clock on the CDB2600-DC-SKT daughter card.
Note that the choice of reference has no effect on OTP programming. The REF_CLK options are documented here as the
CDB2600-DC-SKT board is not described in the Hazelburn user guide.
The frequency reference (REF_CLK) is provided by a 12 MHz crystal (Y1) on the daughter card by default. Alternative
sources for REF_CLK are configured using 0 Ω resistor links and PCB jumper connections
The daughter card configuration for each option is described as follows.
• The 12 MHz crystal Y1 on the daughter card is the default REF_CLK source. The part number of the crystal is
NX3225SA-12.000M-STD-CRS-2 (SMD/SMT crystal); further information can be found in the crystal datasheet.
The daughter card configuration default) is R3, R populated 0 Ω); R , R6, R , R8, R9 non-populated.
The configuration is illustrated in Figure 24.
Figure 24 Daughter Card with Crystal Y1 Reference Clock Option (R3 and R4)
AN0650R1 Cirrus Logic
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Copyright 2024 Cirrus Logic, Inc. and Cirrus Logic International Semiconductor Ltd.
R7
R5
R4
R3
R8
R9
R6
AN0650
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