Cirrus Logic CS2600 Programming Manual page 2

1 Hardware Connections and OTP Programming Supply
The CS2600 requires an OTP programming supply (VDD_OTP) when programming the OTP memory. The programming
supply may be provided internally or externally, depending on the system supply voltage (VDD).
• If the VDD supply is 3.3 V, the programming supply can be provided using an internal LDO regulator; in this case,
the output of the regulator, VLDO_OTP, should be connected to VDD_OTP.
• If the VDD supply is 1.8 V, the programming supply must be provided externally.
The typical connections in each case are shown in Figure 1. Note that VDD must be present before enabling the
VDD_OTP pin. The external VDD_OTP supply must be removed before powering down VDD.
Inte rnal O TP progra mming supply ( VDD = 3.3 V)
VLDO_ OTP/CONFIG 6
VDD_OTP
1 μF
Programming the OTP memory is supported using the Hazelburn development platform (CDB-CLOCKING-MB with
daughter cards). The CS2600 device is accommodated in a socket on the CDB2600-DC-SKT daughter card. The
SoundClear Studio (SCS) tool is used to support OTP programming.
The Hazelburn system supports clock inputs and outputs and allows configuration and programming for a variety of
possible use cases. A user guide (CDB-CLOCKING_DS1386DB1.pdf) is available for general information on the
Hazelburn system.
AN0650R1
Figure 1 OTP Programming Supply Connections
Cirrus Logic
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Copyright 2024 Cirrus Logic, Inc. and Cirrus Logic International Semiconductor Ltd.
Ext ernal O TP programming supply (VDD = 1.8 V or 3 .3 V)
(NC)
Pro gramming sup ply
–
V)
AN0650
VLDO_ OTP/CONFIG 6
VDD_OTP
2