IDT92HD99B4X5NDGXYAX IDT, Integrated Device Technology Inc, IDT92HD99B4X5NDGXYAX Datasheet - Page 30

• Manufacturer Part Number: IDT92HD99B4X5NDGXYAX
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT92HD99B4X5NDGXYAX

• Lead Free Status / RoHS Status: Compliant

92HD99
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
IDT CONFIDENTIAL
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
2.23. Digital Core Voltage Regulator
4. Notification if persistent register settings have been unexpectedly reset.
The digital core operates from a 1.8V (10%) supply voltage. Many systems require that the CODEC
use a single 3.3V digital supply, so an integrated regulator is included on die. The regulator uses pin
9, DVDD, as its voltage source. The output of the LDO is connected to pin 1 and the digital core. A
10uF capacitor must be placed on pin 1 for proper load regulation and regulator stability.
The digital core voltage regulator is only dependent on DVDD. DVDDIO may be either 3.3 or 1.5V
and may precede or follow DVDD in sequence. The CODEC digital logic and I/O (unless referenced
to AVDD) will operate in the absence of AVDD. DVDD and AVDD supply sequencing for the applica-
tion of power and the removal of power is neither defined nor guaranteed. It is common for desktop
systems to supply AVDD from the system standby supply and the CODEC will tolerate, indefinitely,
the condition where AVDD is active but DVDD and DVDDIO are inactive.
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V 0.91 10/10
92HD99