CS43L36 datasheet(44/89 Pages) CIRRUS

Part #	CS43L36

Description	Low-Power, High-Performance Audio DAC with Class H Headphone Drivers

PDF	89 Pages

Scroll/Zoom	100%

Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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44 / 89 page

DS1081F3

CS43L36

4.9 Power-Supply Considerations

The following describes the VP monitor behavior with respect to the voltage level:

• If VP drops below 3.0 V, TIP_SENSE performance may be compromised.

• If VP drops below 2.6 V, the VPMON_TRIP status bit is set (see p. 68). An interrupt is triggered if M_VPMON_

TRIP = 0 (see p. 71). This bit must be unmasked/enabled only if VP is above the detection-voltage threshold. It must

be masked/disabled by default to eliminate erroneous interrupts while VP is ramping or is known to be below the

threshold voltage.

• A brown-out condition remains until VP returns to a voltage level above 3.0 V.

• The VP monitor circuit becomes unreliable at VP levels below 2.4 V.

• The VP monitor is intended to detect slow transitioning signals about the 2.6-V threshold. Pulses of short duration

are filtered by the monitor and may not trigger at the 2.6-V threshold, but at a value much lower than expected.

CS43L36 Datasheet(PDF) 44 Page - Cirrus Logic