Datasheet

0.9 * DVDD
0.1 * DVDD
2.0 V
1.2 V
XSMT
t
f
Digital Attenuation Followed by Analog Mute
Analog Mute
System
VDD
XSMT
7.25kW
2.75kW
12V
supply
PCM5100A , PCM5101A , PCM5102A
PCM5100A-Q1 , PCM5101A-Q1 , PCM5102A-Q1
www.ti.com SLAS859C –MAY 2012–REVISED MAY 2015
External Power Sense Undervoltage Protection Mode (continued)
Figure 39. XSMT in External UVP Mode
Figure 40. XSMT Timing for Undervoltage Protection
The trigger voltage values for the soft mute and hard mute are shown in Table 13. The range of values will vary
from device to device, but typical thresholds are shown. XSMT should be set up to nominally be 3.3 V along with
DVDD, but derived from a higher system power supply rail.
Table 13. Distribution of Voltage Thresholds
MIN TYP MAX
Soft Mute Threshold
2.0 V 2.2 V 0.9×DVDD
Voltage
Hard Mute Threshold
0.1×DVDD 0.9 V 1.2 V
Voltage
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