Digital Audio PWM Processor & Digital Amplifier User's Guide

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Control Interface (J40)
Table 2-7. J40 Pin Description (continued)
PIN NO. NET-NAME AT SCHEMATICS DESCRIPTION
11 GND Ground
12 SCL I
2
C bit clock
13 RESERVED —
14 RESERVED —
15 RESERVED —
16 RESERVED —
17 GND Ground
18 RESERVED —
19 RESERVED —
20 SD Shutdown error reporting for all
channels. Activated if TAS5142 has
high current or high temperature. See
Chapter 3, Protection.
21 SD Shutdown reporting. Activated if one or
more TAS5142 has high current or high
temperature. Pin 21 connected to Pin
20. See Chapter 3, Protection.
22 OTW Temperature warning. Activated if
TAS5142 has reached temperature
warning level.
23 OTW Temperature warning. Activated if one
or more TAS5142 has reached
temperature warning level. Pin 23
connected to Pin 22.
24 HP-SEL Headphone select. Headphone active
when LOW and inactive when HIGH. To
use this pin, <100- Ω resistor must be
placed for R50.
25 GND Ground
26 GND Ground
27 RESERVED —
28 RESERVED —
29 RESERVED —
30 RESERVED —
31 GND Ground
32 GND Ground
33 +5V +5Vdc power supply (output)
34 +5V +5Vdc power supply (output)
System Interfaces12 SLEU071 – June 2006
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