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2.3 Control Interface (J40)
Control Interface (J40)
This interface connects the TAS5504-5142V4EVM board to a TI input-USB board.
Table 2-4. J40 Pin Description
PIN NET NAME
DESCRIPTION
NO. AT SCHEMATICS
1 GND Ground
2 RESERVED
3 GND Ground
System reset (bidirectional). Activate MUTE before RESET for quiet
4 RESET
reset
Backend error (or soft reset) provides reduced click and pop reset,
5 BKND-ERR
without resetting I
2
C volume register settings.
Ramp volume from any setting to noiseless soft mute. Mute also can
6 MUTE
be activated by I
2
C.
Power down. TAS5504A goes to the power-down state when
7 PDN
activated.
8 RESERVED
9 RESERVED
10 SDA I
2
C bit clock
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
Shutdown error reporting for all channels. Activated if TAS5142 has
20 SD
high current or high temperature. See Chapter 3: Protection.
21 RESERVED
Temperature warning. Activated if TAS5142 has reached
22 OTW
temperature warning level.
23 RESERVED
24 RESERVED
25 GND Ground
26 GND Ground
27 RESERVED
28 RESERVED
29 RESERVED
30 RESERVED
31 GND Ground
32 GND Ground
33 +5 V +5Vdc power supply (output)
34 +5 V +5Vdc power supply (output)
System Interfaces14 SLEU075 – June 2006 – Revised June 2006
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