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System Interfaces
4.2
J1 Amplifier Connection to MC016 Controller Module
Table 4. J9/J10 Pin Description Amplifier/Controller Connector
Net-Name at
Pin No.
Description
Schematics
1, 2, 5, 6 ,10, 11, 28
DGND
Low-current ground for modulator/controller
3, 4
PVDD1
PVDD buffered through 24-
Ω
resistor to power the modulator/controller
7
OTW
Overtemperature warning from the amplifier (T > 125°C)
8, 9, 13, 15, 17, 19, 20,
NC
Not connected
21, 22, 23, 25
12
PWM_A
Channel A PWM signal from modulator
14
PWM_B
Channel B PWM signal from modulator
16
PWM_C
Channel C PWM signal from modulator
18
PWM_D
Channel D PWM signal from modulator
24
RESET
Resets the TAS5105
26
FAULT
Power stage fault indicator
27
PVDD
3.3V power supply
4.3
Loudspeaker Connectors (J3 - J6)
CAUTION
Both positive and negative speaker outputs are floating and may not be
connected to ground (e.g., through an oscilloscope).
Table 5. Output Pin Description
Net-Name at Schematics
Description
OUT_A
Speaker positive output
OUT_B
Speaker negative output
OUT_C
Speaker positive output
OUT_D
Speaker negative output
4.4
SPDIF Optical Input Connector
This connector is a standard TOSLINK connector that connects the SPDIF digital audio input to the SPDIF
receiver on the MC016 PCB. Either the SPDIF optical input connector or the SPDIF coaxial input
connector can be used, but not both connectors at the same time. Switch S1 on the MC016
Modulator/Controller Board controls which connector is used.
4.5
SPDIF Coaxial Input Connector
This connector is a standard RCA connector that connects the SPDIF digital audio input to the SPDIF
receiver on the MC016 PCB. Either the SPDIF coaxial input connector or the SPDIF optical input
connector can be used, but not both connectors at the same time. Switch S1 on the MC016
Modulator/Controller Board controls which connector is used.
9
SLLU138 – January 2011
TAS5105EVM for the TAS5105 Digital Amplifier Power Output Stage
© 2011, Texas Instruments Incorporated
