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2.1.2
Power
2.2
Description of Outputs
2.2.1
Speaker Connections
2.3
Controls
2.3.1
Standby
2.4
Indicator Description
EVM Description
The I
2
C connections are made through a 6-pin DIN connector. The provided cable and adapter PCB
connect the EVM to the host PCB. The adapter PCB is an I
2
C-to-USB converter, which is a HID device
and is automatically recognized by the PC when connected. Therefore, no drivers are needed.
The EVM requires one dc power connection. The connection is made through a 10-pin supplied
connector. The black wire is ground and the red wire is connected to PVDD which can be 8 to 21.5 Vdc.
The connector is Samtec part number IPBD-10-S.
The four speaker connections are located at the one side of the box. The supplied 10-pin connector with
twisted red and white wires should be terminated to a speaker load or resistive load. The red wire
corresponds to the plus {+) output and the white wire corresponds to the minus (–) output.
Figure 3. Wiring Harness for Power and Speaker Connections
Do not connect any of these outputs to ground. The TAS5414 and TAS5424 have full bridged outputs;
connecting to ground triggers a fault.
The outputs can be paralleled by connecting the plus {+) of one channel to the plus {+) of the other
channel. The minus (–) connection of one channel and the minus (–) of the other channel must be
connected also. When paralleling channels, the input signals must be the same and the gain must be set
the same. The gain is set through I
2
C.
The Standby switch is located next to the 6-pin DIN I
2
C input connector. The Standby ON position can be
determined by the toggle being downwards. In this position, it forces the TAS5414 and TAS5424 into the
standby mode. This is the same as a Power On Reset or POR. This shuts down the device and the I
2
C is
defeated(??).
When the switch is moved to the Standby OFF position, the TAS5414 and TAS5424 are put into their
default power-up mode. The I
2
C registers are set to their defaults. The amplifier output is in Hi-Z mode.
Four LED indicators are located on the chassis next to the Standby switch. One power indicator is located
on the PCB; it is for the 3.3-Vdc supply. The 3.3-V supply is needed for the LEDs and the Standby circuit.
The other four LEDs indicate the four non-I
2
C output pins, FAULT, MUTE, CLIP_OTW, and STANDBY.
Fault and CLIP_OTW signals are also routed to the 6-pin DIN for the GUI. In normal play mode, these four
LEDs should not be illuminated.
SLOU202 – June 2007
TAS5414 and TAS5424 Evaluation Module
7