Texas Instruments TMS570LS12x, User Manual

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2.3 LEDs
The TMS570LS12 HDK board has 19 LEDs. Eight of these LEDs (shown in Table 2-9 ) are under user
control. Those LEDs are controlled and programmed by NHET signals.
LEDs DS2, DS3, DS4, and DS5 indicate the presence of the power (+1.2 V, +5 V, 3.3 V, and 12 V) s on
the board. The LED functions are summarized in
Table 2-9 and Table 2-10 .
Table 2-9. Demo LEDs
LED Number Location Signals Color
D3 Left Top NHET1[17] White
D4 Top NHET1[31] White
D5 Right Top NHET1[0] White
D6 Right Bottom NHET1[25] White
D7 Bottom NHET1[18] White
D8 Left bottom NHET1[29] White
LED1 Left NHET1[27] White
LED2 Right NHET1[05] White
Table 2-10. Other LEDs as Indicator
Number LED Color
D1 nERROR Red
D10 XDS100V2 SCI RX Blue
D11 XDS100V2 SCI TX Blue
D12 XDS100V2 PWRENn Blue
D2 JTAG TDI Blue
D9 Ethernet Speed Blue
DS1 ARM JTAG Plugin Blue
DS2 VCC_1V2 Blue
DS3 VCC_5V Blue
DS4 VCC_3V3 Blue
DS5 VCC_12V Blue
2.4 S2 DIP Switch
There is one 4-position DIP switches located on the left-bottom corner at reference designator S2. By
default, all of the switches are set to the “OFF” position and should remain in that position when
completing the steps in this user's guide.
Figure 2-7. DIP Switch Settings
The S2 DIP switch is reserved for user application general purpose. Table 2-11 describes the function of
each channel on S2.
16 Physical Description SPNU568 – September 2012
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