Datasheet

1 21 2

LEDs

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2.3 LEDs

The RM42 HDK board has fourteen (14) LEDs. Four of them are under user control. Those LEDs are

controlled and programmed by GIO signals.

LED DS2, DS3, DS4, and DS5 indicate the presence of the power (+1.2 V, +5 V, 3.3 V, and 12 V) on the

board. The LED functions are summarized in Table 2-7 and Table 2-8.

Table 2-7. Demo LEDs

LED Number Location Signals Color

D2 Left Top GIOA6 White

D4 Left Bottom GIOA4 White

D5 Right Top GIOA3 White

D7 Right Bottom GIOA2 White

Table 2-8. Other LEDs as Indicator

Number LED Color

DS6 nERROR Red

D9 XDS100V2 SCI RX Blue

D8 XDS100V2 SCI TX Blue

D10 XDS100V2 PWRENn Blue

D1 JTAG TDI Blue

DS1 External JTAG Emulator Used Blue

DS5 VCC_1V2 Blue

DS3 VCC_5V Blue

DS2 VCC_3V3 Blue

DS4 VCC_12V Blue

2.4 Emulator and Pin Multiplexing Selection DIP Switch

There is one 2-position DIP switch (S5) located at 20-pin CTI JTAG header. By default, all of the channels

are set to the “OFF” position.

Figure 2-7. DIP Switch Settings

Table 2-9. S5 DIP Switch Functions

Switch OFF Position (left) ON Position (right)

S5:1

(1)

TI emulator ARM Emulator

S5:2 SPI EQEP

(1)

S5:1 indicates slide 1 on the S5 switch, S5:2 indicates slide 2 on the S5.

Physical Description SPNU567–September 2012

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