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Functional Description

Table 2-6. J34

PIN PORT FUNCTION PIN LCD PIN NAME LCD FUNCTION

1 N/A 5V 2 N/A 5V

3 N/A 3.3V 4 N/A 3.3V

5 PE7 AIN21 6 XR TOUCH ANALOG

7 PT2 GPIO 8 YD TOUCH IO

9 PT3 GPIO 10 XL TOUCH IO

11 PP7 AIN22 12 YU TOUCH ANALOG

13 PF6 LCDMCLK 14 RST SYSTEM RESET

15 PJ6 LCDAC 16 CS CHIP SELECT

17 PR4 LCDDATA00 18 D1 & D10 LCD DATA

19 PR5 LCDDATA01 20 D2 & D11 LCD DATA

21 PF7 LCDDATA02 22 D3 & D12 LCD DATA

23 PR3 LCDDATA03 24 D4 & D13 LCD DATA

25 PR6 LCDDATA04 26 D5 & D14 LCD DATA

27 PR7 LCDDATA05 28 D6 & D15 LCD DATA

29 PS4 LCDDATA06 30 D7 & D16 LCD DATA

31 PS5 LCDDATA07 32 D8 & D17 LCD DATA

33 PR1 LCDFP 34 DC PARALLEL INTERFACE

35 PR0 LCDCP 36 RD READ SIGNAL

37 PR2 LCDLP 38 WR WRITE SIGNAL

39 N/A GND 40 N/A GND

2.1.13 Ethernet

The DK-TM4C129X supports 10/100 Mbps Ethernet through J32. Each DK has been assigned a unique

MAC address that is stored in USER_REG0 and USER_REG1. The value of the MAC address can be

viewed on the Configuration display in the quickstart weather display example. J32 is driven from the

internal PHY of the TM4C129XNCZAD and the PHY controls three LED that indicate Link, Activity and

Speed. The pins used for the Ethernet LEDs can be used for other functions, but the shunts on jumper

J33 must be removed to enable alternative uses. Refer to the following table for pins:

Pin Function LED Color Jumper

PK4 EN0LED0 (Link) RED J33, Pins 1 and 2

PK6 EN0LED1 (Activity) GREEN J33, Pins 3 and 4

PF1 EN0LED2 (Speed) AMBER J33, Pins 5 and 6

RBIAS RBIAS -- NO

EN0RXIN EN0RXIN -- NO

EN0RXIP EN0RXIP -- NO

EN0TXON EN0TXON -- NO

EN0TXOP EN0TXOP -- NO

Note: The pin controlling the Speed LED can be used to control the backlight for the LCD, refer to the

LCD section for information.

2.1.14 Hibernation

The DK-TM4C129X provides a 32.768-kHz crystal (Y3) as a clock source for the TM4C129X Hibernation

module. The board supports hibernation in VDD3ON mode. To measure the current draw during this

mode, see Section 2.1.5.

The sleep mode of the 3.3V regulator can be used by moving the 2.2-kΩ resistor from R2 to R16, which

enables the low power mode of the switcher (U7) when TM4C129XNCZAD (U1) goes into hibernation.

SPMU360–October 2013 Hardware Description

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