Datasheet

+12V

GND

PC Board

Connectors

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Table 2-4. J19, MIPI Connector Signal

Mapping (continued)

MCU Pin Pin MCU

Signals Number Number Signals

NC 49 50 NC

NC 51 52 NC

NC 53 54 NC

NC 55 56 NC

GND 57 58 GND

NC 59 60 NC

2.2.5 J7, XDS100V2 USB JTAG Interface

The USB connector J7 is used to connect to the host development system that is running the software

development IDE, Code Composer Studio. The signals on this connector are shown in Table 2-5.

Table 2-5. J7, XDS100V2 USB JTAG Interface

Pin Number Signal Name

1 USBVDD

2 D-

3 D+

4 NC

5 USBVSS

Before the board is shipped, the XDS100V2 port1 is configured as JTAG, and port2 is configured as SCI.

The CPLD on the board is also programmed to route the JTAG signals to the MCU.

There is a circuitry to detect the external JTAG emulator. If a device is plugged onto the header J4 and

J19, the DS1 LED will be turned on, and XDS100V2 JTAG is disabled.

2.2.6 P1, +5 V to +12 V Input

Connector P1 is the input power connector. This connector brings in +5 V to +12 V to the HDK board. This

is a 2.5 mm jack. Figure 2-5 shows this connector as viewed from the card edge.

Figure 2-5. +12 V Input Jack

2.2.7 SCI Interface

The internal SCI on the TMS570LS1227 device is connected to the second port of the XDS100V2. The

XDS100V2 USB driver makes the FT2232H second channel appear as a virtual COM port (VCP). This

allows the user to communicate with the USB interface via a standard PC serial emulation port.

Physical Description SPNU568A–September 2012–Revised September 2013

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