Texas Instruments Hercules RM57L, Руководство пользователя

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+12V
GND
PC Board
P1
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Connectors
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 2-7 .
Table 2-7. 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 2-6 shows this connector as viewed from the card edge.
Figure 2-6. +12 V Input Jack
2.2.7 SCI Interface
The internal SCI on the RM57L843 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.
2.2.8 Daughter Card Interface
The HDK provides expansion connectors that can be used to accept plug-in daughter cards. The daughter
card allows users to build on their EVM platform to extend its capabilities and provide customer and
application specific I/O. The expansion connectors are for all major interfaces including asynchronous
memory, peripherals, and A/D expansion.
15 SPNU598 – May 2014 Physical Description
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