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Basic Operation
HDK Specifications
•
Board supply voltage: 5 V–12 V Vdc
•
Dimensions: 4.90” x 4.30” x 0.85” (LxWxH)
1.5
Basic Operation
The HDK is designed to work with TI’s Code Composer Studio and other third party ARM IDEs. The IDE
communicates with the board through the embedded emulator or an external JTAG emulator. To start,
follow the instructions in the Quick Start Guide to install Hercules-specific software. This process will install
all of the necessary development tools, documentation and drivers.
1.6
Memory Map
The TMS570LC43 family of MCUs have a large byte addressable address space.
Table 1-1
shows the
address space of a TMS570LC4357 microcontroller on the left with specific details of how each region is
used by the HDK on the right. By default, the internal memory sits at the beginning of the address space.
The SDRAM is mapped into CS0 space on the EMIF. CS[4:2] are used for synchronous memory for
example SRAM, NOR Flash, NAND Flash, and so forth.
To use EMIF, the MPU has to be enabled, and the CS regions have to be configured as “device mode” or
“strongly ordered mode” through MPU.
Table 1-1. TMS570LC43 Memory Map
Start Address
End Address
HDK
0x0000 0000
0x002F FFFF
Flash
0x0800 0000
0x0803 FFFF
RAM
0x0840 0000
0x0843 FFFF
RAM-ECC
0x6000 0000
0x63FF FFFF
CS2 Async RAM
0x6400 0000
0x67FF FFFF
CS3 Async RAM
0x6800 0000
0x7BFF FFFF
CS4 Async RAM
0x8000 0000
0x87FF FFFF
CS0 Sync SDRAM
1.7
Power Supply
The HDK board operates from a 12 V external power supply connected to the main power input
(P1), a 2.5 mm, barrel-type plug. Internally, the +12 V input is converted into +1.2 V, +3.3 V and +5.0 V
using Texas Instruments swift voltage regulators and PTH power module. The +1.2 V supply is used for
the MCU core while the +3.3 V supply is used for the MCU's I/O buffers and other module on the board.
The +5.0 V supply is used for ADC power (second option) and USB VBUS.
There are multiple power test points on the HDK board. The three main test point pairs provide a
convenient mechanism to check the HDK’s current for each supply.
Table 1-2
shows the voltages for each
test point and what the supply is used for.
Table 1-2. Power Test Points
Test Point Pair
Voltage
Voltage Use
TP14 and TP15
1.2 V
MCU core
TP16 and TP17
3.3 V
MCU IO and logic
TP18 and TP19
1.2 V
MCU PLL
TP20 and TP21
3.3 V
MCU Flash pump
TP22 and TP23
3.3 V or 5.0 V
MCU MibADC, and ADREFHI
(J8 to enable 5 V)
7
SPNU597 – May 2014
Introduction
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