Texas Instruments TMS570LS31 HDK User manual

TMS570LS31 HDK
USER GUIDE

TMS570LS31 HDK User Guide
2
Table of Contents
TMS570LS31 HDK............................................................................................................ 1
USER GUIDE..................................................................................................................... 1
1. Introduction................................................................................................................. 5
1.1 Scope of Document.............................................................................................. 5
1.2 TMS570LS31 HERCULES Development Kit (HDK) Features.......................... 5
1.3 HDK Board Block Diagram................................................................................. 6
1.4 TMS570LS31 HDK Contents.............................................................................. 6
1.5 HDK Specifications.............................................................................................. 7
1.6 Basic Operation.................................................................................................... 7
1.7 Memory Map........................................................................................................ 7
1.8 Power Supply ....................................................................................................... 7
2. Physical Description ................................................................................................... 9
2.1 Board Layout........................................................................................................ 9
2.2 Connectors............................................................................................................ 9
2.2.1 20Pin ARM JTAG Header.......................................................................... 10
2.2.2 Ethernet Interface........................................................................................ 10
2.2.3 CAN Interface............................................................................................. 11
2.2.4 J19, MIPI Connector .................................................................................. 12
2.2.5 J7, XDS100V2 USB JTAG Interface ......................................................... 13
2.2.6 P1, +5V~+12V Input .................................................................................. 14
2.2.7 SCI Interface............................................................................................... 14
2.2.8 Daughter Card Interface.............................................................................. 14
2.3 LEDs................................................................................................................... 19
2.4 DIP Switch ......................................................................................................... 20
2.5 Jumpers............................................................................................................... 20
2.6 S4, Power-On Reset Switch ............................................................................... 21
2.7 S3, System Reset Switch.................................................................................... 21
Appendix A....................................................................................................................... 22
Operation Notices ............................................................................................................. 22
1Support Resources .................................................................................................... 22
Figure 1, TMS570LS31 HDK Board Block Diagram................................................... 6
Figure 2, TMS570LS31 HDK Board, Interfaces Top Side......................................... 9
Figure 3, J2, J3 Screw Terminal Block....................................................................... 11
Figure 4, CAN Bus Termination................................................................................... 12
Figure 5, J19, 60pin MIPI ETM Header...................................................................... 12
Figure 6, +12 Volt Input Jack ....................................................................................... 14
Figure 7, DIP Switch Settings ...................................................................................... 20
Table 1, TMS570LS31 Memory Map............................................................................ 7

TMS570LS31 HDK User Guide
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Table 2, Power Test Points............................................................................................. 8
Table 3, Connectors on HDK Board.............................................................................. 9
Table 4, 20pin ARM JTAG Header.............................................................................. 10
Table 5; J1, Ethernet Interface..................................................................................... 11
Table 6, J19, MIPI Connector Signal Mapping.......................................................... 12
Table 7, J7, XDS100V2 USB JTAG Interface........................................................... 13
Table 10, Expansion Connector P2 (J10, Right, TopView)..................................... 15
Table 11, Expansion Connector P1 (J9, Left, TopView).......................................... 16
Table 12, Expansion Connector P3 (J11, Bottom One, TopView)......................... 17
Table 13, Demo LEDs................................................................................................... 19
Table 14, Other LEDs as Indicator.............................................................................. 19
Table 15, S2 DIP Switch Functions............................................................................. 20
Table 16, Jumpers......................................................................................................... 20

TMS570LS31 HDK User Guide
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About This Manual
This document describes the board level operations of the TMS570LS31
Hercules Development Kit (HDK). The HDK is based on the Texas Instruments
TMS570LS3137 Microcontroller. The TMS570LS31 HDK is a table top card that
allows engineers and software developers to evaluate certain characteristics of
the TMS570LS3137 microcontroller to determine if the microcontroller meets the
designer application requirements. Evaluators can create software to execute on
board or expand the system in a variety of ways.
Notational Conventions
This document uses the following conventions.
The TMS570LS31 HDK will sometimes be referred to as the TMS570 HDK or
HDK.
Program listings, program examples, and interactive displays are shown in a
special italic typeface. Here is a sample program listing.
equations
!rd = !strobe&rw;
Information About Cautions
This book may contain cautions.
This is an example of a caution statement.
A caution statement describes a situation that could potentially damage your
software, or hardware, or other equipment. The information in a caution is
provided for your protection. Please read each caution carefully.
Related Documents, Application Notes and User Guides
Information regarding this device can be found at the following Texas
Instruments website:
http://www.ti.com/tms570

TMS570LS31 HDK User Guide
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1. Introduction
This development kit provides a product-ready hardware and software platform
for evaluating the functionality of the Texas Instruments TMS570LS3137
microcontroller family. Schematics, list of materials, and PCB layout are available
to ease hardware development and reduce time to market.
1.1 Scope of Document
This user guide will list the contents of the development kit, point out the features
of the major components, and provide the instructions necessary to verify your
development kit is in working order. Any additional usage instructions or details
fall outside the scope of this document. Additional resources will be listed at the
end of this user guide.
1.2 TMS570LS31 HERCULES Development Kit (HDK) Features
The HDK comes with a full complement of on board devices that suit a wide
variety of application environments. Key features include:
•A Texas Instruments TMS570LS3137 337-pin BGA microcontroller
•Integrated USB JTAG Emulator (XDS100v2)
•External JTAG Headers (ARM 20 pin and TI Compact 20 pin CTI)
•10/100 Mbps Ethernet interface
•Two CAN Transceivers (SN65HVDA541Q1) and screw terminal blocks
•One ambient light sensor
•One ambient temperature sensor
•Microcontroller’s SCI (UART) accessible through a USB Virtual COM Port
•One 8MB SDRAM
•Eight user programmable white LEDs around the MCU silicon.
•One user programmable pushbutton
•Three expansion connectors for hardware prototyping
•Reset pushbuttons (nPOR and nRST)
•One SD card slot (SPI mode)
•Embedded trace macrocell (ETM) debug interface
•Configurable pin mux options
•5V and 3.3V ADC option jumper
•Current measurement capability for 3.3V IO, 1.2V Core, 1.2V PLL, 3.3V or
5V ADC, and 3.3V VCCP.
•Accepts an external power supply between +5V and +12V

TMS570LS31 HDK User Guide
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1.3 HDK Board Block Diagram
Figure 1, TMS570LS31 HDK Board Block Diagram
TMS570LS3137
180MHz
SDRAM
ENET
PHY
GIO
Button
Light
Sensor
ENET
RJ45
XDS100V2
FTDI
2332
CPLD
USB
EMU
CAN
PHY CAN
PHY
CAN1 CAN2
Temp
Sensor
Ext JTAG
SD
Slot
Pinmux
DIP
ETM
1.2V Core
3.3V I/O
3.3V/5V A/D
PWR
EXP Conn1
EXP Conn3
EXP
Conn2
PIN MUX
PIN MUX
nPOR nRST
SPI/ADC
EMIF/ETM/SPI2
SPI2
JTAG
MII / RMII
CAN/FRAY/LIN/
GIO/HET
c
1.4 TMS570LS31 HDK Contents
The kit contains everything needed to develop and run applications for
TMS570LS3137 microcontrollers including:
Board
TMS570LS31 Card
Cables and Accessories
12 volt power supply with power adapters for US, or Europe
Type A to mini B USB cable for using on board XDS100V2 JTAG
emulator
Ethernet cable
Flashlight for light sensor demo
CCS DVD Containing
Texas Instruments’ Code Composer Studio™ IDE (CCS)
Hercules DVD Containing
Hercules Safety Demos
HALCoGen (Hardware Abstraction Layer Code Generator)
Training Videos
Device Documentation

TMS570LS31 HDK User Guide
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1.5 HDK Specifications
Board supply voltage: 5V–12V Vdc
Board supply current: 130mA typ (fully active, CPU at 180 MHz)
Dimensions: 4.90” x 4.30” x 0.85” (LxWxH)
1.6 Basic Operation
The HDK is designed to work with TI’s Code Composer Studio and other 3rd party
ARM IDEs (Integrated Development Environments). 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.
1.7 Memory Map
The TMS570LS31 family of MCUs have a large byte addressable address space.
The memory map table shows the address space of a TMS570LS3137
microcontroller on the left with specific details of how each region is used 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. CS2/3/4 are used for
synchronous memory for example SRAM, NOR flash, NAND flash etc.
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, TMS570LS31 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
1.8 Power Supply
The HDK board operates from a single +12V external power supply connected to
the main power input (P1), a 2.5 MM, barrel-type plug. Internally, the +12V input
is converted into +1.2V, +3.3V and +5.0V using Texas Instruments swift voltage
regulators and PTH power module. The +1.2V supply is used for the MCU core

TMS570LS31 HDK User Guide
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while the +3.3V supply is used for the MCU's I/O buffers and other components
on the board. The +5.0 volt supply is used for ADC power (2nd 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. The table below shows the voltages for each test point and what the
supply is used for.
Table 2, Power Test Points
Test Point Pair
Voltage
Voltage Use
TP14 and TP15
1.2V
MCU core
TP16 and TP17
3.3V
MCU IO
TP18 and TP19
1.2V
MCU PLL
TP20 and TP21
3.3V
MCU Flash pump
TP22 and TP23
3.3V or 5.0V (J8 to
enable 5V)
MCU MibADC, and
ADREFHI

TMS570LS31 HDK User Guide
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2. Physical Description
This chapter describes the physical layout of the TMS570LS31 HDK board and
its interfaces.
2.1 Board Layout
The TMS570LS31 HDK is a 4.9 x 4.3 inch (125 x 109 mm.) eight (8) layer
printed circuit board which is powered by an external +5V~+12 volt only power
supply. Figure 2 shows the layout of the TMS570LS31 HDK board.
Figure 2, TMS570LS31 HDK Board, Interfaces Top Side
2.2 Connectors
The HDK board has twenty fifteen (15) interfaces to various peripherals. These
interfaces are described in the following sections.
Table 3, Connectors on HDK Board
Connector
Size
Function
J1
RJ45
Ethernet
J2
3, 2,54mm
DCAN1

TMS570LS31 HDK User Guide
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J3
3, 2.54mm
DCAN2
J4
10x2, 2.54mm
ARM 20pin JTAG header
J6
19x2, mictor
RTP
J7
4pin, Mini-B USB
XDS100V2 USB
J9
33x2, 2mm
Exp P1, SPI1, SPI5, ADC
J10
33x2, 2mm
EXP P2, SPI2, EMIF, ECLK
J11
40x2, 2mm
EXP P3, SPI3, GIO, NHET, DCAN,
Flexray, LIN
J12
19x2, mictor
DMM
J15
SD card
J16
4pin, Type B
No Populated
J17
4pin, Type A
No Populated
J19
30x2, MIPI
ETM MIPI Header
P1
2.5mm
+12V In
2.2.1 20Pin ARM JTAG Header
In addition to on board XDS100V2 JTAG. One 20pin ARM JTAG header is added
for using an external emulator. This is the standard interface used by JTAG
emulators to interface to ARM microcontrollers. The pinout for the connector is
shown in the figure.
Table 4, 20pin ARM JTAG Header
Signal Name
Pin#
Pin#
Signal Name
Vref
1
2
VCC
nTRST
3
4
GND
TDI
5
6
GND
TMS
7
8
GND
TCK
9
10
GND
RTCK
11
12
GND
TDO
13
14
GND
nRST
15
16
GND
NC
17
18
GND
NC
19
20
GND
2.2.2 Ethernet Interface
The TMS570LS3137 integrates an MII/RMII ethernet MAC on chip. This interface
is routed to the on board PHY via CBT switches. The board uses a DP83640
PHY. The interface is isolated and brought out to a RJ-45 connector with
integrated magnetics, J1. The pinmux control DIP S2 is used to control the CBT
FET switch for RMII, MII or other functions.

TMS570LS31 HDK User Guide
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The J1 connector is used to provide an 10/100 Mbps Ethernet interface. This is a
standard RJ-45 connector. The cable end pinout for the J1 connector is shown in
the table below.
Table 5; J1, Ethernet Interface
Pin #
Signal
Pin #
Signal
1
D0+
2
D0-
3
D1-
4
D2+
5
D2-
6
D1-
7
D3+
8
D3-
Two LEDs are embedded into the connector to report link status (green LED) and
transmit/receive status of the PHY (yellow LED).
2.2.3 CAN Interface
The TMS570lLS1227 has three CAN interfaces which provide a high speed serial
interface. Two 3 pin screw terminal blocks, J2 and J3, are used to interface to the
CAN bus. The pinouts for this connector are shown in the figure below. H means
CAN High (CAN H), and L means CAN Low (CAN L).
Figure 3, J2, J3 Screw Terminal Block
CAN Bus termination is used to minimize signal reflection on the bus. ISO-11898
requires that the CAN bus have a nominal characteristic line impedance of 120Ω.
Therefore, the typical terminating resistor value for each end of the bus is 120Ω.
We use split termination method to help increase EMC performance. Split
termination is a concept that is growing in popularity because emission reduction
can be achieved very easily. Split termination is a modified standard termination
in which the single 120Ω resistor on each end of the bus is split into two 60Ω
resistors, with a bypass capacitor tied between the resistors and to ground. The
two resistors should match as close as possible.
H
L
GND

TMS570LS31 HDK User Guide
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Figure 4, CAN Bus Termination
2.2.4 J19, MIPI Connector
The following figure and table show the 60 pin MIPI header.
Figure 5, J19, 60pin MIPI ETM Header
Table 6, J19, MIPI Connector Signal Mapping
MCU Signals
Pin#
Pin#
MCU Signals
3.3V
1
2
TMS
TCK
3
4
TDO
TDI
5
6
System reset
RTCK
7
8
nTRST
NC
9
10
NC
NC
11
12
3.3V
ETMTACECLKOUT
13
14
NC

TMS570LS31 HDK User Guide
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To GND thru 0 W
15
16
GND
EMTTRACECTL
17
18
ETMDATA[19]
ETMDATA[0]
19
20
ETMDATA[20]
ETMDATA[1]
21
22
ETMDATA[21]
ETMDATA[2]
23
24
ETMDATA[22]
ETMDATA[3]
25
26
ETMDATA[23]
ETMDATA[4]
27
28
ETMDATA[24]
ETMDATA[5]
29
30
ETMDATA[25]
ETMDATA[6]
31
32
ETMDATA[26]
ETMDATA[7]
33
34
ETMDATA[27]
ETMDATA[8]
35
36
ETMDATA[28]
ETMDATA[9]
37
38
ETMDATA[29]
ETMDATA[10]
39
40
ETMDATA[30]
ETMDATA[11]
41
42
ETMDATA[31]
ETMDATA[12]
43
44
NC
ETMDATA[13]
45
46
NC
ETMDATA[14]
47
48
NC
ETMDATA[15]
49
50
NC
ETMDATA[16]
51
52
NC
ETMDATA[17]
53
54
NC
ETMDATA[18]
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 which
is running the software development IDE (CCS for example). The signals on this
connector are shown in the table below.
Table 7, J7, XDS100V2 USB JTAG Interface
Pin #
Signal Name
1
USBVDD
2
D-

TMS570LS31 HDK User Guide
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3
D+
4
NC
5
USBVSS
Before the board is shipped, the FTDI port1 is configured as JTAG, and port2 is
configured as SCI. The CPLD is also programmed to route FTDI JTAG to MCU
JTAG.
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, +5V~+12V Input
Connector P1 is the input power connector. This connector brings in +12 volts to
the HDK Board. This is a 2.5 mm jack. The figure below shows this connector as
viewed from the card edge.
Figure 6, +12 Volt Input Jack
text
text
P1
PC Board
GND
+12V
2.2.7 SCI Interface
The internal SCI on the TMS570LS3137 device is connected to the 2nd port of the
FTDI chip. The FTDI USB driver makes the FT2232H 2nd 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

TMS570LS31 HDK User Guide
15
expansion connectors are for all major interfaces including asynchronous
memory, peripherals, Flexray, and A/D expansion.
There are three daughter card interfaces, J9, J10, and J11. These connectors
are described in the table below.
Table 8, Expansion Connector P2 (J10, Right, TopView)
Signal Name
Pin#
No.
Pin#
Signal Name
EXP_12V
1
2
GND
EXP_12V
3
4
GND
MibSPI1ENA
G19
5
6
F18
MibSPI1CLK
MibSPI1CS[1]
F3
7
8
R2
MibSPI1CS[0]
MibSPI1CS[3]
J3
9
10
G3
MibSPI1CS[2]
MibSPI1SIMO
F19
11
12
G18
MibSPI1SOMI
GND
13
14
GND
MibSPI5ENA
H18
15
16
H19
MibSPI5CLK
MibSPI5CS[1]
B6
17
18
E19
MibSPI5CS[0]
MibSPI5CS[3]
T12
19
20
W6
MibSPI5CS[2]
MibSPI5SIMO[0]
J19
21
22
MibSPI5SOMI[0]
MibSPI5SIMO[1]
E16
23
24
E17
MibSPI5SOMI[1]
MibSPI5SIMO[2]
H17
25
26
H16
MibSPI5SOMI[2]
MibSPI5SIMO[3]
G17
27
28
G16
MibSPI5SOMI[3]
GND
29
30
GND
AD1IN[1]
V17
31
32
W14
AD1IN[0]
AD1IN[3]
T17
33
34
V18
AD1IN[2]
AD1IN[5]
R17
35
36
U18
AD1IN[4]
AD1IN[7]
V14
37
38
T19
AD1IN[6]
GND
39
40
GND
AD2IN[1]
U13
41
42
V13
AD2IN[0]
AD2IN[3]
U16
43
44
U14
AD2IN[2]
AD2IN[5]
T15
45
46
U15
AD2IN[4]
AD2IN[7]
R16
47
48
R19
AD2IN[6]
AGND
49
50
GND

TMS570LS31 HDK User Guide
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Signal Name
Pin#
No.
Pin#
Signal Name
AD1IN[9]
W17
51
52
P18
AD1IN[8]
AD1IN[11]
U19
53
54
U17
AD1IN[10]
AD1IN[13]
T18
55
56
T16
AD1IN[12]
AD1IN[15]
P19
57
58
R18
AD1IN[14]
GND
59
60
POR_RSTn
ADREFHI
V15
61
62
V16
ADREFLO
AD1EVT
N19
63
64
V10
AD2EVT
EXP_12V
65
66
GND
Table 9, Expansion Connector P1 (J9, Left, TopView)
Signal Name
Pin#
No.
Pin#
Signal Name
EXP_12V
1
2
GND
ECLK
A12
3
4
B14
ERRORn
RST
5
6
M17
EMIF_CS[4]
EMIF_ADDR[21]
C17
7
8
C16
EMIF_ADDR[20]
EMIF_ADDR[19]
C15
9
10
D15
EMIF_ADDR[18]
EMIF_ADDR[17]
C14
11
12
D14
EMIF_ADDR[16]
EMIF_ADDR[15]
C13
13
14
C12
EMIF_ADDR[14]
EMIF_ADDR[13]
C11
15
16
C10
EMIF_ADDR[12]
EMIF_ADDR[11]
C9
17
18
C8
EMIF_ADDR[10]
EMIF_ADDR[9]
C7
19
20
C6
EMIF_ADDR[8]
EMIF_ADDR[7]
C5
21
22
C4
EMIF_ADDR[6]
EMIF_ADDR[5]
D9
23
24
D8
EMIF_ADDR[4]
EMIF_ADDR[3]
D7
25
26
D6
EMIF_ADDR[2]
EMIF_ADDR[1]
D5
27
28
D4
EMIF_ADDR[0]
GND
29
30
GND
EMIF_Wen
D17
31
32
K17
EMIF_CS[3]
EMIF_Oen
D12
33
34
L17
EMIF_CS[2]
EMIF_BA[1]
D16
35
36
D11
EMIF_DQMn[1]
EMIF_BA[0]
D13
37
38
D10
EMIF_DQMn[0]

TMS570LS31 HDK User Guide
17
Signal Name
Pin#
No.
Pin#
Signal Name
GND
39
40
GND
EMIFDATA[1]
L16
41
42
K16
EMIFDATA[0]
EMIFDATA[3]
N16
43
44
M16
EMIFDATA[2]
EMIFDATA[5]
F4
45
46
E4
EMIFDATA[4]
EMIFDATA[7]
K4
47
48
G4
EMIFDATA[6]
EMIFDATA[9]
M4
49
50
L4
EMIFDATA[8]
EMIFDATA[11]
P4
51
52
N4
EMIFDATA[10]
EMIFDATA[13]
T6
53
54
T5
EMIFDATA[12]
EMIFDATA[15]
T8
55
56
T7
EMIFDATA[14]
GND
57
58
GND
SPI2_SOMI
D2
59
60
P3
EMIF_nWAIT
SPI2_SIMO
D1
61
62
D3
SPI2_CS1
SPI2_CS0
N3
63
64
E2
SPI2_CLK
EXP_12V
65
66
GND
Table 10, Expansion Connector P3 (J11, Bottom One, TopView)
Signal Name
Pin#
No.
No.
Pin#
Signal Name
EXP_12V
1
2
GND
EXP_12V
3
4
GND
LINRX
A7
5
6
B7
LINTX
CAN1RX
B10
7
8
A10
CAN1TX
CAN2RX
H1
9
10
H2
CAN2TX
CAN3RX
M19
11
12
M18
CAN3TX
FRAYRX1
A15
13
14
A8
FRAYRX2
FRAYTX1
B15
15
16
B8
FRAYTX2
FRAYTXEN1
B16
17
18
B9
FRAYTXEN2
GIOA[1]
C2
19
20
A5
GIOA[0]
GIOA[3]
E1
21
22
C1
GIOA[2]
GIOA[5]
B5
23
24
A6
GIOA[4]
GIOA[7]
M1
25
26
H3
GIOA[6]

TMS570LS31 HDK User Guide
18
Signal Name
Pin#
No.
No.
Pin#
Signal Name
GIOB[1]
K2
27
28
M2
GIOB[0]
GIOB[3]
W10
29
30
F2
GIOB[2]
GIOB[5]
G2
31
32
G1
GIOB[4]
GIOB[7]
F1
33
34
J2
GIOB[6]
GND
35
36
GND
NHET1[1]
V2
37
38
K18
NHET1[0]
NHET1[3]
U1
39
40
W5
NHET1[2]
NHET1[5]
V6
41
42
B12
NHET1[4]
NHET1[7]
T1
43
44
W3
NHET1[6]
NHET1[9]
V7
45
46
E18
NHET1[8]
NHET1[11]
E3
47
48
D19
NHET1[10]
NHET1[13]
N2
49
50
B4
NHET1[12]
NHET1[15]
N1
51
52
A11
NHET1[14]
NHET1[17]
A13
53
54
A4
NHET1[16]
NHET1[19]
B13
55
56
J1
NHET1[18]
NHET1[21]
H4
57
58
P2
NHET1[20]
NHET1[23]
J4
59
60
B3
NHET1[22]
NHET1[25]
M3
61
62
P1
NHET1[24]
NHET1[27]
A9
63
64
A14
NHET1[26]
NHET1[29]
A3
65
66
K19
NHET1[28]
NHET1[31]
J17
67
68
B11
NHET1[30]
GND
69
70
GND
MibSPI3CS[3]
C3
71
72
B2
MibSPI3CS[2]
MibSPI3SIMO
W8
73
74
V8
MibSPI3SOMI
MibSPI3CS[1]
V5
75
76
V10
MibSPI3CS[0]
MibSPI3ENA
W9
77
78
V9
MibSPI3CLK
EXP_12V
79
80
GND

TMS570LS31 HDK User Guide
19
2.3 LEDs
The TMS570LS31 HDK board has nineteen (19) LEDs. Eight of these LEDs
(Table 13, and Table 14) are under user control. Those LEDs are controlled and
programmed by NHET signals.
LED DS2, DS3, DS4, and DS5 indicate the presence of the power (+1.2V, +5V,
3.3V, and 12V) s on the board. The LED functions are summarized in the tables
below.
Table 11, Demo LEDs
LED#
Location
Signals
Color
D3
Left Top
NHET1[17]
White
D4
Top
NHET1[31]
White
D5
Right Top
NHET1[0]
White
D6
Right Bottom
NHET1[25]
White
D7
Bottom
NHET1[18]
White
D8
Left bottom
NHET1[29]
White
LED1
Left
NHET1[27]
White
LED2
Right
NHET1[05]
White
Table 12, Other LEDs as Indicator
Num
LED
Color
D1
nERROR
RED
D10
XDS100V2 SCI RX
Blue
D11
XDS100V2 SCI TX
Blue
D12
XDS100V2 PWRENn
Blue
D2
JTAG TDI
Blue
D9
Ethernet Speed
Blue
DS1
ARM JTAG Plugin
Blue
DS2
VCC_1V2
Blue
DS3
VCC_5V
Blue
DS4
VCC_3V3
Blue
DCAN2

TMS570LS31 HDK User Guide
20
DS5
VCC_12V
Blue
2.4 DIP Switch
There is one 4-position DIP switch located on the left-bottom corner at reference
designator S2. By default, all of the switch channel are set to the “OFF” position.
Figure 7, DIP Switch Settings
The S2 DIP switch is reserved for user application general purpose. Table 2.1
describes the function of each channel on S2. S2:[3:1] are not used on this board
since TMS570LS31 doesn’t support USB features.
Table 13, S2 DIP Switch Functions
Switch
OFF Position
ON Position
S2:1*
N/A
N/A
S2:2**
N/A
N/A
S2:3**
N/A
N/A
S2:4***
Ethernet Disabled
Ethernet Enabled
*Note: S2:1/2/3 are not used
***Note: To use Ethernet, S2:4 should be enabled and all other have to be
disabled.
2.5 Jumpers
HDK board has two (2) jumpers which are used to enable/disable SDRAM and
select 5V or 3.3V ADC.
Table 14, Jumpers
Jumper #
Off
On
J8
5V ADC
3.3V ADC
J13
SDRAM on
SDRAM Off
1
2
3
4
1 2 3 4