Texas Instruments Delfino TMS320F28377D controlCARD Manual técnico

Delfino TMS320F28377D controlCARD R1.1

Information Guide

Version 1.5 –May 2014 C2000 Systems and Applications Team

Fig 1: TMDSDOCK28377D Experimenter’s Kit

1 Introduction

The Delfino F28377D controlCARD (TMDSCNCD28377D) from Texas Instruments (TI) provides

a great way to learn and experiment with the F2837x device family within TI’s C2000 family of

microcontrollers (MCUs). This 180-pin controlCARD is intended to provide a well-filtered robust

design which is capable of working in most environments. This document goes over the hardware

details of the F28377D controlCARD and explains the functions, locations of jumpers, and

connectors present on the board.

Each controlCARD comes with a “Hardware Developer’s Kit”, a full set of files necessary to

evaluate/develop with a C2000 device. These files include:

Schematics –Designed in Mentor PADS Logic

Bill of Materials (BOM)

Layout PCB files –Designed in Mentor Layout

Gerber files

NOTE: this kit is designed to explore the functionality of the F2837x microcontroller. Even though

the controlCARD can be treated as a good reference design, it is not intended to be a complete

customer design. Full compliance to safety, EMI/EMC and other regulations are left to the

designer of the final customer’s system.

2 Errata

Current revision of controlCARD as of 9-May-2014: PCB R1.1, ASSY rev A (R1.1a)

2.1Warnings/Notes/Errata –

Notes on all controlCARDs:

1. The F28377D controlCARD supports USB host/device connectivity. However, the micro-

USB port, J8, is not isolated from the board ground. Care should be taken when this

controlCARD is being used in a high power application and this USB port is also being

used. Note that external USB isolation buffers may be required for these types of

applications.

2. The F28377D Experimenter’s Kit ships with a USB cable and is designed to be powered

via USB. However, in extreme cases the board/controlCARD may require more power

than the 5V @ 500mA a computer’s USB port can provide (<0.01% of use cases). This

is especially true when additional circuitry has been added to the Docking Station.

In such cases, it is recommended to use an external 5V power supply (2.5mm inner

diameter x 5.5mm outer diameter) and plug it into J1. A compatible supply could be the:

Phihong PSAC05R-050(P)-R-C2 + Phihong RPBAG

Warnings about R1.0a revision controlCARDs:

3. Among many other changes made, the pinout of the R1.1 F28377D controlCARD is

different from the pinout of the pre-release R1.0a controlCARDs. Please refer to the kit

documentation and schematics when porting code.

Warnings about R1.1 and earlier controlCARDs:

4. The F28377D MCU is not 5V tolerant. Because of this some additional protection is

needed between the USB port J8 and the MCU. In particular, resistor R72 should

change from 0R0 to 100K and resistor R74 should change from 0R0 to 10K. This will

effectively limit the voltage/current received by the MCU pin. This issue was fixed in

R1.1a and later revision controlCARDs.

5. If used, the crystal X1 should be acceptable in most applications. However, it may fail

under some worst case conditions. To guarantee proper operation, please see the

F28377x Silicon Errata guide. This issue was fixed in R1.1a and later revision

controlCARDs.

6. Several name changes were made to pins on the device and are now reflected in R1.1a

controlCARD documentation. No functionality was affected.

3 Getting Familiar with the controlCARD

3.1 F28377D controlCARD Features

Delfino F28377D Microcontroller –High performance C2000 microcontroller is located

on the controlCARD.

180pin HSEC8 Edge Card Interface –Allows for compatibility with all of C2000’s 180pin

controlCARD based application kits and controlCARDs. Compatibility with 100pin

controlCARDs can be accomplished using the TMDSADAP180TO100 adapter card (sold

separately).

Built-in Isolated JTAG Emulation –An xds100v2 emulator provides a convenient

interface to Code Composer Studio without additional hardware. Flipping a switch

allows an external JTAG emulator to be used.

Connectivity –The controlCARD contains connectors that allow the user to experiment

with USB, a microSD card, and isolated UART/SCI with the F2837x MCU.

Key Signal Breakout –Most GPIO, ADC and other key signals routed to hard gold

connector fingers.

Robust Power Supply Filtering –Single 5V input supply powers an on-CARD 3.3V

LDO. All MCU inputs are then decoupled using LC filters near the device.

ADC Clamping –ADC inputs are clamped by protection diodes.

Anti-Aliasing Filters –Noise filters (small RC filters) can be easily added on several

ADC input pins.

3.2 Assumed Operating Conditions

This kit is assumed to run at standard room conditions. The EVM should run at approximately

Standard Ambient Temperature and Pressure (SATP) with moderate-to-low humidity.

3.3 Using the controlCARD

In order for the controlCARD to work, the controlCARD’s MCU must be powered. This is most

often done by inputting 5V through the HSEC connector via an accompanying baseboard. For

example, if using a Docking Station baseboard, 5VDC should be input into the Docking Station’s

J1 or J17 and then SW1 will need to be toggled to the appropriate position.

Optionally, the MCU could also be powered via the micro-USB connector on the controlCARD.

Based on the way that the controlCARD will be used, additional hardware settings will be

necessary. See the table below:

Debug using CCS

and the on-card

xds100v2 emulator

Debug using CCS and

an external emulator

via the baseboard

Standalone

(Boot from FLASH or

other boot mode)

A:SW1

(controlCARD)

Position 1: ON (up)

Position 1: OFF (down)

A:J1

(controlCARD)

Connect a mini USB

cable between A:J1

and your computer.

In CCS, use this target

configuration:

TMS320F28377D

device with an

xds100v2 emulator.

---

Baseboard’s

JTAG connector

(J2 on the

Docking Station

baseboard)

---

Connect an external

emulator.

---

Code Composer Studio (CCS) is an Integrated Development Environment (IDE) used to debug

and develop software for the C2000 series of MCUs. It can be downloaded from the following link:

http://processors.wiki.ti.com/index.php/Download_CCS

For users new to C2000’s F28x7x series of devices and CCS, TI’s Technical Training

Organization provides several workshops (online and in-person) that may be helpful:

http://processors.wiki.ti.com/index.php/C2000_32-bit_Real-Time_MCU_Training

http://processors.wiki.ti.com/index.php/Hands-On_Training_for_TI_Embedded_Processors

The following PDF documents are provided to describe where each of the F2837x MCU’s pins

will appear on the controlCARD connector/Docking Station:

TMDSCNCD28377D_180cCARD_pinout_R1_1 –tells where each MCU pin will go on the HSEC

controlCARD connector or the 120/180-pin controlCARD Docking Station.

TMDSCNCD28377D_100DIMmap_R1_1 –tells where each MCU pin will go to on the DIM100

controlCARD connector or the DIM100 Docking Station. This assumes that the

TMDSADAP180TO100 adapter card is used.

More information on the controlCARD/Docking Station can be found at the following locations:

\controlSUITE\development_kits\~controlCARDs\TMDSCNCD28377D_vX.X\

\controlSUITE\development_kits\~ExperimentersKits\120or180pin_HSEC_DockingStn-

HWdevPkg_v1_0\

3.4Experimentation Software

All key examples for the F28377D MCU can be found within controlSUITE at:

\controlSUITE\device_support\f2837xD\

This example software package includes many projects which allow the user to experiment with

the ADC, PWM, and other C2000 peripherals.

4 Special Notes on Connectivity

4.1 xds100v2 Emulator and SCI/UART Connectivity

The F28377D controlCARD provides emulation and USB-to-UART adapter functionality on the

controlCARD. This allows for a convenient method to debug and demo the F2837x MCU.

Note that the FTDI chip, its support circuitry, and associated isolation components are placed in

Macro A, the left section of the controlCARD. Each of these components contains an additional A

within the component reference designator (ie A:R2 for resistor 2 in Macro A).

Each F28377D controlCARD’s xds100v2 is programmed with a fixed serial number. If a debug

session needs to involve 2 or more F28377D controlCARD, each controlCARDs will need have a

unique serial number and some will need to be reprogrammed. See:

http://processors.wiki.ti.com/index.php/XDS100#Q:_Can_I_change_the_serial_number_on_my_X

DS100v2.3F

The configuration of the switches on A:SW1 determine whether the on-board emulator is active,

whether an external emulator can be used, or whether the device will boot from

FLASH/peripherals. See Table 1.

Fig2: xds100v2 Emulation circuitry and isolation circuitry is denoted by A:

5 Hardware References

On the following pages, Table 1 shows the various connections available on the board. Fig 3,

below, illustrates the location of many of these components on the board:

Fig3: Key components on the controlCARD

U1 - C2000 Delfino

F28377D

Microcontroller

A:SW1 –Isolated

Emulation and UART

communication Enable

Switch

J8 –USB host/device

connector

U5 - uSD card

connector slot

A:J1 –USB

emulation/UART

connector

SW2 –External

VREFHI Disable

Switches for ADC

SW1 –Boot Mode

Switch

J2-J7 –USB PHY

Connection

Enable Jumpers

SW3 –ADC VREFHI

Control Switch for

ADC A & B

SW4 –ADC VREFHI

Control Switch for

ADC C & D

Connectors

A:J1

Emulation/UART connector - USB mini A connector used to provide

xds100v2 emulation and USB-to-UART(SCI) communication through

FTDI logic. A:SW1 determines which connections are enabled to the

MCU.

SD Micro card slot –connects to MCU via SPI

USB connector –USB micro AB connector supports USB 2.0 host/device

Jumpers

J2-J7

USB PHY connection enable/disable jumpers –

All jumpers up –The MCU will be connected to the USB PHY on

the controlCARD via GPIOs 42, 43, 46, 47, 120, and 121.

All jumpers down –The MCU will not connect to the USB PHY

and all signals will instead go through the 180pin controlCARD

connector.

LEDs

LD1

Turns on when the controlCARD is powered ON (green)

LD2

Controlled by GPIO-31 with negative logic (red)

LD3

Controlled by GPIO-34 with negative logic (red)

A:D2

Turns on when ISO JTAG logic is powered on (green)

A:D3

JTAG/UART RX toggle indicator (blue)

A:D4

JTAG/UART TX toggle indicator (blue)

Resistors and Capacitors

R42, R43

Alternate Reference Configuration Resistors:

These resistors allow the user to choose whether the alternate reference

for the ADCs will be given by:

If R42 is populated & R43 is unpopulated -

A precision 3.0V reference

If R42 is unpopulated & R43 is populated -

The reference will be given by pin 45 of the HSEC controlCARD

connector. This will presumably allow the baseboard to provide

the desired voltage reference.

R30-R41, R44-R55

and

C19-C42

Optional RC input filter for all ADC inputs

Switches (default position in BOLD)

SW1

Boot Mode Switch:

Controls the Boot Options of the F2837x device. See the device

datasheet for more information. (0 is down, 1 is up)

Mode #

Switch

Position 1

(GPIO-72)

Switch

Position 2

(GPIO-84)

Boot from

Parallel I/O

Boot from SCI

Wait Boot Mode

Get Mode (Flash by default)

SW2

External VREFHI Disable Switches for ADC:

This switch determines which ADC voltage reference (VREFHI) inputs will

be connected to external references.

Each Switch (leftmost switch is for ADC-A, rightmost is for ADC-D, etc):

In the down position, the external reference to the ADC will be

disabled. This configuration should not be used.

In the up position, the respective ADC will be configured to use

an external voltage reference chosen by SW3 or SW4.

SW3

ADC VREFHI Control Switch for ADC modules A & B:

Switch 1 (lower switch) –VREFHI Control Switch for ADC module A:

In the left position –If ADC-A is configured to use an external

reference via SW2, the ADC will be referenced to the alternate

reference chosen by R42/R43 (see above).

In the right position –If ADC-A is configured to use an external

reference via SW2, the ADC will be referenced to a precise 3.3V

reference located on the controlCARD.

Switch 2 (upper switch) –VREFHI Control Switch for ADC module B:

In the left position –If ADC-B is configured to use an external

reference via SW2, the ADC will be referenced to the alternate

reference chosen by R42/R43 (see above).

In the right position –If ADC-B is configured to use an external

reference via SW2, the ADC will be referenced to a precise 3.3V

reference located on the controlCARD.

SW4

ADC VREFHI Control Switch for ADC modules C & D:

Switch 1 (lower switch) –VREFHI Control Switch for ADC module C:

In the left position –If ADC-C is configured to use an external

reference via SW2, the ADC will be referenced to the alternate

reference chosen by R42/R43 (see above).

In the right position –If ADC-C is configured to use an external

reference via SW2, the ADC will be referenced to a precise 3.3V

reference located on the controlCARD.

Switch 2 (upper switch) –VREFHI Control Switch for ADC module D:

In the left position –If ADC-D is configured to use an external

reference via SW2, the ADC will be referenced to the alternate

reference chosen by R42/R43 (see above).

In the right position –If ADC-D is configured to use an external

reference via SW2, the ADC will be referenced to a precise 3.3V

reference located on the controlCARD.

A:SW1

Isolated emulation & UART communication enables:

Switch Position 1 –JTAG Enable:

ON –All signals between the xds100v2 emulation logic and the

MCU will be connected. This setting is valid when the MCU is

being debugged or programmed via the on-card xds100v2

emulator.

OFF –The xds100v2 emulation logic will NOT be connected to

the MCU. This setting is valid when the device will boot from

FLASH, boot from a peripheral directly, or when an external

JTAG emulator will be used.

Switch Position 2 –ISO UART communication enable:

ON –The C2000 MCU’s GPIO-28 (and pin76 of the 180pin

controlCARD connector) will be coupled to the FTDI’s USB-to-

Serial adapter. This allows UART communication to a computer

via the FTDI chip. However, in this position, GPIO-28 will be

forced high by the FTDI chip. Functionality of pin76 of the

connector will be limited.

OFF –The C2000 MCU will NOT be connected to the FTDI USB-

to-Serial adapter. Pin76 of the 180pin controlCARD connector

will be directly connected to GPIO-28.

Table 1: Hardware References

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