Freescale Semiconductor 56F8037 User manual

56F8000
16-bit Digital Signal Controllers
freescale.com
56F8037
Evaluation Module User Manual
MC56F8037EVMUM
Rev. 0
09/2006

TABLE OF CONTENTS
Table of Contents, Rev. 0
Freescale Semiconductor i
Preliminary
Preface 1-vii
Chapter 1
Introduction
1.1 56F8037EVM Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 56F8037EVM Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2.1 USB Power Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2.2 External +9.0V DC Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.3 External +3.3V DC Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Chapter 2
Technical Summary
2.1 56F8037. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 USB Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Debug LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.4 Debug Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.5 External Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.6 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.7 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.7.1 USB Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.7.2 External +9V DC Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.7.3 Daughter Card Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.8 Daughter Card Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.9 Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Appendix A
56F8037EVM Schematics
Appendix B
56F8037EVM
Bill of Material

56F8037EVM User Manual, Rev. 0
ii Freescale Semiconductor
Preliminary

LIST OF TABLES
List of Tables, Rev. 0
Freescale Semiconductor iii
Preliminary
2-1 SCI RxD Signal Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2 SCI TxD Signal Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-3 LED Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-4 JTAG Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-5 Power Source Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-6 Daughter Card Connector Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

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Preliminary

LIST OF FIGURES
List of Figures, Rev. 0
Freescale Semiconductor v
Preliminary
1-1 Block Diagram of the 56F8037EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-2 56F8037EVM Cabling for USB Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-3 56F8037EVM Cabling for External +9V Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-4 56F8037EVM Cabling for External +3.3V Power . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2-1 Diagram of the Debug LED Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-2 Schematic Diagram of the User Interrupt Interface. . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

56F8037EVM User Manual, Rev. 0
vi Freescale Semiconductor
Preliminary

Preface, Rev. 0
Freescale Semiconductor vii
Preliminary
Preface
This manual describes the hardware on the 56F8037EVM in detail.
Audience
This document is intended for application developers who are creating software for
devices using the Freescale 56F8037 part or a member of the 56F8000 family that is
compatible with this part.
Organization
This manual is organized into two chapters and two appendices.
•Chapter 1, Introduction, provides an overview of the Evaluation Module and its
features.
•Chapter 2, Technical Summary, describes the 56F8037EVM hardware in detail.
•Appendix A, 56F8037EVM Schematics, contains the schematics of the
56F8037EVM.
•Appendix B, 56F8037EVM Bill of Material, provides a list of the materials used on
the 56F8037EVM.
Suggested Reading
More documentation on the 56F8037EVM and the MC56F8037EVM kit may be found at
URL:
www. freescale.com

56F8037EVM User Manual, Rev. 0
viii Freescale Semiconductor
Preliminary
Notation Conventions
This manual uses the following notational conventions:
Term or Value Symbol Examples Exceptions
Active High
Signals
(Logic One)
No special symbol
attached to the
signal name
A0
CLKO
Active Low
Signals
(Logic Zero)
Noted with an
overbar in text and
in most figures
WE
OE
In schematic drawings,
Active Low Signals may be
noted by a backslash: /WE
Hexadecimal
Values
Begin with a “$”
symbol
$0FF0
$80
Decimal Values No special symbol
attached to the
number
10
34
Binary Values Begin with the letter
“b” attached to the
number
b1010
b0011
Numbers Considered positive
unless specifically
noted as a negative
value
5
-10
Voltage is often shown as
positive: +3.3V
Blue Text Linkable on-line ...refer to Chapter 7, License
Bold Reference sources,
paths, emphasis
...see:
http://www.freescale.com/

Preface, Rev. 0
Freescale Semiconductor ix
Preliminary
Definitions, Acronyms, and Abbreviations
Definitions, acronyms and abbreviations for terms used in this document are defined below for
reference.
56F8037 Digital signal controller with motor control peripherals
A/D Analog-to-Digital; a method of converting Analog signals to Digital values
ADC Analog-to-Digital Converter; a peripheral on the 56F8037 part
D/A Digital-to-Analog; a method of converting Digital values to Analog signals
DAC Digital-to-Analog Converter; a peripheral on the 56F8037 part
EOnCE Enhanced On-Chip Emulation; a debug bus and port which enables a designer
to create a low-cost hardware interface for a professional-quality debug
environment
EVM Evaluation Module; a hardware platform which allows a customer to evaluate
the silicon and develop his application
GPIO General Purpose Input and Output port on Freescale’s family of digital signal
controllers; does not share pin functionality with any other peripheral on the
chip and can only be set as an input, an output, or a level-sensitive interrupt
input
IC Integrated Circuit
JTAG Joint Test Action Group; a bus protocol/interface used for test and debug
LED Light Emitting Diode
LQFP Low-profile Quad Flat Package
OnCETM On-Chip Emulation, a debug bus and port created to allow a means for low-cost
hardware to provide a professional-quality debug environment
PCB Printed Circuit Board
PWM Pulse Width Modulation
SCI Serial Communications Interface; a peripheral on Freescale’s family of digital
signal controllers
SPI Serial Peripheral Interface; a peripheral on Freescale’s family of digital signal
controllers

56F8037EVM User Manual, Rev. 0
xFreescale Semiconductor
Preliminary
References
The following sources were referenced to produce this manual:
[1] DSP56800E Reference Manual, DSP56800ERM, Freescale Semiconductor, Inc.
[2] 56F802X and 56F803X Peripheral Reference Manual, MC56F80XXRM,
Freescale Semiconductor, Inc.
[3] 56F8037 Technical Data, MC56F8037, Freescale Semiconductor, Inc.

Introduction, Rev. 0
Freescale Semiconductor 1-1
Preliminary
Chapter 1
Introduction
The 56F8037EVM is used to demonstrate the abilities of the 56F8037 digital signal controller
and to provide a hardware tool allowing the development of applications.
The 56F8037EVM is an evaluation module board that includes a 56F8037 part, USB interface,
user LEDs, user pushbutton switches and a daughter card connector. The daughter card
connector allows signal monitoring and expandability of user features.
The 56F8037EVM is designed for the following purposes:
• Allowing new users to become familiar with the features of the 56800E architecture. The
tools and examples provided with the 56F8037EVM facilitate evaluation of the feature set
and the benefits of the family.
• Serving as a platform for real-time software development. The tool suite enables the user
to develop and simulate routines, download the software to on-chip memory, run it, and
debug it using a debugger via the JTAG/Enhanced OnCE (EOnCE) port. The breakpoint
features of the EOnCE port enable the user to easily specify complex break conditions and
to execute user-developed software at full speed until the break conditions are satisfied.
The ability to examine and modify all user-accessible registers, memory and peripherals
through the EOnCE port greatly facilitates the task of the developer.
• Serving as a platform for hardware development. The hardware platform enables the user
to connect external hardware peripherals. The on-board peripherals can be disabled,
providing the user with the ability to reassign any and all of the processor's peripherals.
The EOnCE port's unobtrusive design means that all memory on the board and on the
processor is available to the user.
1.1 56F8037EVM Architecture
The 56F8037EVM facilitates the evaluation of various features present in the 56F8037 part. The
56F8037EVM can be used to develop real-time software and hardware products. The
56F8037EVM provides the features necessary for a user to write and debug software,

56F8037EVM User Manual, Rev. 0
1-2 Freescale Semiconductor
Preliminary
demonstrate the functionality of that software and interface with the user's application-specific
device(s). The 56F8037EVM is flexible enough to allow a user to fully exploit the 56F8037's
features to optimize the performance of his product, as shown in Figure 1-1.
56F8037
RESET
JTAG/EOnCE
SPI
SCI
Timer A
PWM
+3.3V & GND
+3.3VA & AGND
Daughter Card
Connector
IRQ Pushbuttons
JTAG
Connector
USB
Type-B
SCI to USB
Bridge
Power Supply
+3.3V &+3.3VA
RESET Pushbutton
Debug LEDs
ADCA
ADCB
Figure 1-1. Block Diagram of the 56F8037EVM
1.2 56F8037EVM Connections
There are several power connection arrangements supported by the 56F8037EVM. Power can be
provided to the 56F8037EVM by using a USB connector, P2, attached to a PC or USB hub.
Power can be provided to the 56F8037EVM by an external +9.0V DC power supply using the
2.1mm power jack, P1, or via the Daughter Card connector, P3. However, the debug interconnect
is always the same using the JTAG connector, J1.
1.2.1 USB Power Connection
An interconnection diagram is shown in Figure 1-2 for connecting the JTAG Debug and USB
between a PC and the 56F8037EVM.

PC-compatible
USB A/B Cable
Computer
J1
P2
Connect cable
to USB port
USB-TAP
56F8037EVM
Connect cable to USB port
USB A/B cable
56F8037EVM Connections
Introduction, Rev. 0
Freescale Semiconductor 1-3
Preliminary
Figure 1-2. 56F8037EVM Cabling for USB Power
Perform the following steps for USB power connection:
1. Connect the USB-TAP’s USB cable to a USB port on the host computer.
2. Connect the other end of the USB-TAP cable to the USB-TAP module. Connect the
ribbon cable from the USB-TAP module to J1 on the 56F8037EVM, shown in Figure 1-2.
This provides the connection which allows the host computer to control the debug
functions on the 56F8037EVM board.
3. Connect the second USB cable to another USB port on the host computer or a USB hub.
4. Connect the other end of the second USB cable to the USB connector, P2, on the
56F8037EVM board, shown in Figure 1-2. The green Power-ON LED, LED7, will
illuminate when power is correctly applied.
1.2.2 External +9.0V DC Power Connection
An interconnection diagram is shown in Figure 1-3 for connecting the PC and a user-supplied
external +9.0V DC power supply to the 56F8037EVM.

PC-compatible
USB A/B Cable
Computer
External
+9V
Power
J1
P1
Connect cable
to USB port
with 2.1mm,
receptacle
connector
USB-TAP
56F8037EVM
56F8037EVM User Manual, Rev. 0
1-4 Freescale Semiconductor
Preliminary
Figure 1-3. 56F8037EVM Cabling for External +9V Power
Perform the following steps for +9.0V DC power connection:
1. Connect the USB-TAP’s USB cable to a USB port on the host computer.
2. Connect the other end of the USB-TAP cable to the USB-TAP module. Connect the
ribbon cable from the USB-TAP module to J1 on the 56F8037EVM, shown in Figure 1-3.
This provides the connection which allows the host computer to control the board.
3. Make sure that the external +9V DC, 450mA power supply is not plugged into any AC
power source.
4. Connect the 2.1mm output power plug from the external power supply into P1 on the
56F8037EVM, shown in Figure 1-3.
5. Apply power to the external power supply. The green Power-ON LED, LED7, will
illuminate when po wer is correctly applied.
1.2.3 External +3.3V DC Power Connection
An interconnection diagram is shown in Figure 1-4 for connecting the PC and a user-supplied
Daughter Card providing +3.3V DC to the 56F8037EVM.

PC-compatible
USB A/B Cable
Computer
J1
P3
Daughter Card
USB-TAP
56F8037EVM
56F8037EVM Connections
Introduction, Rev. 0
Freescale Semiconductor 1-5
Preliminary
Figure 1-4. 56F8037EVM Cabling for External +3.3V Power
Perform the following steps to provide +3.3V DC power from a Daughter Card:
1. Connect the USB-TAP’s USB cable to a USB port on the host computer.
2. Connect the other end of the USB-TAP cable to the USB-TAP module. Connect the
ribbon cable from the USB-TAP module to J1 on the 56F8037EVM, shown in Figure 1-4.
This provides the connection which allows the host computer to control the board.
3. Make sure the power supply on the Daughter Card is turned OFF.
4. Connect the Daughter Card to P3 on the 56F8037EVM, shown in Figure 1-4.
5. Apply power to the Daughter Card. The green Power-ON LED, LED7, will illuminate
when power is correctly applied.

56F8037EVM User Manual, Rev. 0
1-6 Freescale Semiconductor
Preliminary

Technical Summary, Rev. 0
Freescale Semiconductor 2-1
Preliminary
Chapter 2
Technical Summary
The 56F8037EVM is designed as a versatile development card using the 56F8037 processor,
allowing the creation of real-time software and hardware products to support a new generation of
applications in servo and motor control, digital and wireless messaging, digital answering
machines, feature phones, modems, and digital cameras. The power of the 16-bit 56F8037
processor, combined with the on-board USB interface and daughter card connector, makes the
56F8037EVM ideal for developing and implementing many motor control algorithms, as well as
for learning the architecture and instruction set of the 56F8037 processor.
The main features of the 56F8037EVM, with board and schematic reference designators, include:
• 56F8037, a 16-bit +3.3V digital signal controller operating at 60MHz [U1]
• Joint Test Action Group (JTAG) port interface connector, for an external debug Host
Target Interface [J1]
• USB interface, for easy connection to a host processor [U2 and P2]
• Daughter Card connector, to allow the user to connect his own PWM, ADC, DAC, SCI,
SPI or GPIO-compatible peripheral to the digital signal controller [P3]
• On-board power regulation provided from an external +9V DC-supplied power input [P1]
• Light Emitting Diode (LED) power indicator [LED7]
• Six on-board real-time user debugging LEDs [LED1-6]
• Manual RESET pushbutton [S1]
• Manual interrupt #1 pushbutton [S2]
• Manual interrupt #2 pushbutton [S3]

56F8037EVM User Manual, Rev. 0
2-2 Freescale Semiconductor
Preliminary
2.1 56F8037
The 56F8037EVM uses a Freescale 56F8037 part, designated as U1 on the board and in the
schematics. This part will operate at a maximum external bus speed of 60MHz. A full description
of the 56F8037, including functionality and user information, is provided in these documents:
• 56F8037 Technical Data Sheet,(MC56F8037):Electrical and timing specifications, pin
descriptions, device specific peripheral information and package descriptions
•56F802X and 56F803X Peripheral Reference Manual,(MC56F80XXRM): Detailed
description of peripherals of the 56F802x and 56F803x devices
•DSP56800E Reference Manual,(DSP56800ERM): Detailed description of the 56800E
family architecture, 16-bit core processor, and the instruction set
Refer to these documents for detailed information about chip functionality and operation. They
can be found on this URL:
www.freescale.com
2.2 USB Serial Communications
The 56F8037EVM provides an RS-232 to USB bridge interface by the use of an USB bridge part,
Silicon Labs CP2102, designated as U2. Refer to the USB schematic details in Appendix A. The
USB bridge handles all the USB 2.0 protocol interactions and transitions the SCI port’s +3.3V
signal levels to USB-compatible signal levels and connects to the host’s USB port via connector
P2. The SCI ports signals, GPIOB6 and GPIOB7, or GPIOC12 and GPIOC8, can be
disconnected from the USB bridge by pulling the jumpers at JG3, RxD, and JG4, TxD, on the
board. The jumper options available on JG3 and JG4 for the SCI port are shown in Table 2-1 and
Table 2-2.
Table 2-1. SCI RxD Signal Options
JG3
Pin # Signal Description
1GPIO Port B, Bit 6 RXD0
2RxD From CP2102
3GPIO Port C, Bit 12 RXD1