Cypress CY3684 User manual

CY3674/CY3684
EZ-USB®Development Kit User Guide
Doc. # 001-66390 Rev. *D
Cypress Semiconductor
198 Champion Court
San Jose, CA 95134-1709
Phone (USA): 800.858.1810
Phone (Intnl): 408.943.2600
www.cypress.com

2 EZ-USB Development Kit User Guide, Doc. # 001-66390 Rev. *D
Copyrights
Copyrights
© Cypress Semiconductor Corporation, 2011-2013. The information contained herein is subject to change without notice.
Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a
Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted
nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an
express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components
in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user.
The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such
use and in doing so indemnifies Cypress against all charges.
Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by
and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty
provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create
derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom soft-
ware and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as speci-
fied in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source
Code except as specified above is prohibited without the express written permission of Cypress.
Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATE-
RIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described
herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein.
Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure
may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support sys-
tems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all
charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
All trademarks or registered trademarks referenced herein are property of the respective corporations.

EZ-USB Development Kit User Guide, Doc. # 001-66390 Rev. *D 3
Contents
1. Introduction 7
1.1 Introduction..................................................................................................................7
1.2 Kit Contents.................................................................................................................7
1.2.1 Hardware..........................................................................................................7
1.2.2 Software on CD-ROM......................................................................................7
1.2.3 Required Tools Not Included............................................................................8
1.2.4 Other Suggested Tools.....................................................................................8
1.3 Document Revision History ........................................................................................8
1.4 Documentation Conventions .......................................................................................8
2. Getting Started 9
2.1 Kit Installation .............................................................................................................9
2.2 Install Hardware.........................................................................................................17
3. Advanced Development Board 19
3.1 Introduction................................................................................................................19
3.2 Schematic Summary..................................................................................................19
3.3 Jumpers.....................................................................................................................20
3.4 EEPROM Select and Enable Switches SW1 and SW2.............................................20
3.5 Interface Connectors .................................................................................................22
3.6 ATA Connector P8.....................................................................................................25
3.7 U2 - 22v10 Gate Array Logic (GAL)...........................................................................25
3.8 Memory Maps............................................................................................................26
3.9 I2C Expanders...........................................................................................................27
3.10 Indicators – Power and Breakpoint............................................................................27
3.11 General-Purpose Indicators.......................................................................................28
4. Development Kit Contents 29
4.1 Bin..............................................................................................................................29
4.2 Documentation...........................................................................................................30
4.3 Drivers .......................................................................................................................30
4.4 Firmware....................................................................................................................31
4.5 GPIF_Designer..........................................................................................................32
4.6 Hardware ...................................................................................................................32
4.7 SuiteUSB ...................................................................................................................32
4.8 Target ........................................................................................................................33
4.9 Utilities .......................................................................................................................33
4.10 uV2_4k.......................................................................................................................33
5. EZ-USB Firmware Frameworks 35
5.1 Frameworks Overview...............................................................................................35
5.2 Building FrameWorks ................................................................................................37

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5.3 Function Hooks..........................................................................................................38
5.3.1 Task Dispatcher Functions.............................................................................38
5.3.1.1 TD_Init()...........................................................................................38
5.3.1.2 TD_Poll() .........................................................................................38
5.3.1.3 TD_Suspend() .................................................................................38
5.3.1.4 TD_Resume()..................................................................................38
5.3.2 Device Request Functions.............................................................................38
5.3.2.1 DR_GetDescriptor().........................................................................38
5.3.2.2 DR_GetInterface() ...........................................................................39
5.3.2.3 DR_SetInterface()............................................................................39
5.3.2.4 DR_GetConfiguration()....................................................................39
5.3.2.5 DR_SetConfiguration() ....................................................................39
5.3.2.6 DR_GetStatus()...............................................................................39
5.3.2.7 DR_ClearFeature()..........................................................................39
5.3.2.8 DR_SetFeature() .............................................................................39
5.3.2.9 DR_VendorCmnd()..........................................................................40
5.3.3 ISR Functions ................................................................................................40
5.3.3.1 ISR_Sudav()....................................................................................40
5.3.3.2 ISR_Sof().........................................................................................40
5.3.3.3 ISR_Ures().......................................................................................40
5.3.3.4 ISR_Susp()......................................................................................40
5.3.3.5 ISR_Highspeed().............................................................................40
5.4 EZ-USB Library .........................................................................................................41
5.4.1 Building the Library........................................................................................41
5.4.2 Library Functions ...........................................................................................41
5.4.2.1 EZUSB_Delay()...............................................................................41
5.4.2.2 EZUSB_Discon() .............................................................................41
5.4.2.3 EZUSB_GetStringDscr()..................................................................41
5.4.2.4 EZUSB_Susp()................................................................................42
5.4.2.5 EZUSB_Resume()...........................................................................42
5.4.2.6 I2C Routines....................................................................................42
6. Cypress USB Drivers for EZ-USB Kits 43
6.1 Cypress USB Signed Driver Package for EZ-USB Devices......................................43
6.2 Drivers for Firmware Examples and Default EZ-USB Configuration.........................44
6.2.1 Binding Cypress USB Driver to EZ-USB Development Board.......................45
6.3 Drivers for Firmware and Keil Monitor Automatic Download using Script Files.........47
6.3.1 How to Generate and Play Script Files (.spt).................................................47
6.3.1.1 Script File Generation using the Cyscript Tool ................................47
6.3.1.2 Script File Generation and Play using CyConsole...........................48
6.3.1.3 Script Generation and Play using CyControlCenter ........................49
6.3.2 Firmware Download using CyLoad Driver Package ......................................49
6.3.2.1 How to Test CyLoad Driver Package ..............................................52
6.3.3 Keil Debug Monitor Download using Script and CyMonfx1_fx2lp Driver Pack-
age53
6.4 SuiteUSB Driver Packages........................................................................................53
7. USB PC Host Utilities and SuiteUSB Applications 55
7.1 USB Applications in EZ-USB Development Kit ........................................................55
7.2 SuiteUSB Applications...............................................................................................55
7.2.1 Cyconsole Utility ............................................................................................56
7.2.2 CyControlCenter Utility ..................................................................................59

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7.2.3 Streamer Utility...............................................................................................60
7.2.4 Cydesc Utility .................................................................................................62
7.2.5 FxEEPROM Utility..........................................................................................63
8. EZ-USB Development Kit Firmware Examples 65
8.1 Method to Verify the Firmware Example Functionality ..............................................66
8.2 hid_kb Firmware Example .........................................................................................66
8.2.1 Building Firmware Example Code for EZ-USB Internal RAM and External EE-
PROM.67
8.2.2 Method to Download Firmware Image to EZ-USB Internal RAM Memory.....69
8.2.3 Method to Download Firmware Image to External I2C EEPROM..................69
8.2.4 Binding Cypress USB Driver for the Downloaded Firmware Image...............70
8.2.5 Testing the hid_kb Firmware Example Functionality......................................70
8.3 IBN Firmware Example..............................................................................................71
8.3.1 Description.....................................................................................................71
8.3.2 Building Firmware Example Code for EZ-USB RAM and EEPROM..............73
8.3.3 Method to Download Firmware Image to EZ-USB Internal RAM and External
EEPROM73
8.3.4 Binding Cypress USB Driver for the Downloaded Firmware Image...............73
8.3.5 Testing the IBN Firmware Functionality..........................................................73
8.4 Pingnak Firmware Example.......................................................................................74
8.4.1 Description.....................................................................................................74
8.4.2 Building Firmware Example Code for EZ-USB RAM and EEPROM..............76
8.4.3 Method to Download Firmware Image to EZ-USB Internal RAM and External
EEPROM76
8.4.4 Binding Cypress USB Driver for the Downloaded Firmware Image...............76
8.4.5 Testing the pingnak Firmware Functionality...................................................76
8.5 Bulkloop Example......................................................................................................77
8.5.1 Description.....................................................................................................77
8.5.2 Building Bulkloop Firmware Example Code for EZ-USB RAM and EEPROM...
79
8.5.3 Method to Download Bulkloop Firmware Image to Internal RAM or EEPROM..
79
8.5.4 Binding Cypress USB Driver for the Downloaded Firmware Image...............80
8.5.5 Testing the Bulkloop Firmware Functionality..................................................80
8.5.5.1 Test using Cyconsole PC Application..............................................80
8.5.5.2 Test using Cybulk Application..........................................................81
8.5.5.3 Testing Bulkloop Example using Bulkloop C# .NET Application......82
8.6 Bulksrc Firmware Example........................................................................................83
8.6.1 Description.....................................................................................................83
8.6.2 Building Bulksrc Firmware Example Code for EZ-USB RAM Memory and EE-
PROM85
8.6.3 Method to Download Bulksrc Firmware Image to EZ-USB Internal RAM and
EEPROM85
8.6.4 Binding Cypress USB Driver for the Downloaded Firmware Image...............85
8.6.5 Testing the Bulksrc Firmware Functionality....................................................85
8.7 Bulkext Firwmare Example........................................................................................86
8.7.1 Description.....................................................................................................86
8.7.2 Building Bulkext fIrmware Example Code for EZ-USB RAM Memory and EE-
PROM87
8.7.3 Method to Download Firmware Image to EZ-USB Internal RAM and EEPROM
87
8.7.4 Binding Cypress USB Driver for the Downloaded Firmware Image...............88

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8.7.5 Testing the Bulkext Firmware Functionality....................................................88
8.8 EP_Interrupts Example..............................................................................................88
8.8.1 Description.....................................................................................................88
8.8.2 Building EP_Interrupts Firmware Example Code for EZ-USB RAM and EE-
PROM88
8.8.3 Method to Program EP_Interrupts Firmware Image to EZ-USB Internal RAM
and EEPROM88
8.8.4 Binding Cypress USB Driver for the Downloaded Firmware Image...............88
8.8.5 Testing the EP_Interrupts Firmware Functionality .........................................89
8.9 iMemtest Firmware Example.....................................................................................89
8.10 LEDcycle Firmware Example ....................................................................................89
8.11 Dev_IO Firmware Example .......................................................................................89
8.12 extr_intr Firmware Example.......................................................................................90
8.12.1 Testing the Example ......................................................................................91
8.13 Vend_ax Example .....................................................................................................91
8.13.1 Testing the vend_ax Example........................................................................92
8.14 Debugging Using Keil Monitor Program....................................................................97
9. Resources 105
9.1 Hardware Resources...............................................................................................105
9.2 Reference Designs..................................................................................................105
9.2.1 CY4611B - USB 2.0 to ATA Reference Design............................................105
9.2.2 CY4651 v1.3 - Cypress and AuthenTec Reference Design for Biometric Secu-
rity in External USB Hard Disk Drives106
9.2.3 CY3686 NX2LP-FLEX USB 2.0-to-NAND Reference Design Kit ................106
9.3 Application Notes.....................................................................................................106
A. Appendix 111
A.1 U2 (GAL) code (file is 'FX2LP.ABL')........................................................................111
A.2 Board Layout...........................................................................................................113
A.3 Schematic................................................................................................................114
A.4 Frequently Asked Questions ...................................................................................115

EZ-USB Development Kit User Guide, Doc. # 001-66390 Rev. *D 7
1. Introduction
1.1 Introduction
The EZ-USB®Development Kit (DVK) is a good starting point for developing an EZ-USB based
product. The DVK includes everything you will need to get started: a development board, example
firmware, a Microsoft-certified signed generic USB device driver (cyusb.sys), documentation, and
assorted tools. This section provides an overview of the DVK. The software installation of the kit
includes additional help files and documentation more specific to the various components in the kit.
The DVK is designed to work with the EZ-USB FX2LP and FX1 chips. FX1 is a full-speed only ver-
sion of FX2LP. Other than the absence of a high-speed transceiver, FX1 is identical to FX2LP.
Except where distinction is required, both chips are generically referred to as EZ-USB throughout
this document.
1.2 Kit Contents
The following list shows the components supplied in the EZ-USB DVK. They represent most of the
development tools required to build a USB system.
1.2.1 Hardware
■EZ-USB advanced development board
■EZ-USB prototyping board (breadboard)
■USB A-to-B cable
■RS-232 cable
■Software installation CD-ROM
■Three samples: EZ-USB FX1 IC (CY7C64713-128AXC) for the CY3674 kit and EZ-USB FX2LP
IC (CY7C68013A-128AXC) for the CY3684 kit.
■Quick start guide booklet
1.2.2 Software on CD-ROM
■EZ-USB firmware library and firmware frameworks
■Firmware sample code
■Microsoft-certified signed Cypress generic USB driver (3.4.5.000) for Windows XP, Vista, and 7
OS platforms.
■Cypress USB class library (CyApi)
■Cypress USB console
■SuiteUSB 3.4.7 Development tools for Visual Studio
■Cypress GPIF Designer
■Cypress firmware and Keil monitor download driver sample
■EZ-USB documentation and help files

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Introduction
■Reference schematics and PCB design and layout files.
■Limited evaluation version of the Keil 8051 development tools (Compiler, Assembler, IDE,
Debugger)
1.2.3 Required Tools Not Included
■Full retail Keil Development System (Keil uVision2)
■Microsoft Visual C++ and C# (all PC sample codes are developed on this platform).
■USB-capable PC running Windows 2000, XP, Vista, or 7.
1.2.4 Other Suggested Tools
■CATC USB Protocol Analyzer.
1.3 Document Revision History
1.4 Documentation Conventions
Table 1-1. Revision History
Revision PDF Creation
Date
Origin
of
Change Description of Change
** 02/07/2011 ROSM Initial version of user guide
*A 05/09/2011 NMMA Update to section 2.2 Schematic Summary
*B 06/06/2012 NMMA The document has to be updated with the OOB review comments.
*C 06/29/2012 NMMA Minor text edits. Updated correct path “Start->All programs->Cypress-
>Cypress Suite USB 3.4.7-->CyConsole” in the document.
*D 09/27/2013 DBIR Removed Section 7.2.4, Bulkloop Application.
Table 1-2. Document Conventions for Guides
Convention Usage
Courier New Displays file locations, user entered text, and source code:
C:\ ...cd\icc\
Italics Displays file names and reference documentation:
Read about the sourcefile.hex file in the PSoC Designer User Guide.
[Bracketed, Bold]Displays keyboard commands in procedures:
[Enter] or [Ctrl] [C]
File > Open Represents menu paths:
File > Open > New Project
Bold Displays commands, menu paths, and icon names in procedures:
Click the File icon and then click Open.
Times New Roman Displays an equation:
2 + 2 = 4
Text in gray boxes Describes Cautions or unique functionality of the product.

EZ-USB Development Kit User Guide, Doc. # 001-66390 Rev. *D 9
2. Getting Started
This chapter describes the installation of the CY3684 EZ-USB FX2LP DVK software. The process is
similar for the CY3674 EZ-USB FX1 DVK.
2.1 Kit Installation
To install the kit software, follow these steps:
1. Insert the kit CD/DVD into the CD/DVD drive of your PC. The CD/DVD is designed to auto-run
and the kit installer startup screen appears.
You can also download the latest kit installer ISO file for CY3684 and CY3674
Create an installer CD/DVD or extract the ISO using WinRar and install the executables.
2. Click Install CY3684 EZ-USB FX2LP DVK to start the installation, as shown in Figure 2-1.
Figure 2-1. Kit Installer Startup Screen
Note For EZ-USB FX1, click on Install CY3674 EZ-USB FX1 DVK. If auto-run does not execute,
double-click on the cyautorun.exe file in the root directory of the CD.
3. The InstallShield Wizard screen appears. The default location for setup is shown on the
InstallShield Wizard screen. You can change the location for setup using Change, as shown in
Figure 2-2. Click Next to launch the kit installer.

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Getting Started
Figure 2-2. InstallShield Wizard
4. On the Product Installation Overview screen, select the installation type that best suits your
requirement. The drop-down menu has three options - Typical, Complete, and Custom, as
shown in Figure 2-3. In the current installer, all three installation types result in the same set of
software getting installed. Select the default typical installation and click Next.
Figure 2-3. Installation Type Options

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Getting Started
5. When the installation begins, all packages are listed on the Installation page. A green check mark
appears adjacent to every package that is downloaded and installed, as shown in Figure 2-4.
Wait until all the packages are downloaded and installed successfully.
Figure 2-4. Installation Page
6. The Keil uVision2 trial version IDE triggers at this stage. If the software is already installed in the
PC, then the installer will not trigger the installation. If the PC does not contain the software, then
the Keil welcome screen appears, as shown in Figure 2-5. Click Next.

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Getting Started
Figure 2-5. Keil Welcome Screen
7. Enter the user name and company name credentials, as shown in Figure 2-6, to proceed with the
installation.
Figure 2-6. Keil User Information lnput Window
8. TheKeilsoftwareproceedswiththeinstallationandcopiesthenecessarypackagesatthedefault
directory C:\Keil. After completion, click on Finish, as shown in Figure 2-7.

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Getting Started
Figure 2-7. Keil User Information lnput Window
9. The GPIF designer software is triggered after Keil installation.This software is used to create
State machine waveforms to communicate between the EZ-USB device and devices such as
FPGA, image sensors, FIFO, and so on. If the software is already installed in the PC, then the
installer will not trigger the installation. If the PC does not contain the software, then the GPIF
Designer welcome screen appears, as shown in Figure 2-8. Click Next.
Figure 2-8. GPIF Designer Welcome Window

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Getting Started
10. Click Next in the subsequent windows and the Finish window appears, as shown in Figure 2-9.
Figure 2-9. GPIF Designer Welcome Window
11. The SuiteUSB 3.4.7 package install shield is triggered after the GPIF designer software installa-
tion. If the software is already installed in the PC, then the installer will not trigger the installation.
If the PC does not contain the software, then the SuiteUSB welcome screen appears, as shown
in Figure 2-10. Click Next and accept the Cypress Software license agreement, as shown in
Figure 2-11.
Figure 2-10. SuiteUSB Welcome Window

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Getting Started
Figure 2-11. SuiteUSB License Agreement Window
12.Enter the user credentials in the SuiteUSB window, as shown in Figure 2-12. Click Next. The
default directory of the SuiteUSB is C:\Cypress\Cypress Suite USB 3.4.7. The default
directory can be changed at this stage. Click Next after selecting the directory. Click the Install
button in the subsequent window. The SuiteUSB package installation progress is shown in the
next window. Finally the SuiteUSB Finish window appears. Click Finish button to complete the
installation process of SuiteUSB.

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Getting Started
Figure 2-12. SuiteUSB User Login Window
13.The CY3684 EZ-USB FX2LP development Kit Finish window appears after installing the kit con-
tent, Keil software, GPIF Designer, and the SuiteUSB 3.4.7 package.

EZ-USB Development Kit User Guide, Doc. # 001-66390 Rev. *D 17
Getting Started
Figure 2-13. CY3684 Finish Window
Note The procedure to install the CY3674 installer is similar to CY3684.
2.2 Install Hardware
No hardware installation is required for this kit.

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EZ-USB Development Kit User Guide, Doc. # 001-66390 Rev. *D 19
3. Advanced Development Board
3.1 Introduction
The EZ-USB Advanced Development Board provides a compact evaluation and design vehicle for
the EZ-USB family. The board provides expansion and interface signals on six 20-pin headers. A
mating prototype board allows quick construction and testing of USB designs. All ICs on the board
operate at 3.3 V. The board can be powered from the USB connector.
The EZ-USB Advanced Development Board is supplied as part of the Cypress EZ-USB DVK, which
includes an evaluation version of Cypress-customized software development tools from Keil
Software Inc. The Keil 8051 assembler, C compiler, and debugger work with the development board
to provide a complete code development environment. An 8051 debug monitor is typically loaded
into the development board expansion RAM to leave the internal RAM free for code development.
The evaluation version of the Keil tools that ships with the DVK has several restrictions that make it
inappropriate for real-world development. Most significantly, it limits the compiled object size to 4 KB.
The full retail version allows a code of any size.
3.2 Schematic Summary
Read this description while referring to the EZ-USB FX2LP development board schematic and the
FX2LP development board assembly drawing. Both drawings are located in the Schematic on
page 114 and are available in PDF format in the DVK hardware directory. With the exception of the
EZ-USB chip, the development boards in the FX2LP and FX1 DVKs are identical and are referred to
generically as the EZ-USB development board in the following sections.
U1 is either EZ-USB FX2LP (CY7C68013A-128AC) or FX1 (CY7C64713-128AC). This is the full-
function EZ-USB chip, which brings out the 8051 address and data buses for external memory
expansion. U2, a reprogrammable GAL, provides RAM enable signals for four jumper-selectable
memory maps. U3 is a 128-KB RAM, used for external 8051 memory expansion. Only 64 KB of this
memory is addressed by the 8051; the A16 pin is connected to a pull-up resistor that can be
attached to a GAL output to provide bank switching options.
U4 is a 3.3-V, 500-milliamp voltage regulator. U5 and U6 are socketed EEPROMS, used for EZ-USB
initialization and 8051 general-purpose access. U7 converts the 3.3-V 8051 serial port signals to
bipolar RS-232 levels. U8 and U10 are Philips PCF8574 I/O expanders, which attach to the EZ-USB
I2C bus and provide eight GPIO pins. U10 reads the four push-button switches, S2–S5, and U8
drives the 7-segment readout U9.
Six 20-pin headers, P1-P6, provide interface signals to the plug-in prototyping board supplied in this
kit. They also serve as connection points for HP (Agilent) logic analyzer pods. P8 contains a subset
of signals from P1–P6 on a connector that is pinned out for connection to a ‘straight-through’ ATA
cable.
Two slide switches, SW1 and SW2, control the connection and selection of the two socketed
EEPROMS at U5 and U6.

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Advanced Development Board
3.3 Jumpers
Table 3-1. EZ-USB Development Board Jumpers
3.4 EEPROM Select and Enable Switches SW1 and SW2
SW1 selects between two socketed EEPROMs, one strapped to address 000 (U6), and the other
strapped to address 001(U5).
SW2 enables or disables the EEPROM selected by SW1.
The EZ-USB chip has various startup modes, which depend on the existence of an EEPROM
connected to its SCL and SDA lines. Switches SW1 and SW2 allow the EEPROMs to be
disconnected from FX1/FX2LP, or to be connected using one of the two EEPROMs installed in
sockets U5 and U6.
The EZ-USB chip contains two I2C controllers, a “boot load” controller and an 8051 controller. The
boot load controller operates when EZ-USB comes out of reset, and the 8051 controller operates
under firmware control when the 8051 is running, allowing the 8051 to access general-purpose I2C
devices connected to the SCL and SDA lines. The following section deals with the roles of SW1 and
SW2 in accommodating the various boot load mechanisms.
The EZ-USB bootloader accommodates two EEPROM types, in “Small” and “Large” versions, as
shown in Table 3-2.
Jumper Function Default Notes
JP1, JP10 Connects 3.3 V power to
the EZ-USB chip. IN (1-2)
JP2 Powers the on-board 3.3 V regulator from USB Vbus
pin IN (1-2) To operate the board in self-powered mode, remove
JP2 and supply 4 V to 5 V to JP2-1, and GND to a
ground pin (TP1 is a convenient GND point).
JP3 Connects four GAL pins to
LEDS D2, D3, D4, D5 IN (1-2) (3-4) (5-6) (7-8)
U2, the on-board GAL, contains code to use the four
LEDs as software indicators that can be set. To use
the GAL pins for something else, which requires re-
programming the GAL or to wire the general purpose
indicators D2-D5 to other parts of the board, first
remove the appropriate shorting plug(s).
JP5 3.3 V power IN (1-2) Supplies 3.3-V power to the board. It can be removed and replaced with ammeter probes in series to mea-
sure board current.
JP6, JP7 Memory map selection OUT (1-2) These jumpers select one of the four memory maps for U3, the external 128 KB RAM. See Memory Maps
on page 26 for details.
JP8 Wakeup2 pin OUT (1-2)
Inserting a shorting plug into JP8 connects an on-
board RC network (R42,C43) to the secondary
remote wakeup pin WU2. This R-C network can be
used to test the periodic remote wakeup firmware
when this dual-purpose pin (it defaults to PA3) is pro-
grammed as WU2.
JP9 I2C bus test points N/A The I2C bus SCL and SDA lines can be monitored or
externally connected using JP9.