SX1509 Evaluation Kit User's Guide User’s Guide

SX1509 Evaluation Kit User's Guide User’s Guide
User’s Guide
SX1509 Evaluation Kit
ADVANCED COMMUNICATIONS & SENSING
SX1509 Evaluation Kit
User's Guide
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User’s Guide
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ADVANCED COMMUNICATIONS & SENSING
Table of Contents
1
2
2.1
2.2
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
3.16
4
4.1
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.4
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.5
4.6
4.7
4.8
4.9
4.9.1
4.10
4.11
5
6
7
Introduction.............................................................................................................................................. 4
Getting Started......................................................................................................................................... 5
Kit Contents ............................................................................................................................................... 5
Installation ................................................................................................................................................. 5
Hardware Description .............................................................................................................................. 6
Overview ................................................................................................................................................... 6
USB Connector.......................................................................................................................................... 7
FT2232D ................................................................................................................................................... 7
EEPROM................................................................................................................................................... 7
VREG ........................................................................................................................................................ 7
VALL ......................................................................................................................................................... 7
VDDM, VCC1 and VCC2 ........................................................................................................................... 7
ADDR ........................................................................................................................................................ 7
IO [15-0] .................................................................................................................................................... 7
NINT.......................................................................................................................................................... 8
NRESET.................................................................................................................................................... 8
Keypad ...................................................................................................................................................... 8
RGB LED................................................................................................................................................... 8
OSCIO....................................................................................................................................................... 8
Stand-alone Jumpers................................................................................................................................. 9
Test Connector .......................................................................................................................................... 9
Software Description ............................................................................................................................. 10
Overview ................................................................................................................................................. 10
File Menu................................................................................................................................................. 10
Overview .................................................................................................................................................. 10
Connect/Disconnect.................................................................................................................................. 11
Refresh Registers ..................................................................................................................................... 11
Run Script................................................................................................................................................. 11
Save All Registers to Script....................................................................................................................... 11
Exit ........................................................................................................................................................... 11
Demos Menu ........................................................................................................................................... 12
Overview .................................................................................................................................................. 12
Light Show................................................................................................................................................ 12
Color Mixing (RGB)................................................................................................................................... 13
Keypad ..................................................................................................................................................... 13
Help Menu ............................................................................................................................................... 14
Overview .................................................................................................................................................. 14
User’s Guide............................................................................................................................................. 15
Datasheet ................................................................................................................................................. 15
LED Driver Calculation Sheet.................................................................................................................... 15
About........................................................................................................................................................ 15
Registers Tabs ........................................................................................................................................ 15
I2C Slave Address ................................................................................................................................... 15
NINT........................................................................................................................................................ 15
NRESET.................................................................................................................................................. 15
IO Control (RegData) ............................................................................................................................... 16
Auto Read on NINT................................................................................................................................... 16
FOSC ...................................................................................................................................................... 16
Status Bar................................................................................................................................................ 16
Schematics............................................................................................................................................. 17
Layout .................................................................................................................................................... 18
References ............................................................................................................................................. 19
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Table of Figures
Figure 1: SX1509 Typical Applications..................................................................................................................... 4
Figure 2: SX1509EVK Contents .............................................................................................................................. 5
Figure 3: SX1509EVK Board Picture ....................................................................................................................... 6
Figure 4: SX1509EVK Board Concept ..................................................................................................................... 6
Figure 5: SX1509EVK GUI Overview..................................................................................................................... 10
Figure 6: SX1509EVK GUI File Menu .................................................................................................................... 10
Figure 7: SX1509EVK Script File Example ............................................................................................................ 11
Figure 8: SX1509EVK GUI Demos Menu............................................................................................................... 12
Figure 9: SX1509EVK Light Show Demo Window.................................................................................................. 12
Figure 10: SX1509EVK Light Show Demo Jumpers Configuration (right position, default)...................................... 12
Figure 11: SX1509EVK Color Mixing (RGB) Demo Window................................................................................... 13
Figure 12: SX1509EVK Color Mixing (RGB) Demo Jumpers Configuration (upper right position) ........................... 13
Figure 13: SX1509EVK Keypad Demo Window ..................................................................................................... 14
Figure 14: SX1509EVK Keypad Demo Jumpers Configuration (keypad position) ................................................... 14
Figure 15: SX1509EVK GUI Help Menu................................................................................................................. 14
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1 Introduction
OSCIO
The purpose of this tool is to provide an evaluation platform for the SX1509 and more generally for the SX1507/8/9
family, World’s Lowest Voltage Level Shifting GPIOs with LED Driver and Keypad Engine.
The SX1507/8/9 family of GPIOs connects directly with low core voltage baseband chipsets in battery powered,
handheld applications avoiding level translating circuits, minimizing cost and board space.
LEVEL SHIFTING
VCC1
1.2 - 3.6V
IO0-7
VDDM
1.2 - 3.6V
Host
Controller
I2C
NINT
8
SX1509
FULL LED DRIVE
VCC2
1.2 - 3.6V
NRESET
IO8-15
8
ADDR1
ADDR0
KEYPAD SCANNING
BUTTON CONTROL
Figure 1: SX1509 Typical Applications
SX1507/8/9 main features include:
•
•
•
•
•
•
•
•
•
1.2V to 3.6V Low Operating Voltage with Dual Independent I/O Rails (VDDM, VCC1, VCC2)
Enable Direct Level Shifting Between I/O Banks and Host Controller
5.5V Tolerant I/Os, Up to 15mA Output Sink on All I/Os (No Total Sink Current Limit)
Integrated LED Driver for Enhanced Lighting
Intensity Control (256-step PWM)
Blink Control (224 On/Off values)
Breathing Control (224 Fade In/Out values)
On-Chip Keypad Scanning Engine
Support Up to 8x8 Matrix (64 Keys)
Configurable Input Debouncer
4/8/16 Channels of True Bi-directional Style I/O
Programmable Pull-up/Pull-down
Push/Pull or Open-drain outputs
Programmable Polarity
Open Drain Active Low Interrupt Output (NINT)
Bit Maskable
Programmable Edge Sensitivity
Built-in Clock Management (Internal 2MHz Oscillator/External Clock Input, 7 clock values)
OSCIO can be Configured as GPO
400kHz I2C Compatible Slave Interface
4 User-Selectable I²C Slave Addresses
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2 Getting Started
2.1 Kit Contents
As illustrated in the figure below, the SX1509 Evaluation kit is composed of:
SX1509EVK board
SX1509EVK CDROM including all necessary PC software and documentation (requires min Windows XP)
Mini USB cable to connect the SX1509EVK board to the PC
Figure 2: SX1509EVK Contents
2.2 Installation
1- Put the CDROM in your computer. If the installation does not start automatically, launch
“SX1509EvaluationKitSetup.exe” manually.
2- Follow installation guidelines until the process is completed. Please note that .NET Framework 3.5 and the
FTDI USB driver will be automatically downloaded/installed if not detected on your computer.
3- Connect the SX1509EVK board to the PC via the mini USB cable.
4- Launch “SX1509EVK” from Start menu.
5- SX1509EVK is now ready to be used. Go to Demos menu to quickly show functionality (follow
instructions and click on Start, Cf. §4.3 for more details).
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3 Hardware Description
SX1509EVK board is described in this chapter. Please refer to the schematics and layout provided at the end of the
document for more details about the exact hardware implementation.
3.1 Overview
Figure 3: SX1509EVK Board Picture
Figure 4: SX1509EVK Board Concept
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3.2 USB Connector
The USB connector allows the EVK to be connected to a PC from which it will get its power and
configuration/control commands via the dedicated software. It is associated to an LED to indicate the USB
connection.
3.3 FT2232D
The FT2232D from FTDI will be used as a USB to I2C bridge between the PC and the SX1509; moreover it will also
monitor and control NRESET and NINT signals. (similarly to what a host uC would do in a final application)
3.4 EEPROM
FT2232D is usually associated to an EEPROM which keeps the FTDI chip’s parameters when power is turned off.
The EEPROM is also used to customize USB device description.
3.5 VREG
VREG is fixed to the typical operating voltage of 3.3V, ensuring correct I2C communication between the SX1509
and the FT2232D.
3.6 VALL
By default, the VALL jumper is ON and thus connects VALL to VREG. Jumper can be removed and VALL supplied
externally if needed.
3.7 VDDM, VCC1 and VCC2
By default, the VDDM, VCC1 and VCC2 jumpers are ON and thus connect all SX1509 supply lines to VALL
(=VREG=3.3V by default). If needed, the jumpers can be independently removed and the SX1509 supplied
externally either directly on the jumper sockets themselves or via the screw terminal (in this case make sure the
equivalent jumper is removed before applying any external voltage).
Important: please note that although the SX1508 operates down to 1.2V, if VDDM falls below 1.9V (worst case input
threshold spec of the FT2232D) the I2C communication to the FT2232D (and hence the GUI operation) may be
compromised.
3.8 ADDR
ADDR jumpers are connected to the ADDR0 and ADDR1 pins of the SX1509. They are used to select one of the
four I2C slave addresses available by connecting ADDRx pin to ground (down position, default) or VDDM (up
position). As described later in the document, the jumpers setting must be coherent with the GUI setting to allow I2C
communication.
3.9 IO [15-0]
Each IO of the SX1509 can be connected in 4 ways (5 for IO7-5):
⇒ Jumper on left position (Cf. Figure 4): IO is connected to a switch to control an input state. Switch up =>
VCCx applied; Switch down => GND applied. No hardware debouncing circuit is added (debouncing can be
done inside the SX1509) but only a serial resistor to prevent potential short circuit when manipulating
jumpers.
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⇒ Jumper on right position (Cf. Figure 3 and Figure 10): IO is connected to a 5V/15mA white LED structure to
monitor an output state and illustrate static, intensity controlled, blinking, and breathing LED applications.
Output high => LED OFF; Output low => LED ON.
⇒ Jumper on upper right position (Cf. Figure 12, IO7-5 only): IO is connected to a 5V/15mA RGB LED
structure to illustrate color mixing applications (IO7=R, IO6=G, IO5=B).
⇒ Jumper on corresponding keypad position (Cf. Figure 14): IO is connected to the keypad’s corresponding
row or column to use the keypad scan engine.
⇒ Jumper removed : IO can be controlled or monitored externally
Please note that the jumpers do not modify the IO configuration of the SX1509 itself (i.e. Input or Output), this must
be done via the PC software. User must make sure that the SX1509 registers configuration is always in line with the
jumpers’ configuration on the board.
3.10 NINT
NINT is connected to the FT2232D for remote monitoring from the PC and is also connected to a green LED onboard. Please note that NINT is active low, i.e. the LED will turn OFF when an appropriate change is detected on
the inputs. The LED can be disconnected via a jumper if needed.
3.11 NRESET
NRESET is connected to the FT2232D for remote monitoring and control from the PC and is also connected to a
push button on board (button low => GND applied). Please note that NRESET is active low. The push button can be
disconnected via a jumper if needed.
3.12 Keypad
SX1509EVK includes a 8x8 matrix keypad made of 64 individual push buttons. This keypad is meant to be used
with the SX1509 keypad scan engine and hence is pre-connected appropriately (Cf. schematics). To avoid any
conflict on the IO lines the keypad is associated with one jumper per row/column (i.e. per IO) which is empty by
default. User hence needs to use the unique blue IO jumper on the top/bottom section to connect the appropriate
row/column.
3.13 RGB LED
SX1509EVK includes a (3x) 5V/15mA RGB LED structure (active low) to illustrate color mixing applications. (IO7=R,
IO6=G, IO5=B).
3.14 OSCIO
OSCIO section is made of a jumper and a 5V/15mA blue LED structure (active low) which allows visualizing
oscillator activity (OSCOUT) or applying an external oscillator input signal (OSCIN) when jumper is removed.
Additionally, for lab measurements convenience, an SMA connector footprint has been planned.
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3.15 Stand-alone Jumpers
These jumpers are placed on the four lines that are connected between FT2232D and SX1509 (SDA, SCL,
NRESET, NINT). Their purpose is, as their name suggests, being able to disconnect the SX1509 from the rest of the
circuitry to access it externally (with an external uC, sharing another I2C bus, etc.)
3.16 Test Connector
A 52-pin edge connector with all SX1509 pins and specific pinout is integrated on board for easy monitoring of all
signals.
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4 Software Description
4.1 Overview
Figure 5: SX1509EVK GUI Overview
4.2 File Menu
4.2.1 Overview
File menu contains some general purpose functions. Some of them can also be accessed on the toolbar by clicking
directly on the icon.
Figure 6: SX1509EVK GUI File Menu
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4.2.2 Connect/Disconnect
This item is used to connect/disconnect the SX1509EVK GUI to/from the SX1509EVK board. For connection, the
I2C address selected on the GUI must be coherent with the ADDR jumper configuration on the board.
The icon and name of the menu item dynamically changes depending on the current connection state.
This feature is also available directly on the toolbar.
4.2.3 Refresh Registers
This item is used to manually read out all registers values from the SX1509EVK to update the GUI.
This feature is also available directly on the toolbar.
4.2.4 Run Script
For user and support convenience, the SX1509EVK offers the possibility to save/load registers’ current configuration
into/from a file.
The “Run Script” feature loads “New” registers values from a previously saved script file.
This feature is also available directly on the toolbar
Figure 7: SX1509EVK Script File Example
4.2.5 Save All Registers to Script
This item saves the “Current” registers values in a script file.
This feature is also available directly on the toolbar.
4.2.6 Exit
This item closes the SX1509EVK GUI.
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4.3 Demos Menu
4.3.1 Overview
Demos menu contains three items: Light Show, Color Mixing (RGB) and Keypad. These demos associated with a
specific jumpers’ configuration on board allows the user to quickly show the functionality of the most important
features of the SX1509.
Figure 8: SX1509EVK GUI Demos Menu
4.3.2 Light Show
Pressing the “Start” button will launch the demo and play a pre-programmed light show on the SX1509EVK board
white LEDs accordingly to the selected item (All, Classic, Intensity Control, Blinking or Breathing).
Figure 9: SX1509EVK Light Show Demo Window
Figure 10: SX1509EVK Light Show Demo Jumpers Configuration (right position, default)
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4.3.3 Color Mixing (RGB)
This demo can be used in two ways:
- Automatic: pressing the “Start” button will launch the automatic demo and perform a preprogrammed color
mixing sequence on the SX1509EVK board’s RGB LED.
- Manual: When “Start” button is not pressed the user can enter manually his R, G, and B settings and
observe the color mixing result on board. Custom color can be typed directly in Register view on the left,
clicked in the center section color panel (displayed colors depend on the primary color fixed on right section,
in figure below -> Red), or selected from the right section sliders.
Figure 11: SX1509EVK Color Mixing (RGB) Demo Window
Figure 12: SX1509EVK Color Mixing (RGB) Demo Jumpers Configuration (upper right position)
4.3.4 Keypad
Pressing the “Start” button will launch the demo.
User can press any button on the SX1509EVK board; it will be displayed accordingly on the GUI.
Please note that you will observe some delay essentially due to USB/PC reaction time.
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Figure 13: SX1509EVK Keypad Demo Window
Figure 14: SX1509EVK Keypad Demo Jumpers Configuration (keypad position)
4.4 Help Menu
4.4.1 Overview
Figure 15: SX1509EVK GUI Help Menu
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4.4.2 User’s Guide
This item opens the SX1509EVK User’s guide.
4.4.3 Datasheet
This item opens the SX1507/8/9 Datasheet.
4.4.4 LED Driver Calculation Sheet
This item opens the LED Driver calculation sheet.
4.4.5 About
This item gives access to some useful information such as the software version.
4.5 Registers Tabs
Registers are classified in several tabs depending on their function.
Each tab is split into two sections:
Raw section (left) represents all the registers of the selected tab in hexadecimal.
User friendly section (right) represents each of the registers settings/subdivisions in a user friendly way:
radio buttons, rolling menu, check box, LED, etc…
A register value can be either modified in the user friendly section by selecting the right item (change is sent to the
IC when the new item is clicked) or typed into the raw section (change is sent to the IC when Enter is pressed).
Whatever method is used, raw and user friendly sections are dynamically attached and always displayed
consistently.
Please note that oscillator operation is OFF by default and that LED Driver and Keypad/Debounce features are only
available if oscillator operation is activated in “Clock” register tab.
Please refer to the SX1507/8/9 datasheet [1] for detailed registers description.
4.6 I2C Slave Address
Slave address can be selected from the four available ones and ADDR jumpers corresponding picture is
dynamically modified accordingly. The user can then easily check that his jumpers’ configuration is correct on the
board.
4.7 NINT
The LED reflects the logical level of the NINT pin. Please note that NINT is active low, i.e. LED will turn OFF when a
change is detected on the inputs.
4.8 NRESET
The LED reflects the logical level of the NRESET pin and the push button allows the user to force a reset by clicking
on it (button pressed => NRESET forced to GND, button released => NRESET released). Please note that NRESET
is active low, i.e. LED will turn OFF when reset is active.
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4.9 IO Control (RegData)
User can control the IO state via the switches for IOs set as outputs and via LEDs for IOs set as inputs (switch/LEDs
configuration complementary to the boards’ configuration).
Switch/LEDs configuration is dynamically attached to the RegDirB/A registers and is always displayed consistently.
Switch/LEDs value is dynamically attached to the RegDataB/A registers and is always displayed consistently.
“Read” button reads RegDataB/A.
4.9.1 Auto Read on NINT
To demonstrate the use of the NINT pin, it is possible for the user to enable “Auto Read on NINT”: RegDataB/A
registers will automatically be read when NINT goes low, without having to press the “Read” button.
Please note that by default no interrupt is enabled on any of the IOs. This can be modified in the “Interrupts/Events”
registers tab.
4.10 FOSC
This user editable field (2MHz by default) is not linked to any register but is needed to do all oscillator frequency
related calculations in the register tabs.
Please note that oscillator operation is OFF by default and that LED Driver and Keypad/Debounce features are only
available if oscillator operation is activated in “Clock” register tab.
4.11 Status Bar
The current status of the tool is displayed here.
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5 Schematics
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6 Layout
Ground planes removed for clarity.
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7 References
[1] SX1507/8/9 Datasheet
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