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FEATURES
Input voltage: 2.3 V to 5.5 V
Evaluates backlight, individual sinks, and dual light sensing
2
Translates USB to I
C interface
Jumpers for measurement of the LEDs and input supply current
On-board reset push-button and interrupt indicator
Connector to interface external target hardware
On-board regulators
Individually selectable on-board LEDs for backlight and
keypad light
GENERAL DESCRIPTION
The evaluation system is composed of a motherboard and
a daughterboard. The motherboard provides the I
from the computer USB port and generates the I/O voltages
and digital high and low signals for the daughterboard.
The motherboard features a 3.3 V regulator (VBOARD), a 3.7 V
regulator (VBATT), and a 2.7 V regulator (VDDIO). VBOARD
Rev. 0
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards are supplied "as is" and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
ADP8860 Parallel Backlight Driver with ALS
2
C® signals
MOTHERBOARD AND DAUGHTERBOARD LAYOUT
Figure 1.
Evaluation Board Manual
is the motherboard logic supply whereas VBATT provides
power to the daughterboard. VDDIO is the digital I/O voltage
2
supplying the I
C interface and the control pins. Jumper LK1 to
Jumper LK3 on the motherboard define whether the internal
regulators input voltage is supplied from the USB port or from
external supplies connected to J29. The motherboard regulators
are powered from the USB-VBUS line when Jumper LK1 to
Jumper LK3 are in the USB position. External voltages can be
applied to J29 to supply the motherboard and daughterboard,
Jumpers LK1 to LK2 must be set to EXT position to use the
external supply option.
The daughterboard contains numerous jumpers, LEDs, and test
points for easy evaluation and monitoring of the board.
EVALUATION KIT CONTENTS
ADP8860 evaluation board
ADP8860 daughterboard
USB cable
Evaluation software
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.
EVAL-ADP8860
www.analog.com
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Summary of Contents for Analog Devices EVAL-ADP8860
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Page 1: Features
Devices for its use, nor for any infringements of patents or other rights of third parties that may result One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. from its use. Analog Devices reserves the right to change devices or specifications at any time Tel: 781.329.4700 www.analog.com... -
Page 2: Table Of Contents
EVAL-ADP8860 TABLE OF CONTENTS Features ....................1 View/Modify Registers (Bit/Byte Level) ........12 General Description ................. 1 GUI Commands and Controls ..........12 Evaluation Kit Contents ..............1 Load/Save Registers Configuration ......... 13 Motherboard and Daughterboard Layout ........1 Additional Commands .............. 13 Revision History ................ -
Page 3: Installing The Software
EVAL-ADP8860 INSTALLING THE SOFTWARE Before starting the software installation, make sure that the Click Next> to install the files to the default destination folder ADP8860 adapter board is not connected to the USB port or click Browse… to choose a different file (see Figure 4). - Page 4 EVAL-ADP8860 Click Next> to install the program to the default Click Finish to complete the installation (see Figure 7). program folder (see Figure 6). Figure 7. InstallShield Wizard Complete Figure 6. Select Program Folder Rev. 0 | Page 4 of 24...
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Page 5: Installing The Usb Driver
EVAL-ADP8860 Click Finish to complete the driver installation (see INSTALLING THE USB DRIVER Figure 10). To install the USB driver, use the following steps: Plug the ADP8860 board into the computer using the USB cable provided with the evaluation kit. When the system recognizes the board, the dialog box shown in Figure 8 appears. -
Page 6: Quick Start
EVAL-ADP8860 QUICK START WARNING Upon starting the ADP8860 application, a firmware is loaded into the adapter board processor (Cypress IC). This firmware is needed for the operation of the USB adapter and communi- cation with the ADP8860 daughterboard. If the board is not connected through the USB cable, an error message appears on the screen (see Figure 12). - Page 7 EVAL-ADP8860 • Read Refresh option is unchecked (status registers are not To run the ADP8860 GUI, click Start > All Programs > Analog read periodically). Devices > ADP8860 Evaluation Software 0_x > ADP8860 • Refresh delay is 1000 ms. Evaluation SW. If the program starts correctly and the board is •...
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Page 8: Using The Software
EVAL-ADP8860 USING THE SOFTWARE 1 – VIEW/MODIFY OPTIONS AND INTERRUPTS 4 – VIEW/MODIFY COMPARATORS PARAMETERS 2 – VIEW/MODIFY BACKLIGHT PARAMETERS 5 – VIEW/MODIFY ACTIVATIONS 3 – VIEW/MODIFY INDIVIDUAL SINKS PARAMETERS 6 – VIEW/MODIFY REGISTERS (BIT/BYTE LEVEL) 7 – GUI COMMANDS AND CONTROLS Figure 15. -
Page 9: View/Modify Options And Interrupts
EVAL-ADP8860 The INT_CFG checkbox selects the interrupt reassertion VIEW/MODIFY OPTIONS AND INTERRUPTS mode. If unchecked, the interrupt is reasserted immediately, after clearing a pending interrupt, when the condition persists. If checked, the interrupt is deasserted at least 50 μs after clearing the pending interrupt. -
Page 10: View/Modify Individual Sinks Parameters
EVAL-ADP8860 The backlight fading law is shown/changed using the drop- The ON/OFF activation selections correspond to Register down control BL Fading Law. This corresponds to Bit[2:1] ISCC, Bit[6:0] (Address 0x10). In the software, this button is off in Register CFGR (Address 0x04). -
Page 11: View/Modify Comparator Parameters
EVAL-ADP8860 The value shown for the comparator levels can be represented VIEW/MODIFY COMPARATOR PARAMETERS in lux or microamperes the selection is controlled by the Comparator Unit checkbox. One LSB is equivalent to 10 lux (or 4 μA) for the L2 levels and 1.25 lux (or 0.5 μA) for the L3 levels. -
Page 12: View/Modify Registers (Bit/Byte Level)
EVAL-ADP8860 VIEW/MODIFY REGISTERS (BIT/BYTE LEVEL) The smart update option is not active for this block Therefore, a new value is written into the ADP8860 only following a write operation by depressing W or the Write Registers button. All the register values in the application window are always kept in synch. -
Page 13: Load/Save Registers Configuration
EVAL-ADP8860 ADDITIONAL COMMANDS The Read Refresh option enables the program to read the device status periodically. The refresh time is programmable The INFO button provides information regarding the software in the Refresh Rate window from 100 ms to 5 sec. The registers revision number and other release notes (see Figure 25). -
Page 14: Evaluation Board Overview
INDIVIDUAL JUMPERS SELECTION (UP TO THREE CURRENT LEVELS) Figure 29. Motherboard The EVAL-ADP8860 motherboard provides the interface The VBATT OKAY, VDDIO OKAY, and VBOARD OKAY signals to the ADP8860 parallel backlight IC. These include LEDs located at the top left of the board light up when the... - Page 15 EVAL-ADP8860 The VDDIO supply line determines the logic levels for nRST, nINT, SDA, and SCL. CHARGE-PUMP OUTPUT VOLTAGE (VOUT) SINK 1 – LED1 CATHODE BATTERY VOLTAGE SUPPLY (VBATT) SINK 1 – LED1 ANODE When shunted, Jumper J31 and Jumper J32 connect the Cypress C SERIAL DATA LINE (SDA) SINK 2 –...
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Page 16: Daughterboard
EVAL-ADP8860 DAUGHTERBOARD Figure 31. Daughterboard The ADP8860 evaluation daughterboard is designed to quickly Jumper JP6 must be installed in the PHS2 position if both evaluate key parameters of the ADP8860 IC. The board layout phototransistors are used. In addition, Jumper J16 in the... - Page 17 EVAL-ADP8860 Table 3. Measurement Signals for J2 Kelvin Measurements Signal Pin No. Description The input and output voltages are routed to Connector J1 VOUT 1, 2, 4 Charge-pump output voltage (VIN_SENSE) and Connector J2 (VOUT_SENSE) using Kelvin VOUT_SENSE Kelvin measurement at VOUT...
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Page 18: Evaluation Board Schematics And Artwork
EVAL-ADP8860 EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 32. Motherboard Schematic—Main Section Rev. 0 | Page 18 of 24... - Page 19 EVAL-ADP8860 Figure 33. Motherboard Schematic—Interface Section Rev. 0 | Page 19 of 24...
- Page 20 EVAL-ADP8860 Figure 34. Daughterboard Schematic Rev. 0 | Page 20 of 24...
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Page 21: Pcb Layout
EVAL-ADP8860 PCB LAYOUT Figure 35. Motherboard, Top Layer Figure 37. Motherboard, Inner Layer 2 Figure 36. Motherboard, Inner Layer 1 Figure 38. Motherboard, Bottom Layer Rev. 0 | Page 21 of 24... - Page 22 EVAL-ADP8860 Figure 39. Daughterboard, Top Layer Figure 41. Daughterboard, Inner Layer 2 Figure 40. Daughterboard, Inner Layer 1 Figure 42. Daughterboard, Bottom Layer Rev. 0 | Page 22 of 24...
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Page 23: Ordering Information
Vishay Dale or equivalent CRCW04022211FRT1 IC MCU USB peripheral high SPD-56QFN Cypress Semiconductor Corp CY7C68013A U2, U3, U4 IC LDO regulator, 500 mA, 8-Lead MSOP Analog Devices, Inc. ADP1715/ADP1716 Microchip Serial EEPROM-64K, MSOP8 Microchip M24LC64 or 24AA64 Crystal 24 MHz CTS Corporation... -
Page 24: Ordering Guide
Description ADP886XADAPT-EVALZ Motherboard ADP8860DBCP-EVALZ Daughterboard—LFCSP Version ADP8860DBCB-EVALZ Daughterboard—WLCSP Version Z = RoHS Compliant Part. ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB07988-0-7/09(0) Rev. 0 | Page 24 of 24...
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