Applied Data Systems Bitsy Plus User manual

Bitsy Plus
User’s Manual
ADS document # 110114-1001A
Applied Data Systems
www.applieddata.net
9140 Guilford Road
Columbia MD 21046 USA
301-490-4007
© 2003 ADS

Bitsy Plus User’s Manual
ADS document # 110114-1001A Page i
About the Cover Image
The cover image shows a Rev A Bitsy Plus populated with the supercapacitor option.
Printing this Manual
This manual has been designed for printing on both sides of a 8.5x11 inch paper, but can be
printed single-sided as well. It has also been optimized for use in electronic form with active
cross-reference links for quick access to information.
Revision History
This table summarizes the changes made between revisions of this manual.
REV DESCRIPTION DATE/BY
6Initial release 11/04/02
ak
A
Product Specification Changes and Updates
Add Vcc and Vddx sleep current specs (6.2.4)
Add power consumption measurements and plots (6.2.5)Change
ADSmartIO PA5 from VBATT_NEG to DC_GOOD (4.3.7,
6.2.1)
Change DCIN_POS parameter to VBATT_POS, reduce minimum
voltage from 6 to 5 V and add note 15.
Add Vsleep,hyst parameter and note (6.2.1)
Lower Vsleep voltage specification (6.2.1)
Update value for Rtl (6.2.6, 7.2.5)
Update value for Rp pcmcia (6.2.12)
Add max current drain on Vref (6.2.6)
Add specs for PCMCIA VS and CD pull-up voltage and resistance
(6.2.12)
Add contrast circuit power specifications to section 6.2.2.
Add note about analog input resolution (6.2.6)
Indicate that PD0 and PD1 are for dedicated functions and not
available for general purpose use (3.3.8, 4.3.7)
Increase 5 V PCMCIA/CF socket power to 2.5W (6.2.12)
5/2/2003
ak

Bitsy Plus User’s Manual
Page ii ADS document # 110114-1001A
A
New Information
Update PD3 from /RqOnOff to CPLD wakeup in section 4.3.7
Update SA-1110 signal cross-reference (4.1.6) with GP11 and GP12
changes
Add notes about the USB_Reconn signal in sections 3.3.3 and 4.5.2.
Add ADSmartIO voltage reference power control to section 5.3.2
and 6.2.6.
Expand information about A/Ds and digital I/Os in section 1.2.6
Expand information about connections for external interrupt sources,
section 4.1.4
Add section 5.4.2, Power Loads During Sleep
Add cross-references to section 3.3.1 (J1).
Expand introduction to section 5.2
Add note about /BacklightOn changes in Revision History (7.2.1)
Add FAQ about LEDs in section 2.2
Add introduction to section 4.5
Add details about processor voltages (6.2.10)
Expand information about PCMCIA/CF current leaks during sleep
(6.2.12)
Add "Printing this Manual" section
Add pin direction information to pinouts (3.3)
Add note about change in 3.3V PCMCIA power control (7.2.4)
Add information about driver of LED; expand note about GP20,
which is shared by LED0/DTR1 (3.1.2)
Add rev. 5 Vref and /RqOnOff changes to power management
diagram (5.3.2)
Add diagram of audio architecture (6.2.9)
Update mechanical drawing and clearances (6.1.1) and note lower
height profile (7.2.4)
Add 5-wire touch panel signal names to J3 signal table (3.3.3)
Add detail about availability of 128 MiB RAM (1.2.3, 4.1.2)
Remove unimplemented "Reset CPU" feature from ADSmartIO
table (4.3.2)
Update USB wording and add details about the USB_Reconn signal
(4.5.2)
Add USB devices to 5V and Sleep loads (5.4.1, 5.4.2)
Credit Linear Tech for "Burst Mode" (5.3.8)
Change diode in battery charger to fuse (5.5.3)
Clarified USB_PWR_SENSE and USB_PWR_CTRL voltage specs
(6.2.8)
Add section 5.3.3, System Sleep

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ADS document # 110114-1001A Page iii
A
Clarifications
Clarify availability of A/Ds in section 4.3.4
Update backlight power section (5.3.6) to clarify that backlight
power is not handled by the Bitsy Plus
Add to Rev 2 Revision History that EIOn I/Os can source/sink more
current
Update signal tables to include analog and open-collector signal
types; indicate direction of power signals
Clarify how SPI chip select controlled (4.5.3)
Clarify that OS can put the system to sleep when power fails (5.2.2)
Clarify that voltage ref for ADSmartIO A/Ds is not software
controlled; it is turned off when system is asleep (5.3.2, 7.2.5)
Add 64 MiB flash and footnote about availability (1.2.3)
Add note about Vsleep and wakeup (5.3.4)
Add Note 4about Vsleep (6.2.1)
Add sleep current notes 16 and 17 (6.2.4)
A
Corrections
Correct reversal of MOSI and MISO signals in section 3.3.3 and add
signal name details in section 4.5.3.
Correct usage of GP 27 in table of section 4.1.6 (not available on J3)
Correct error: JP3 does not control panel data voltage. Sections
updated: 3.2.1(remove note), 4.6.2 and 4.6.3 (correct text), 6.2.2
(add information about R288 and R289)
Correct Serial 1 connector (J1 to J10) (4.1.6)
Remove extra close parenthesis in Icharge equation of section 5.3.7
Correct ADSmartIO cross-reference (4.3.1)
Correct "Vdd" to "V" in controller specs and remove reference to
PowerEnable (6.2.7)
Correct information about JP3 and LED; add diagram of LED circuit
(3.1.2)
Correct IrDAOn notes: no pull-up (3.3.3)
Update and correct power supply diagram (esp. 3.3V powered from
DC_IN); add notes about factory options (5.3.1)
Correct Note 13 (6.2.2) to indicate that Vee and Vcon available
concurrently
Correct typo: LLD to LDD

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ADS document # 110114-1001A Page v
Table of Contents
About the Cover Image..........................................................................................................................................i
Printing this Manual...............................................................................................................................................i
Revision History.....................................................................................................................................................i
Table of Contents..................................................................................................................................................v
1Introduction.......................................................................................................................................1
1.1 Overview ...............................................................................................................................1
1.2 Features..................................................................................................................................1
1.2.1 Processor......................................................................................................................1
1.2.2 Power Supply...............................................................................................................1
1.2.3 Memory .......................................................................................................................1
1.2.4 Communications..........................................................................................................1
1.2.5 User Interface and Display ..........................................................................................2
1.2.6 I/O 2
1.2.7 Audio Interface............................................................................................................2
1.3 Block Diagram.......................................................................................................................3
2Getting Started ..................................................................................................................................5
2.1 Development Systems ...........................................................................................................5
2.1.1 System Components ....................................................................................................5
2.1.2 Bitsy Plus Personality Boards......................................................................................5
ADS CF Personality Board ..................................................................................5
ADS Ethernet Personality Board..........................................................................6
2.2 Frequently Asked Questions..................................................................................................6
2.3 Organization of this Manual ..................................................................................................7
2.4 Errata, Addenda and Further Information..............................................................................7
3Hardware Reference..........................................................................................................................9
3.1 Switches and Indicators.........................................................................................................9
3.1.1 S1: DIP Switch ...........................................................................................................9
3.1.2 LED Indicator..............................................................................................................9
3.2 Jumper Settings......................................................................................................................9
3.2.1 JP3: Flat Panel Power Select ....................................................................................10
3.2.2 JP4: Vee Polarity Select............................................................................................10
3.3 Connector Pinouts................................................................................................................10
3.3.1 J1: LCD Panel Interface Connector..........................................................................11
3.3.2 J2: PCMCIA .............................................................................................................12
3.3.3 J3: Power, I/O, Serial 2 & 3, USB, Touch Screen and others...................................12

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3.3.4 J4: Manufacturing Test Connector............................................................................13
3.3.5J5: JTAG Connector .................................................................................................13
3.3.6 J6: Input Power Connector .......................................................................................13
3.3.7 J9: External CompactFlash / Expansion Bus............................................................14
3.3.8 J10: ADSmartIO, USB, Serial 1, Stereo Audio, I/Os ...............................................15
4Feature Reference............................................................................................................................17
4.1 System Architecture.............................................................................................................17
4.1.1 Boot Code..................................................................................................................17
4.1.2 Synchronous DRAM .................................................................................................17
4.1.3 Non-Volatile Memory ...............................................................................................17
Flash Memory.....................................................................................................17
ADSmartIO EEPROM........................................................................................17
CompactFlash and PCMCIA/ATA Cards...........................................................17
RTC NVRAM ......................................................................................................18
4.1.4 Interrupts....................................................................................................................18
4.1.5 CompactFlash / Expansion Bus.................................................................................18
4.1.6 SA-1110 GPIO Cross-Reference...............................................................................18
4.2 Real-Time Clock (RTC) ......................................................................................................19
4.3 ADSmartIO..........................................................................................................................19
4.3.1 Overview ...................................................................................................................19
4.3.2 ADSmartIO Features.................................................................................................20
4.3.3 Digital I/Os................................................................................................................20
4.3.4 Analog Inputs (A/D)..................................................................................................20
4.3.5 Temperature Sensing .................................................................................................20
4.3.6 Keypad Scan..............................................................................................................20
4.3.7 ADSmartIO Signal Cross-Reference.........................................................................22
4.4 Audio...................................................................................................................................23
4.4.1 Microphone Pre-amps................................................................................................23
4.4.2 Audio Outputs: Speakers and Headphones................................................................23
Connecting Speakers ..........................................................................................23
Connecting Headphones.....................................................................................23
Using Stereo Headphones and Speakers in the Same System.............................25
4.5 Data Communications .........................................................................................................25
4.5.1 Serial Ports.................................................................................................................25
4.5.2 USB ...........................................................................................................................25
USB Host............................................................................................................26
USB Client..........................................................................................................26
4.5.3 SPI Bus......................................................................................................................26
Overview.............................................................................................................26
SPI on the Bitsy Plus ..........................................................................................27
Alternate uses of the SPI Port.............................................................................27
4.5.4 I2C Bus Master and SMBus.......................................................................................27
Overview.............................................................................................................27
I2C on the Bitsy Plus...........................................................................................27
SMBus.................................................................................................................28
4.6 Displays...............................................................................................................................28
4.6.1 Display Types Supported...........................................................................................28

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4.6.2 Panel Voltages ...........................................................................................................28
4.6.3 Display Signals..........................................................................................................29
4.6.4 Creating Display Cables ............................................................................................29
4.6.5 Developing Display Drivers ......................................................................................29
4.6.6 Brightness Control (Backlight)..................................................................................30
4.6.7 Contrast Control (Vee and Vcon)..............................................................................30
4.6.8 Touch Panel...............................................................................................................30
4.7 EMI/RFI and ESD Protection..............................................................................................30
4.7.1 Agency Certifications................................................................................................30
4.7.2 Protecting the Power Supply Inputs...........................................................................30
5Power and Power Management.......................................................................................................31
5.1 Determining the Features You Need....................................................................................31
5.2 Power Management Modes .................................................................................................32
5.2.1 StrongARM Power Management Modes...................................................................32
5.2.2 Power Management on the Bitsy Plus.......................................................................32
5.3 Architectural Overview and Power Management Features..................................................33
5.3.1 Power Supply Architecture........................................................................................33
5.3.2 Subsystem Partitioning..............................................................................................33
5.3.3 System Sleep..............................................................................................................35
Power Failure Interrupt .....................................................................................35
RQOnOff Input ...................................................................................................36
Software Control ................................................................................................36
5.3.4 System Wakeup .........................................................................................................36
RQOnOff Input ...................................................................................................36
Touch Panel........................................................................................................36
Timed Wakeup....................................................................................................36
ADSmartIO.........................................................................................................36
5.3.5 Supercapacitors (factory option)................................................................................37
Charging.............................................................................................................37
Discharging........................................................................................................37
5.3.6 Backlight Power.........................................................................................................38
5.3.7 Battery Trickle Charger (factory option) ...................................................................38
5.3.8 Power Supply Efficiency...........................................................................................39
5.4 Designing for Optimal Power Management ........................................................................39
5.4.1 Create a Power Budget for Peripherals......................................................................39
3.3 V Loads.........................................................................................................39
5V Loads............................................................................................................40
Loads on Main Supply........................................................................................40
5.4.2 Power Loads During Sleep........................................................................................40
5.5 Power Supply Examples......................................................................................................41
5.5.1 Basic DC Supply........................................................................................................41
5.5.2 Automotive System ...................................................................................................41
5.5.3 Line Power and Battery with External Charger.........................................................42

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6System Specifications .....................................................................................................................43
6.1 Mechanical Specifications...................................................................................................43
6.1.1 Mechanical Drawing..................................................................................................43
6.1.2 Mounting Holes.........................................................................................................43
6.1.3 Clearances..................................................................................................................44
6.2 Electrical Specifications ......................................................................................................45
6.2.1 Temperature, Reset, Sleep, Wakeup..........................................................................45
6.2.2 Display.......................................................................................................................46
6.2.3 Touch Panel Controller..............................................................................................46
6.2.4 Power Supply.............................................................................................................47
6.2.5 Power Consumption...................................................................................................48
6.2.6 ADSmartIO Controller ..............................................................................................49
6.2.7 System Controller with Digital I/Os..........................................................................50
6.2.8 USB ...........................................................................................................................50
6.2.9 Audio.........................................................................................................................50
6.2.10 SA-1110 Processor ....................................................................................................52
6.2.11 Crystal Frequencies ...................................................................................................52
6.2.12 SA-1111 Companion Chip.........................................................................................53
PCMCIA, CompactFlash Port and Expansion Bus............................................53
7Board Revision History...................................................................................................................55
7.1 Identifying the board revision..............................................................................................55
7.2 Revision History..................................................................................................................55
7.2.1 Revision 2..................................................................................................................55
New Features......................................................................................................55
Enhancements.....................................................................................................55
Changes..............................................................................................................55
7.2.2 Revision 3..................................................................................................................57
7.2.3 Revision 4..................................................................................................................57
7.2.4 Revision 5:.................................................................................................................57
New Features......................................................................................................57
Enhancements.....................................................................................................57
Changes..............................................................................................................57
7.2.5 Revision A:................................................................................................................57
Enhancements.....................................................................................................57
Changes..............................................................................................................58