ACAlternating Current
BL8RAE–3 Main PWB
BOCBlue Oyster Cult
CMTCellular Mobile Transceiver
CCFLCold Cathode Fluorescent Lamp
DL2Linda Display module including PWB and displays
ESDElectro Static Discharge
FPCFlexible Printed Circuit
FSTNFilm Compensated Super Twisted Nematic
LCDLiquid Crystal Display
LEDLight Emitting Diode
MCUMicro Computer Unit
PWBPrinted Wiring Board
PDAPersonal Digital Assistant
UIUser Interface
UIFUser InterFace
UL2DL2 PWB submodule
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RAE-3
Technical Documentation
RAE-3 User Interface Structure
RAE–3 GSM900/GSM1800 Dual Band Communicator User Interface comprises the QWERTY keyboard module UL8 and the DL2 module with both displays.
User Interface DL2
This section describes the DL2 module. This module includes
– a PWB (UL2) with SMD components,
– PDA display (including CCFL backlight),
– CMT display with frame and lightguide and
– CMT keypad backlights.
DL2 is located in the cover side of RAE–3. Figures below describe the two
sides of the module.
4. User Interfaces
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RAE-3
PAMS
4. User Interfaces
Technical Documentation
Main Components
DL2 main components include UL2 PWB with components, PDA display and
CMT display.
Components on the module assembly include the following:
– Four layer, 0.6mm thick PWB (UL2) including:
Page 4 – 6
Figure 1. DL2 module
– PDA LCD CCFL backlight circuit.
– Power circuit for PDA LCD bias voltages.
– Power circuit and LEDs for CMT keypad and CMT display back-
light.
– Antenna clips and ground plane.
– Coaxial cable connector for antenna cable.
– 10–pin and 20–pin flex connectors for PDA display module.
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Technical Documentation
– 50–pin flex connector for hinge flex.
– 10–pin flex connection for CMT display.
– 4–way stacker connection for piezo flex assembly.
– Pads for CMT keypad.
– PDA soft key switches.
– PDA LCD module including lightguide, piezo transformer FPC, CCFL and
metal frame.
– CMT Display module including metal frame and lightguide.
DC Characteristics
Supply voltages and power consumption are listed below:
Pin /
Conn.
X1/1,
X1/49,
X1/50
Line Sym-
bol
VBBattery Volt-
age
4. User Interfaces
ParameterMinimumT ypicalMaximumUnitNotes
3.03.64.2V4.8V Absolute
maximum
210mA
X1/1 1VBBLogic voltage
2.72.82.9V
20mA
Connections
The 50–way FPC connects the DL2 to the BL8 (system logic and RF board) via
the hinge. It has all active signals for the DL2 module and supply pins. It is
connected to the 50–pin board–to–board connector X1.
DL2 has coaxial cable connector for antenna cable. This co–axial cable goes
through the hinge to the BL8 RF part.
X1 connector pinout
PIN/
Pins
1,49
50
11VBBLogic voltage2.72.82.9VSupply
Line Sym-
bol
VBBattery voltage3.03.64.2VSupply
ParameterMin.T yp.
/
No
m.
Max.UnitActive
level
Function
3, 7,
19, 26,
37, 38,
44, 48
21LCDPWRPDA LCD Volt-
GNDGround0VSupply
ages switch
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0
1.58V
0.88V
VBB
VInactive
Active
Page 4 – 7
Input. High
level turns
on supply
to display
RAE-3
C
PAMS
4. User Interfaces
PIN/
Pins
16GenSClkSerial Clock for
18GenSDIOSerial Data for
46Row5LCDCDCMT display con-
15LCDENCMT display en-
bol
MT display
CMT display
trol / data
able
Technical Documentation
Min.ParameterLine Sym-
/
No
m.
03.254.0MHzInput
0
0.7xVBB
0
0.7xVBB
0
0.7xVBB
0
0.7xVBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
UnitMax.Typ.
level
VLow
High
VLow
High
VControl
Data
VActive
Inactive
FunctionActive
Input
Input
Input. Low
level selects command register
Input. Low
level enables writing to the
display
13LCDRSTXCMT display reset 0
14KBLIGHTSCMT keypad and
display backlight
control
22LCDDa0PDA display data0
2LCDDa1PDA display data0
4LCDDa2PDA display data0
33LCDDa3PDA display data0
8LCDDa4PDA display data0
31LCDDa5PDA display data0
32LCDDa6PDA display data0
6LCDDa7PDA display data0
0.7xVBB
0
0.7xVBB
1.58V
1.58V
1.58V
1.58V
1.58V
1.58V
1.58V
1.58V
0.3xVBB
VBB
0.3xVBB
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
VActive
Inactive
VActive
Inactive
VLow
High
VLow
High
VLow
High
VLow
High
VLow
High
VLow
High
VLow
High
VLow
High
Input. Low
level resets
the display
Input. High
level turns
lights on.
Input
Input
Input
Input
Input
Input
Input
Input
9LCDDa8PDA display data0
1.58V
5LCDDa9PDA display data0
1.58V
34LCDDa10PDA display data0
1.58V
Page 4 – 8
0.88V
VBB
0.88V
VBB
0.88V
VBB
VLow
High
VLow
High
VLow
High
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Input
Input
Input
PAMS
RAE-3
Technical Documentation
PIN/
Pins
20LCDDa11PDA display data0
25DISPClkPDA display Pixel
35LLClkPDA display Line
23FSPPDA display
10LCDMPDA display AC–
24DISPONPDA display ON/
36LCD_TEMPConnected to
30Col0Keypad column 00
27Col1Keypad column 10
28Col2Keypad column 20
43Col3Keypad column 30
45Col4Keypad column 40
29Row0Keypad row 00
39Row1Keypad row 10
40Row2Keypad row 20
41Row3Keypad row 30
bol
clock
pulse
Frame pulse
modulation
OFF
ground for color
display detection.
4. User Interfaces
Min.ParameterLine Sym-
/
No
m.
0.88V
1.58V
88.6610MHz
0
1.58V
010.812.5kHz
0
1.58V
051.559Hz
0
1.58V
010.815kHz
0
1.58V
0
1.58V
0.7xVBB
0.7xVBB
0.7xVBB
0.7xVBB
0.7xVBB
0.7xVBB
0.7xVBB
0.7xVBB
0.7xVBB
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
0.88V
VBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
0.3xVBB
VBB
UnitMax.Typ.
VLow
VLow
VLow
VLow
VLow
VActive
VLow
VLow
VLow
VLow
VLow
VLow
VLow
VLow
VLow
FunctionActive
level
Input
High
Input
High
Input
High
Input
High
Input
High
Input
Inactive
Unused.
Input
High
Input
High
Input
High
Input
High
Input
High
Output
High
Output
High
Output
High
Output
High
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RAE-3
PAMS
4. User Interfaces
PIN/
Pins
42Row4Keypad row 40
17LCDPWMPDA LCD Con-
47BACKPWM PDA LCD Back-
bol
trast control
light control
Antenna clip connector
DL2 has antenna clips that are connected to the antenna.
The following block diagram describes the distribution of power supplies within
DL2.
Battery voltage VB is fed directly to the illumination LEDS (CMT keymat and
CMT display)
The regulated band supply VBB generated on the BL8 module supplies the
CMT display, control logic and PDA display supply.
A power switch is used to remove the voltage supply from the control logic and
PDA display when the display is turned off.
Technical Documentation
VB
VBB
LCDPWR
GND
110mA20mA typ10mA typ
typical
300uA max
16mA typ
PDA LCD Bias power
and control logic
Figure 2. Power distribution and control signals of UL2.
CMT
LCD
PDA LCD
backlight
KBLIGHTSBACKPWM
Keyboard
backlightbacklight
CMT LCD
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Technical Documentation
DL2 Circuit Description
The module is connected via a 50 way FPC to the BL8 system logic.
The module includes following main blocks:
– CMT keyboard geometries.
– Switches for PDA soft keyboard
– Backlight LEDs for CMT keypad and CMT LCD illumination.
– CMT LCD.
– PDA LCD module.
– PDA LCD backlight circuit.
– PDA LCD power circuit.
– PDA LCD interface control logic.
4. User Interfaces
– Hinge flex connector.
– Antenna connector and ground plane.
Keypad scanning.
There is 26 keys located in DL2 module. 6 PDA soft keys are located inside the
lid and 20 CMT keys on the outer side. All these keys are in the same keyboard
matrix as the QWERTY–keypad in the UL8 module.
Col(0–4) are used as column lines in keypad. Row(0–4 and 6) are used as row
lines.
When a key is pressed the MCU gets an interrupt from a row and starts scanning. One column at a time is written low and rows are used to read which key
is pressed.
CMT keypad and CMT LCD backlight
The CMT keypad and CMT display are illuminated with LEDs. Each LED is
driven by a separate drive transistor.
LEDs for CMT display are driven with appoximately 5mA each.
LEDs for CMT keymat illumination are driven with approximately 2.5mA each.
CMT LCD
Mechanical structure
LCD includes the frame, LCD cell with driver chip, reflector, adhesive tapes,
and lightguide. The LCD is electrically connected to the UL2 PWB with a FPC
and board–to–board connector.
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4. User Interfaces
The frame includes clips to mechanically attach the display to the UL2 PWB
and also keep LCD cell and lightguide in place.
LCD cell specification
The LCD cell includes the display driver.
PDA LCD Module .
PDA LCD circuit main blocks are LCD glass including drivers, PDA LCD bias
voltage power circuit and a control IC.
Display resolution640 (x3) x 200 dots
Active area107.52 x 33.6
Dot pitch0.168 x 0.168mm
Display modeD–TFD, Color, Transmissive
Frame frequency51.5 Hz typical
The control circuit generates a square wave input to the piezo driver circuit.
This signal is maintained at the resonant frequency of the piezo transformer.
The driver is based around 2 FETs in Push–pull configuration. There is a single
coil between the FETs and the piezo transformer.
Both FETs are turned off while the CCFL is off during dimming (BACKPWM
low).
Page 4 – 16
Figure 3. Backlight Power Supply
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Technical Documentation
The piezo transformer part is soldered onto a FPC with the CCFL.
Piezo transformer characteristicValue
Input voltage8Vrms Max
Output power1 W max
Output voltage200 Vrms min
Output current4.5mA
Operating current1.5mA nominal
Operating frequency130 +/– 10 kHz
The CCFL lamp is 2.6mm outer diameter and 1.8 mm inner diameter Double
tube.
Operating Voltage200 Vrms
Tube current1 mA min , 3mA max
Operating current1.5mA
PDA LCD Power circuit
PDA LCD power circuit generates the bias voltages necessary for the PDA display panel. Block diagram below.
VCC
Flyback Regulator
LCDPWM
Data
Control ASIC
Synchronisation
Swing Mode
Regulator
DY
V0Y
V5Y
VCCY
FRY
YSCL
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XINH
Figure 4. Block diagram of PDA Power Supply
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RAE-3
PAMS
4. User Interfaces
The flyback regulator generates a negative bias voltage (Nominally –12V) from
the battery voltage. The output of the flyback generator is temperature compensated and adjusted under software control.
The control ASIC handles the refresh of data to the PDA display panel and the
generation of synchronisation signals for the swing mode regulator.
Antenna connectors and ground plane
The RF–signal from the external antenna connector/switch on BL8 is fed to the
antenna via a coaxial cable that is led through the hinge. The signal is fed to
the antenna through a coaxial connector and an antenna clip which are placed
on the UL2 PWB.
The UL2 PWB includes the separate ground area that is required by the antenna.
Technical Documentation
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Technical Documentation
QWERTY Keyboard Module UL8
General
UL8 is the combined QWERTY keypad/flex connection module. The base flex
is single–sided, so all the components are on the same side of the flex.
Approximate component placement is shown below:
4. User Interfaces
70 pin connector 5469145
50 pin connector 5469817
Figure 5. Component placement
AF8 PWB
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RAE-3
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4. User Interfaces
AF8 PWB
AF8 is a small additional PWB to achieve ”bulls eye” shaped pads for the earpiece and connection for the battery removal switch. (Check that the RAE-3
software supports the battery removal switch feature.)
The approximate shape of AF8 is shown below.
One 22pF SMD capacitor is assembled to the AF8.
Technical Documentation
Page 4 – 20
Figure 6. AF8 PWB
Issue 1 06/01
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