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Programmes After Market Services NHE 8/9 Series Transceivers
Chapter 4 Uif Module
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NHE 8/9 Uif Module
PAMS Technical Documentation
CONTENTS Page No
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Functional Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power on/off key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Keypad switch matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Liquid crystal display module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Keypad back light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LCD back light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Buzzer driver circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Microphone and speaker connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Board to board connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External Signals and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Uif Module GU9 _08 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Uif Module GU9_10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 45 45 46 47 47 47 47 48 48 48 49 49 49 412 412 414
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List of Figures Page No
Figure 1. Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2. Keypad switches Simplex or FlatJ . . . . . . . . . . . . . . . . . . . . . Figure 3. System board connection pads, order of numbering. . . . . . . . . Figure 4. LCD module identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note: In printed manuals all A3 drawings are located at the back of the binder.
4 5 4 6 410 411
GU9 _08 Figure 5 UIF Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 6 UIF Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GU9 _10 Figure 7 UIF Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 8 UIF Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4A1 4A2 4A3 4A4
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Introduction
This document describes the User Interface Module GU9. The GU9 module is intended for use in the GSM and PCN version of the NHE8/9 product, that is FLATJ and Simplex versions.
Functional Circuit description
The following sections of circuitry are included on the PCB: Power on/off key. Keypad switch matrix. Liquid Crystal Display Module and peripheral circuitry Keyboard & Display back light circuits Buzzer driver circuit and connection pads Pads for microphone and speaker connection A method of connection between the user interface PCB and the main system board The functions are described in details below. See UIF Schematic on page NO TAG for further information. VL VBatt
LCD Lights
Key Lights
Buzzer driver
LCD
GND
Figure 1. Power Distribution
Power on/off key
The power key, S422, is connected directly to the PSCLD via the line 'XPWRON' and to 'ROW0' trough the diode V418. When activated both lines are pulled low. When the key is pressed, its row will go low, but the value of the row will not be changed when the column outputs are set high at the start of the scanning process. This fact uniquely identifies the key. A diode is necessary to prevent key presses on any switches connected to ROW0 from turning on/off the phone. This also protect the 3V baseband against the pull up of XPWRON to VBATT inside PSCLD The power key,S422, is handled as any other SMD component, and is placed in the reflow process. issue 2 11/97
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Keypad switch matrix
The keypad consists of a matrix of 20 switch domes,in the keypad array (0 9, #, *, SEND, END, UP, DOWN, CLEAR, ALPHA, SOFTLEFT and SOFTRIGHT). These are the references on the schematics. The functionality of the keys are determined via software and is different from the 3810 version (HD844 MCUSW) and the 3110 version (HD845 MCUSW). The schematics description corresponds to the key pad functionality in 3810 version.
CLEAR
X
1
SOFT
X
DOWN 3
SOFTLEFT CLEAR
UP
SOFTRIGHT ALFA END
UP
DOWN SEND
X
X
2 5
1
2
3
4
6
4
5
6
7
8
9
7
8
9
*
0
#
*
0
#
3110 Keypad, X: No function Figure 2. Keypad switches
3810 Keypad
The keypad keys are connected in a 6 by 4 matrix. The 4 outputs (columns) are normally held at 0V by the ASIC. The 5 rows are also connected to the ASIC when any of these inputs goes low (there are pullups inside the ASIC) the ASIC interrupts the MCU, which then commences scanning. This involves taking all the columns high then taking each individual column low in turn. When a low is received on a row input, it can be deduced which key is pressed from the row input number and the column output which is currently low.
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ROW5 is also used as an output for the command/data selection on the LCD driver. A resistor, R406, is necessary to prevent excess current flow from the row output in case a key is pressed during the time that the LCD is being accessed. The keypad consists of gold flashed PCB tracks above which are placed metal keydomes. The keydomes themselves are supplied attached to a tape all the domes in the key array are therefore placed in one operation.
Liquid crystal display module
The display driver is connected to the system board with a serial data bus. Data input is enabled when CS1 (LCDENX) is LOW. A0 (ROW5) is control/display data flag input. Incoming data is control data when A0 is LOW, and display data when A0 is HIGH. Serial data is read on the rising edge of SCL. On every eight clock pulse, the data is transferred from the shift register and processed as 8bit parallel data. A0 is read on the rising edge of every eight clock signal.
Back light
LEDs are used as backlights for the keymat and LCD, and are driven by constant current sources. Constant current sources ensure constant brightness from the LEDs over the full range of battery voltages (the LEDs are powered straight from VBatt to lighten the load on the regulated supply). Keypad back light The drive circuits for the keypad LEDs consist of 2 constant current sources,using two BCX19 transistors wired as simple constant current sinks. Both transistors supply six LED`s, so the keyboard is illuminated with 12 LED`s. The bases of the two transistor are wired together and controlled by MCU via the line 'KEYLIGHT'. The led current is fixed by the values of R401 and R402 and the ratio of R411 to R413. LCD back light The display illumination operates in a similar way as the keyboard drivers, but only one transistor (V402) is used to drive six leds. The current in this case is defined by the value of R414 and the ratio of R412 to R404. The constant current source is controlled from an MCU output port via the line 'LCDLIGHT'. The PCB is gold plated under the LEDs to improve reflection of light emitted towards the PCB.
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Buzzer driver circuitry
The buzzer is mounted in the A cover, and connected to the UI PCB using spring contacts mounted on the transducer. When the phone is assembled the springs press upon pads placed on the UI PCB . The buzzer is a Citizen CB09AS01 device. It is driven from NPN transistors V403, V425 by a PWM output from the CODEC via the signal line 'BUZZER'. The ringing volume is controlled by pulse width modulation. The diode V413 prevents damage to the transistors when they switch off, absorbing the stored energy in the buzzer inductance and suppressing large positive going spikes on the transistor collectors. The buzzer is driven directly from VBatt in order to have sufficient voltage to drive sufficient current trough the buzzer.
Microphone and speaker connection
The microphone and earpiece are mounted in the A cover, and connected to the UI PCB using spring contacts mounted on the transducers which press upon pads placed on the UI PCB when the phone is assembled. The connections are routed directly to the board to board connector pins 19 and 20. The microphone connections are routed directly to the board to board connector pins 2 and 3. EMC filtering is provided using ceramic capacitors.
Board to board connection
A 32 pin spring connector placed on the system board mates with 32 gold plated pads on the lower side on the UIPCB. Refer to Table 4 for pin numbers and signal names.
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Technical Specifications
Table 1. List of Connectors Connector Name H400 Display Module Connector X400 UIF Connector Notes FPC footprint for LCD Module B to B connector . 32 connection pads.
DC Characteristics
Table 2. Supply Voltages Pin / Conn. 5 / X400 VL Symbol Minimum 3.0 Typical / Nominal 3.16 Maximum 3.3 1 15 / X400 VBatt 5.3 6.0 9.3 200 Unit V mA V mA TBV TBV Notes
Table 3. Current consumption @ VBatt VBatt (V) 5.3 6.5 8.8 Keylight (mA) 49.5 52.4 58.5 LCDlight (mA) 22.4 23.3 24.9 103 123 163 Buzzer (mAac) Notes Buzzer current measured with pulse ratio d ith l ti 50/50
External Signals and Connections
Table 4. UI Module Main Connector X400 Pin / Conn. 2 / X400 3 / X400 4,7,11,31/X 400 5 / X400 6 / X400 Line Symbol MICP MICN (AGND) GND VL 3.0 Minimum 0 0 Typical / Nominal 2 2 0 3.16 0 3.16 0 3.16 0 3.16 3.3 0.9 3.3 0.2 3.3 0.2 3.3 Maximum 12.5 12.5 Unit mVAC mVAC V V V V V V V V Keymat backlights OFF Keymat backlights ON LCD backlights OFF LCD backlights ON Notes Positive Mic terminal Negative Mic terminal Digital Ground Logic voltage Reset for display driver
SYSRESET 0 X 2.4 KEYLIGHT 0 2.8
8 / X400
9 / X400
LCDLIGHT
0 2.8
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Table 4. UI Module Main Connector X400 (continued) Pin / Conn. 10 / X400 Line Symbol BUZZER Minimum 0 2.4 12 / X400 GENSCLK 0 2.4 13 / X400 GENSD 0 2.4 14 / X400 LCDENX 0 2.4 15 / X400 18 / X400 VBatt XPWRON 5.3 5.3 0 19 / X400 20 / X400 2025 / X400 2629 / X400 EARN EARP ROW(0:5) 0 0 0 2.4 COL(0:3) 0 2.4 14 14 0 3.16 0 3.16 Typical / Nominal 0 3.16 0 3.16 0 3.16 0 3.16 6.0 6.0 Maximum 0.6 3.3 0.6 3.3 0.6 3.3 0.9 3.3 9.3 9.3 0.4 220 220 0.5 3.3 0.5 3.3 Unit V V V V V V V V V V V mVAC mVAC V V V V Notes PWM signal for BuzzerLOW PWM signal for BuzzerHIGH Display data clk LOW Display data clk HIGH Display data line LOW Display data line HIGH Display driver Enable Display driver Disable Battery voltage Power key free, pullup in PSCLD Power key pressed Negative Earpiece Terminal Positive Earpiece Terminal LCD driving and keyboard b d ROW reading di Column scan for key matrix ti
17 1 X400
32 16
Figure 3. System board connection pads, order of numbering.
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E879 623A0
Pin 1
Product line Year: 6 : '96 7: '97 model name Day of week A : monday
week 23 : week 23
Figure 4. LCD module identification
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Parts List
Uif Module GU9 _08
EDMS pn 0200886 Issue 3.6
Item R424 R404 R411 R412 R413 R406 R421 R425 R407 R415 R419 R401 R402 R414 R416 C400 C401 C402 C403 C404 C409 C420 C421 C432 C433 C410 C411 C412 C413 C414 C415 L401 L402 V413 V418 V402 V404 V405
Code 1430015 1430043 1430043 1430043 1430047 1430065 1430065 1430065 1430087 1430111 1430131 1430163 1430163 1430163 1430296 2310408 2310408 2310408 2310408 2310408 2312293 2312293 2312293 2320546 2320546 2320546 2320546 2320546 2320546 2320546 2320546 3645125 3645125 4110070 4110070 4200836 4200836 4200836
Description Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Chip resistor Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Ceramic cap. Chip coil Chip coil DiodeBAS16W DiodeBAS16W Transistor Transistor Transistor
Value 470 2.2 k 2.2 k 2.2 k 3.3 k 10 k 10 k 10 k 100 k 1.0 M 464 k 33 33 33 560 k
Type
5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 1 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 5 % 0.063 W 0603 2 % 0.063 W 0603 Y5 V 1206 Y5 V 1206 Y5 V 1206 Y5 V 1206 Y5 V 1206 Y5 V 1206 Y5 V 1206 Y5 V 1206 27 p 5 % 50 V 0402 27 p 5 % 50 V 0402 27 p 5 % 50 V 0402 27 p 5 % 50 V 0402 27 p 5 % 50 V 0402 27 p 5 % 50 V 0402 27 p 5 % 50 V 0402 27 p 5 % 50 V 0402 12 n 5 % Q=8/100M 0603 12 n 5 % Q=8/100M 0603 75 V 0.25 A SOT323 75 V 0.25 A SOT323 BCX19 npn 50 V 0.5 A SOT23 BCX19 npn 50 V 0.5 A SOT23 BCX19 npn 50 V 0.5 A SOT23
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V425 V403 H400 V401 V410 V411 V412 V419 V420 V406 V408 V409 V414 V416 V417 V421 V422 V423 V424 V427 V428 S422
4200836 4207461 4850029 4860005 4860005 4860005 4860005 4860005 4860005 4864389 4864389 4864389 4864389 4864389 4864389 4864389 4864389 4864389 4864389 4864389 4864389 5200120 9467014 9854161
Transistor BCX19 npn 50 V 0.5 A SOT23 Transistor BC86825 npn V SOT89 LCD display module 83x41+driver+tab+icon Led Green 0603 Led Green 0603 Led Green 0603 Led Green 0603 Led Green 0603 Led Green 0603 Led 0603 Led 0603 Led 0603 Led 0603 Led 0603 Led 0603 Led 0603 Led 0603 Led 0603 Led 0603 Led 0603 Led 0603 Push button switch 6.4x5.2 smd Lightguide assy dmc00787 PCB GU9 154.8X135.9X0.8 D 3/PA
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Uif Module GU9_10
EDMS pn 0200886 Issue 3.8
Item R401 R402 R406 R407 R411 R412 R413 R414 R415 R416 R419 R425 C400 C401 C402 C403 C404 C409 C412 C413 C414 C420 C421 H400 V401 V402 V404 V405 V406 V408 V409 V410 V411 V412 V413 V414 V416 V417 V418
Code 1430163 1430163 1430047 1430087 1430041 1430041 1430023 1430163 1430111 1430296 1430131 1430065 2310408 2310408 2310408 2310408 2310408 2312293 2320546 2320546 2320546 2312293 2312293 4850029 4860005 4200836 4200836 4200836 4864389 4864389 4864389 4860005 4860005 4860005 4110070 4864389 4864389 4864389 4110070
Description
Value
Type
Chip resistor 33 5 % 0.063 W 0603 Chip resistor 33 5 % 0.063 W 0603 Chip resistor 3.3 k 5 % 0.063 W 0603 Chip resistor 100 k 5 % 0.063 W 0603 Chip resistor 1.8 k 5 % 0.063 W 0603 Chip resistor 1.8 k 5 % 0.063 W 0603 Chip resistor 820 5 % 0.063 W 0603 Chip resistor 33 5 % 0.063 W 0603 Chip resistor 1.0 M 5 % 0.063 W 0603 Chip resistor 560 k 2 % 0.063 W 0603 Chip resistor 464 k 1 % 0.063 W 0603 Chip resistor 10 k 5 % 0.063 W 0603 Ceramic cap. Y5 V 1206 Ceramic cap. Y5 V 1206 Ceramic cap. Y5 V 1206 Ceramic cap. Y5 V 1206 Ceramic cap. Y5 V 1206 Ceramic cap. Y5 V 1206 Ceramic cap. 27 p 5 % 50 V 0402 Ceramic cap. 27 p 5 % 50 V 0402 Ceramic cap. 27 p 5 % 50 V 0402 Ceramic cap. Y5 V 1206 Ceramic cap. Y5 V 1206 LCD display module Led Green 0603 Transistor BCX19 npn 50 V 0.5 A SOT23 Transistor BCX19 npn 50 V 0.5 A SOT23 Transistor BCX19 npn 50 V 0.5 A SOT23 Led 0603 Led 0603 Led 0603 Led Green 0603 Led Green 0603 Led Green 0603 DiodeBAS16W 75 V 0.25 A SOT323 Led 0603 Led 0603 Led 0603 DiodeBAS16W 75 V 0.25 A SOT323
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V419 V420 V421 V422 V423 V424 V425 V427 V428 S422 P001
4860005 4860005 4864389 4864389 4864389 4864389 4200836 4864389 4864389 5200120 9854161 9467014
Led Green 0603 Led Green 0603 Led 0603 Led 0603 Led 0603 Led 0603 Transistor BCX19 Led 0603 Led 0603 Push button switch PC board Lightguide assy
npn 50V 0.5A
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