DEMOBOARD-U3600BM Atmel, DEMOBOARD-U3600BM Datasheet

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DEMOBOARD-U3600BM

Manufacturer Part Number
DEMOBOARD-U3600BM
Description
BOARD DEMO FOR U3600BM
Manufacturer
Atmel
Type
Cordless Phone ICr

Specifications of DEMOBOARD-U3600BM

Contents
Board, Software and Documentation
For Use With/related Products
U3600BM
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
1. Introduction
The U3600BM is a one-chip combo IC (transceiver and baseband part) for cordless
telephone applications up to 50 MHz, but can also be used for other applications such
as toys, wireless keyboards, mouse devices, games, handsets, etc.
This document aims to help designers in their design activities to optimize the design
faster.
The Design Hints include internal block diagrams, programmable registers, register,
bit, oscillator and noise descriptions, as well as the principle of the RSSI function.
A definition of the demo board which can be purchased for different countries, such as
France, China and the U.S., is provided in this document, as well as hints for 27 MHz
applications and how to adjust the VCO3.
U3600BM Design Hints
CT0 ICs
U3600BM
Design Hints
Rev. 4804A–CT0–03/06

Related parts for DEMOBOARD-U3600BM

DEMOBOARD-U3600BM Summary of contents

Page 1

U3600BM Design Hints 1. Introduction The U3600BM is a one-chip combo IC (transceiver and baseband part) for cordless telephone applications MHz, but can also be used for other applications such as toys, wireless keyboards, mouse devices, games, ...

Page 2

ERXHF (R2B2 Mixer1 42 Crystal GNDLO oscillator fLO 43 LO2 fLO VCO3 : LO1 fLO 1 PCLO sin con PDVDD (R3B7) about 10k (capability for discharging VDD) MixerT +45 -45 (2) 2 RFOGND 3 ...

Page 3

M1CP (R6B6 (R6B0) 42 enable internal test-mode GNDLO always zero in application) Mixer1 DV3I0 to DV3I14 (R9B0 to R10B6) 43 FA30 to FA33 LO2 (R11B4 to R11B7) VCO3 (variocap-voltage LO1 to adjust VCO3 44 fLO to correct ...

Page 4

EOSC (R15B6 GNDLO Mixer1 EVCO3 (R15B7) fLO LO2 fLO 43 VCO3 :2 LO1 44 sin con fLO PCLO 1 about 10k SU3 (R15B5) MixerT +45 -45 (2) RFOGND 2 Loop RFO VCO2 filter 3 RFOVB ...

Page 5

EVCO3 EOSC Mixer1 42 GNDLO fLO 43 LO2 fLO VCO3 :2 44 LO1 (3) fLO 1 PCLO sin con about 10k MixerT +45 EVCO2 -45 (2) 2 RFOGND 3 Loop RFO VCO2 filter 4 RFOVB 5 6 ...

Page 6

With the shown components the following level will be generated. Some of the levels are already maximum values and some values on some stages can be higher and are marked with rectangular brackets [..]. (Bias 2 x diodes) (Bias 1.5V) ...

Page 7

Table 2-1. Detailed Register and Register-bit Description Address + Address Bit Register Name R0B0 DA0 R0B1 DA1 R0B2 DA2 R0B3 DA3 R0 R0B4 DA4 R0B5 DA5 R0B6 DA6 R0B7 MUXDA R1B0 Free R1B1 Free R1B2 GDEM R1B3 GEA0 R1 R1B4 ...

Page 8

Table 2-1. Detailed Register and Register-bit Description (Continued) Address + Address Bit Register Name R5B0 Free R5B1 Free R5B2 M12 R5B3 KV21 R5 R5B4 KV22 R5B5 KV23 R5B6 Free R5B7 Free R6B0 TM R6B1 SU1 R6B2 GMOD0 R6B3 GMOD1 R6 ...

Page 9

Table 2-1. Detailed Register and Register-bit Description (Continued) Address + Address Bit Register Name R10B0 DV3I8 R10B1 DV3I9 R10B2 DV3I10 R10B3 DV3I11 R10 R10B4 DV3I12 R10B5 DV3I13 R10B6 DV3I14 R10B7 FA34 R11B0 RA20 R11B1 RA21 R11B2 AMIX1 R11B3 AMIX2 R11 ...

Page 10

Table 2-1. Detailed Register and Register-bit Description (Continued) Address + Address Bit Register Name R15B0 E5K R15B1 E6K25 R15B2 E10K R15B3 E12K5 R15 R15B4 E25K R15B5 SU3 R15B6 EOSC R15B7 EVCO3 3. Explanation of Special Register Bit M1CP Figure 3-1. ...

Page 11

Oscillator and Noise Figure 4-1. Reference frequency PLL VCO2 Frequency comparison 4804A–CT0–03/06 Principle of U3600BM Relaxation-oscillator and Timing (Advantage: adjustment-free and there is no need for an external L/C tank) During this time the oscillator is free running U3600BM ...

Page 12

Figure 4-2. Typical Chinese Transmit Spectrum (China Mobile Channel 17), Carrier = -5.03 dBm Figure 4-3. Typical US Transmit Spectrum (US-2 Mobile Channel 15), Carrier = -4.93 dBm U3600BM 12 4804A–CT0–03/06 ...

Page 13

Principle of RSSI Function, RSSI Diagrams Figure 5-1. RSSI Investigation to Measure Receive Level with a Microcontroller Solution 1 Voltage dependent on the average of ones and zeros. This voltage is measured by an A/D converter and represents receive ...

Page 14

Mixer-1 10 MHz Mixer-2 450 kHz Stage 1 UIN filter filter Stage Stage only V A RC1 RC2 RC1 RC2 12.5 dB each = VA - 2Ube Random pulse train ...

Page 15

Figure 5-3. DACO Output Unfiltered 127 63 DACO output fully HIGH DACO output jumps randomly between GND and VBAT DACO output fully LOW 0 Figure 5-4. DACO Output Level Dependent on Antenna Input Level 4.000 3.500 3.000 2.500 2.000 1.500 ...

Page 16

Figure 5-5. Filtered DACO Output Dependent on Reference Value 4 3.5 3 2.5 RF input signal constant DAC is varied 2 1 U3600BM 16 Y U3600BM filtered DACO output voltage dependent on D/A converter reference ...

Page 17

DACO output fully HIGH DACOvalue1 DACOvalue2 DACO output jumps DACOvalue3 randomly between GND and VBAT DACOvalue4 DACOvalue5 DACO output fully LOW Equivalent pulse-train high DACOvalue1 75% DACOvalue2 25% 50% 50% DACOvalue3 75% DACOvalue4 25% DACOvalue5 low 127 ...

Page 18

... Short Demo Board Description Atmel provides a standard U3600BM demo board PCB which can be assembled as a base board or a mobile board depending on selection of base/mobile (handset) components. The board is a fully working CT0 base station or mobile (handset) receiver/transmitter with the following configuration: • Connector for antenna • ...

Page 19

Figure 6-1. Demo Board 1.5 k 1.5 k 4804A–CT0–03/06 Parallel Port Connector Receive DUPLEX-FILTER SFB4814 Mobile (hand) U3600BM CTC COUT LIMIN TXO IN1 OUT VDD VBATA MLF LFGND MODIN AGNDA VBAT VBIAS AGNDB Transmit 19 ...

Page 20

Board Photos Figure 7-1. U3600BM Top View Figure 7-2. U3600BM Bottom View U3600BM 20 4804A–CT0–03/06 ...

Page 21

Varicap voltage Maximum possible voltage (but not recommended) (can not reach limit of 2.5V) 2 Typical voltage range measured as an example 1 China demo board base is 0.68 V (channel-1) to 1.24 V (channel-20) ...

Page 22

Extraction of China-Base application DLO2 LL01 150nH BZT55C51 RLO2 RLO1 24k 56k BZT55C51 CLO3 CLO2 68nF 10nF BZT55C51 DLO2 External VCO3 components DLO2 LL01 150nH BZT55C51 BZT55C51 BZT55C51 DLO2 PCLO 1 Phase comparato fRef3 r MIX1O 39 MIXER-1 MIX1IN1 40 ...

Page 23

Not assembled Shorted VBAT Not used Component dependent on base/mobile and country CRE8 R33 CRE4 LRE1 RIIMP1 100 nF 230 (290 nH) (33 pF) COSC1 CRE5 CRE6 10nF RRE3 ANT R32 6.8 pF XT1 ...

Page 24

Not assembled Shorted VBAT Not used Component dependent on base/mobile and country CRE8 SK107M1-AO-10 R33 (desensitation) 10.7 MHz-Filter CRE4 LRE1 RIIMP1 100 nF (200 nH) (33 pF 180 pF COSC1 CRE6 CRE5 10nF RRE3 ANT R32 6.8 pF ...

Page 25

... Please note that the US demo board is Atmel’s standard demo board. Below, you will find the list of components needed. The US demo board listing is also representative of the other country applications, however, changes to values of components and other minor modifications may be possible. Table 8-1. ...

Page 26

Table 8-1. Component RTR4 RLO1 RLO2 RRE1 RRE2 RRE3 RRE4 RRE5 Capacitors CCOIN1 CCT1 CVDD1 COSC1 CIFIN1 CIMP2 CIMP4 CETC1 CRECO1 CINTF1 CMIC1 CMIC2 CELMI1 CLIM1 CLIM2 CTXO1 CTXO2 CTXO3 CTXDA2 CMOD1 CMLF1 CMLF2 ...

Page 27

Table 8-1. Component CTR2 CTR3 C7 CLO1 CLO2 CLO3 CRE1 CRE2 CRE3 CRE4 CRE5 CRE6 CRE7 CRE8 CRFO1 Coils LTR1 LLO1 LRE1 Transistors T1 T2 TTR1 Diodes DD1 DD2 DC1 DC2 DSCL1 DSDA1 ZDINTF3 ZDINTF2 ZDDACO1 DLO1 DLO2 ICs IC1 ...

Page 28

Not assembled Shorted VBAT Not used Component dependent on base/mobile and country CRE8 SK107M1-AO-10 R33 10.7 MHz-Filter CRE4 LRE1 CRE5 RIIMP1 CRE6 50 nH 100 nF 10nF R32 COSC1 180 pF ANT 6.8 pF RRE3 XT1 C31 ...

Page 29

In our prototpye we used air-coils CTR3 with three windings and a diameter 10nF of about 0.7 mm. The air-coils are in resonance with the transmit frequency. RFOGND Due to the priciple of our transmitter stage, which is adjustment free, ...

Page 30

Table 8-2. Typical results for China demo board: Transmit power: Sensitivity tr-on: U3600BM 30 China Setup Base Station Reg for Chinese Base Station 00000000 01100100 01111101 00000001 00000000 00110000 10110100 00100011 10110101 10001000 10010111 00010000 01100101 11100000 ...

Page 31

Not assembled Shorted VBAT Not used Component dependent on base/mobile and country CRE8 R33 CRE4 CRE5 LRE1 RIIMP1 100 nF CRE6 230 nH 26,...MHz 10nF COSC1 150 pF (37 ANT R32 6.8 pF RRE3 XT1 CIMP2 11.15 ...

Page 32

Not assembled Shorted VBAT Not used Component dependent on base/mobile and country CRE8 R33 10.7 MHz-Filter CRE4 CRE5 LRE1 RIIMP1 100 nF CRE6 220 nH 10nF COSC1 150 pF 41,...MHz (37 ANT R32 6.8 pF RRE3 XT1 CIMP2 33 k ...

Page 33

Table 8-3. Table 8-4. Typical results for France demo board: Transmit power: Sensitivity: 4804A–CT0–03/06 France Setup Mobile/Handset Reg for France Handset 00000000 01111000 01111101 00000001 00000000 00101000 10010100 00001001 10011111 00110000 00010111 11000001 01001111 11100000 11100000 11000010 ...

Page 34

Demonstration Software Figure 9-1. Demonstration Software Country setting field (data is taken from a default database; predefined bits are displayed light brown on the right hand side) Send country setting, if modified (for internal use only) Send default country ...

Page 35

... Installation Procedure For demonstration of these integrated circuits, use the U3600BM demo board. As the U3600BM is controllable via a serial bus (to load all the internal registers), Atmel provides demonstration and development software. The software is written in Visual Basic and replaces the previously used microcontroller. Please note that the Visual Basic program controls all of the U3600BM's registers, but it does not work as a complete telephone processor to handle all protocols needed to communicate between base station and handset or vice versa ...

Page 36

... The corresponding data for each country is predefined by Atmel to provide maximum perfor- mance. The country-specific data are stored in a default database and will be used according to the Country selection ...

Page 37

... Bits with a grey background are application-specific bits, and can be modified depending on the application environment. Bits with a light-brown background are country-specific predefined data and should not be modi- fied because they have already been optimized by Atmel R15 These buttons are used to open a register window for bit-wise modification of the specific register ...

Page 38

This button opens a window to adjust ear piece gain for adapting acoustic to electric parts. 6. AntiBacklash Opens a window to tune antibacklash of VCO2. Antibacklash bits (two bits) are set to zero and should not be changed by ...

Page 39

Not assembled Shorted VBAT Not used Component dependent on base/mobile and country CRE8 R33 ANT CRE4 CRE5 RIIMP1 LRE1 CRE6 100 nF 290 nH 10nF COSC1 120 pF RRE3 R32 6.8 pF XT1 11.15 MHz CRE7 C31 ...

Page 40

Table 20-1. 21. Demo Board and PC Connection for Demonstration Figure 21-1. PC Connection to Demo Board U3600BM 40 Reg for 27 MHz Application 27-MHz Setup Transmit 00000000 10000100 00111101 00000000 00000000 00100000 10100000 00000010 01011000 10001100 ...

Page 41

Table 21-1. Pin Figure 21-2. Connection the Demo Board to the PC 25-pin pc connector (Printer port) Pin No. Arrangement Transfer of data occurs when software base mode as well as in handset ...

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... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...

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