Silicon Laboratories Si4827-DEMO User Manual Download Page 3

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Si4827-DEMO

Rev. 0.1

Power:

BAT1: 2 cells AAA battery compartment

Audio Connectors:

J5: Mono audio headphone output

Antenna Selections:

AM antenna: Ferrite stick antenna for AM

J6: SMA connector for AM conductive test

S11: AM antenna selector

J1: BNC connector for FM/ SW conductive test or FM whip

S12: FM antenna selector

Radio Band Selection:

The DEMO board provides two methods for selecting the radio band: one is to use the slide switch S2; the other is
to use the push button, POWER/BAND. S14 determines which method is in use.

S14:

1-2:

SMA for AM Conductive Test (J6)

2-3:

AM ferrite antenna

1-2: FMHP ANT (J5)
2-3: FM BNC (J1)

2-3: Use slide switch to select band
1-2: Use push button to select band

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Summary of Contents for Si4827-DEMO

Page 1: ...9 9 MHz SW7 11 45 12 25 MHz DEMO Board Default SW8 11 6 12 2 MHz SW9 13 4 14 2 MHz DEMO Board Default SW10 13 57 13 87 MHz SW11 15 15 9 MHz DEMO Board Default SW12 15 1 15 8 MHz SW13 17 1 18 MHz DEMO Board Default SW14 17 48 17 9 MHz SW15 21 2 22 MHz DEMO Board Default SW16 21 45 21 85 MHz Support wider FM SW band range Twelve positions slide switch or one push button for selecting different band ...

Page 2: ...meters to do the frequency tuning It provides a complete portable analog tune analog display AM FM SW radio design The LCD displays the tuning information The Si4827 DEMO is designed with 1 layer PCB allowing the lowest cost without sacrificing the RF performance The DEMO board works with two AAA batteries and working voltage down to 2 0 V 3 Description Figure 1 and Figure 2 shows the physical lay...

Page 3: ...ip S12 FM antenna selector Radio Band Selection The DEMO board provides two methods for selecting the radio band one is to use the slide switch S2 the other is to use the push button POWER BAND S14 determines which method is in use S14 1 2 SMA for AM Conductive Test J6 2 3 AM ferrite antenna 3 2 1 1 2 3 1 2 FMHP ANT J5 2 3 FM BNC J1 1 2 3 2 3 Use slide switch to select band 1 2 Use push button to ...

Page 4: ...ration 20 dBµV 2 FM5 W 76 108 MHz N 64 87 MHz De emphasis 75 µs ST indication 6 dB separation 20 dBµV 3 AM1 520 1710 kHz 10 kHz spacing 4 AM2 522 1620 kHz 9 kHz spacing 5 SW1 W 3 2 7 6 MHz N 5 6 6 4 MHz 6 SW3 W 3 2 10 0 MHz N 6 8 7 6 MHz 7 SW5 W 5 9 18 0 MHz N 9 2 10 0 MHz 8 SW7 W 7 0 16 0 MHz N 11 45 12 25 MHz 9 SW9 W 7 0 23 0 MHz N 13 4 14 2 MHz 10 SW11 W 9 0 22 0 MHz N 15 15 9 MHz 11 SW13 W 9 5...

Page 5: ...mode Radio parameters will be saved to MCU DE SPC None FM mode Change De emphasis between 50 µs and 75 µs AM mode Change channel space between 9 kHz and 10 kHz BASS TMR Enter or quit time setting menu Decrease Bass Treble level by 1 step TREBLE AL Enable or disable the alarm function enter or quit alarm setting menu Increase Bass Treble level by 1 step UP VOL Hold Time 1s In setting menu change th...

Page 6: ...current parameter automatically In radio working mode decrease volume level automatically until to minimum W N BAND None FM SW mode change band range between wideband and narrow band SETTING Hold Time 1s None In radio setting menu change the current item by one step per each press Hold Time 1s None Quickly return to FM working mode Table 1 Key Function Description Button Mode Time Mode FM AM SW Ra...

Page 7: ...Channel space 9 or 10 kHz Default 9 kHz Tone VOL mode a d Default d Tuning preference a b Default a Tuning preference a b Default a Notes 1 Tone VOL mode has four modes Bass treble mode no digital volume control fixed volume level at 59 Digital volume mode no bass treble effect volume levels from 0 to 63 Mixed mode 1 bass treble digital volume coexist volume levels from 0 to 63 scale to 0 59 Mixed...

Page 8: ... TREBLE AL button to enable or disable the alarm function and enter the setting menu automatically when the alarm is enabled Once you have entered the setting menu the default is to set the minute item first Press this button again to select the hour item The selected item flashes 2 While the selected item is flashing press the DOWN VOL and UP VOL button to set the desired time 3 When you have fin...

Page 9: ...1s or when the alarm time is reached the device will enter FM AM SW Mode 3 Use slide switch S2 or press the POWER BAND push button to select the desired band 4 Refer to Section 4 2 1 MCU Setting Band Property or section 4 2 2 MCU Setting Radio Working Mode to reconfigure the band property or radio working mode if necessary 5 Rotate the tuning wheel and find the desired radio station with the help ...

Page 10: ... Space 9 kHz or 10 kHz Figure 4 Setting Menu 4 2 2 MCU Setting Radio Working Mode The host MCU can set the radio working mode The working modes include Tone volume mode item 3 in setting menu Tuning preference only for FM and SW item 4 in setting menu To set radio working mode follow these procedures 1 Press the SETTING button to enter item 3 The LCD displays the item number st3 for 1 second then ...

Page 11: ...X7R 47 µ 12 1 C18 CAP SM 0603 COG 330 p 13 2 C23 C27 CAP SM 1210 X7R 220 µ 14 2 C14 C25 Electrolytic capacitor 100 µ 4 V 15 1 C3 Electrolytic capacitor 220 µ 4 V 16 1 R25 RES SM 0603 0 R 17 1 R27 RES SM 0603 100 R 18 2 R5 R6 RES SM 0603 2 k 19 1 R32 RES SM 0603 10 R 20 1 R3 RES SM 0603 10 k 21 1 R41 RES SM 0603 120 k 22 1 R22 RES SM 0603 12 k 23 2 R1 2 RES SM 0603 1 M 24 2 R4 R31 RES SM 0603 1 k 2...

Page 12: ... 1 J5 Stereo earphone jack with switch 3 5 mm 52 1 L1 RES SM 0603 0R 53 1 L2 IND SM 0603 270 nH 54 1 L3 IND SM 0603 120 nH 55 2 TP1 TP3 CONN TH 1x2 HDR CONN TH 1x2 HDR 56 1 LCD1 LCD LCD 57 1 J1 BNC VERTICAL BNC for FM testing 58 1 J6 SMA VERTICAL SMA for AM testing 59 1 ANT1 AW ferrite stick antenna 220 µH 60 1 BAT1 BATTERY BOX AAA 2 SIZE 61 3 S11 S12 S14 One pole two throw switch 62 1 S2 Single p...

Page 13: ... J6 D2 BAV99 C34 33p C1 0 1u R27 100R R33 20k 1 R35 20k 1 R36 33k 1 C13 47u R43 30k 1 R44 47k 1 C14 100u 4V L1 0R 120nH C4 10u C12 10u VR2 A 1 2 3 J5 C24 0 1u R20 6k8 R22 12k B4 2k5 100M B5 2k5 100M 1 IN1 2 IN2 3 SHUTDOWN 4 GND 5 VDD 6 VO3 7 VO2 8 VO1 U2 LM4910MA C10 100p C11 150p R16 2k2 C18 330p C23 220u C27 220u C8 100p B1 NC C25 100u 6 3V Y1 32 768KHz C28 22p C29 22p R46 4 7M R3 10k R21 NC S11...

Page 14: ... SEG12 K12 27 SEG21 28 SEG22 29 SEG23 30 SEG24 IOA1 31 SEG25 IOA2 32 SEG26 IOA3 33 SEG27 IOA4 34 SEG28 IOB1 ELC 35 SEG29 IOB2 ELP 36 SEG30 IOB3 BZB 37 SEG31 IOB4 BZ 38 SEG32 IOC1 KI1 39 SEG33 IOC2 KI2 40 SEG34 IOC3 KI3 41 SEG35 IOC4 KI4 42 RESET 43 INT 44 TEST U3 Y2 32 768KHz C32 22p C35 22p C37 0 1u C38 0 1u C40 0 1u Q3 2N3906 R1 1M R2 1M C41 0 1u S1 KEY2_SM RESET C WIND95TEMP6200 LIB C ORCAD7 0C...

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Page 16: ... are generally not intended for military applications Silicon Laboratories products shall under no circumstances be used in weapons of mass destruction including but not limited to nuclear biological or chemical weapons or missiles capable of delivering such weapons Trademark Information Silicon Laboratories Inc Silicon Laboratories Silicon Labs SiLabs and the Silicon Labs logo CMEMS EFM EFM32 EFR...

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