Si4840-DEMO Silicon Labs, Si4840-DEMO Datasheet
Si4840-DEMO
Specifications of Si4840-DEMO
Related parts for Si4840-DEMO
Si4840-DEMO Summary of contents
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... Si4840/44 D EMO 1. Features ATDD (analog tune and digital display) FM/AM/SW radio Worldwide FM band support from 64 to 109 MHz with 5 default sub-bands: FM1 87–108 MHz (Demo Board Default) FM2 86.5–109 MHz FM3 87.3–108.25 MHz FM4 76– ...
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... Si4840/44-DEMO 2. Overview This manual describes the operation of the Silicon Labs Si4840/44-DEMO board, Rev 1.3, June 30, 2011. The Silicon Laboratories Si4840/44 DEMO board is designed with the 24-pin SSOP-packaged Si4840/44 chip, the revolutionary single chip AM/FM/SW receiver that integrates everything from antenna output to audio input and allows use of common and economical potentiometers to do the frequency tuning ...
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... Figure 2. Si4840/44-DEMO Board Bottom Side Power: BAT1: 2 cells AAA battery compartment Audio connectors: J5: Stereo audio headphone output Antenna selections: AM antenna: Ferrite stick antenna for AM J6: SMA connector for AM conductive test S11: AM antenna selection 1-2: SMA for AM Conductive Test (J6) 2-3: AM ferrite antenna ...
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... Si4840/44-DEMO S12: FM antenna selection 1-2 BNC (J1) 2-3 HP ANT (J5) Radio Band selection: The Demo board provides 2 methods to select the radio band. One is to use the slide switch (S2); the other is to use the POWER/BAND push button. S14 determines which method is in use. ...
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... AM1 (520–1710 kHz), 10 kHz spacing 4: AM2 (522–1620 kHz), 9 kHz spacing 5: SW1 (5.6–6.4 MHz) 6: SW3 (6.8–7.6 MHz) 7: SW5 (9.2–10.0 MHz) 8: SW7 (11.45–12.25 MHz) 9: SW9 (13.4–14.2 MHz) 10: SW11 (15–15.9 MHz) 11: SW13 (17.1–18 MHz) 12: SW15 (21.2–22 MHz Rev 0.1 Si4840/44-DEMO ...
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... Si4840/44-DEMO Human Interface: There are 8 keys for controlling the demo board as shown below. TREBLE/AL SETTING Each key can have a different function under each operating condition: Time mode: Radio function is disabled. LCD displays time. Buttons can be used to set time, alarm, etc. ...
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... MONO/ST Hold Time < 1s SETTING Hold Time > 1s Si4840/44-DEMO Time Mode FM/AM/SW Radio Mode Tuner Off In radio setting menu, change the current parameter In radio working mode, decrease volume level auto- FM mode: change between forced mono audio and ...
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... Si4840/44-DEMO Table 2. Radio Configuration Parameters FM parameter Bass/Treble: 0-8 Default: 4 Digital Volume: 0-63 Default: 63 Band Top: Max 109 MHz Default: 108 MHz Band Bottom: Min 64 MHz Default: 87.5 MHz Band Range: Max 22 MHz De-emphasis µs Default: 75 s Blend mono: 0-127 dBµV Default: 8 dBµV Blend stereo: 0-127 dBµ ...
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... The tuning preference of SW mode has 2 selections: Preference 1: When tuning to adjacent channels, the volume level decreases by 2 dB. Preference 2: When tuning to adjacent channels, the volume level remains unchanged. There is no tuning preference selection for AM mode. Si4840/44-DEMO Rev 0.1 9 ...
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... Si4840/44-DEMO 4. Operation The Si4840/44-Demo Board, a complete analog tune and digital display radio, provides two major modes of operation: Time Mode and FM/AM/SW Radio Mode. 4.1. Time Mode Put 2 AAA batteries into the battery compartment. The board will automatically enter Time Mode and display the time ...
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... For FM listening, the earphone cable must be connected to the board when S12 is set to HP ANT or an external antenna must be connected to the BNC connector when S12 is set to BNC. For AM listening, the ferrite antenna must be connected to the board and the S11 is set to Ferrite before turning on the radio or switching the band to AM. Si4840/44-DEMO Rev 0.1 11 ...
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... Si4840/44-DEMO 4.2.1. MCU Setting Band Property The demo board provides the function that the band property can be set by MCU. The band property includes: Band top Band bottom Blend mono (only for FM) Blend stereo (only for FM) Blend separation (only for FM) ...
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... Repeat steps 1 and 2 to set the tuning preference by setting item 7. 4. When the radio working mode is set, the MCU automatically quits the setting menu if there is no operation within 3 seconds. 5. Press the MONO/ST button to select forced mono audio or ST audio in FM mode when necessary. Si4840/44-DEMO Rev 0.1 13 ...
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... Bill of Materials ATDD AM/FM/SW receiver IC Si484x with external 32.768 kHz crystal oscillator support LM4910MA Audio Amplifier IC TM8795 MCU See Table 3 for details. Table 3. Si4840/44-DEMO Board Bill of Materials Rev. 1.3 Item Qty Reference 1 12 C1-2, C6, C19, C24, C37-42, C44 2 2 C5, C36 ...
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... Table 3. Si4840/44-DEMO Board Bill of Materials Rev. 1.3 (Continued) Item Qty Reference 25 1 R13 R16, R18 28 1 R46 29 2 R19- R21 R29 33 9 R9-12, R14-15, R28, R33, R35 34 1 R43 35 1 R36 R44 ...
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... Si4840/44-DEMO Table 3. Si4840/44-DEMO Board Bill of Materials Rev. 1.3 (Continued) Item Qty Reference LCD1 ANT1 59 1 BAT1 60 4 S11- S3- TP3 65 1 VR1 66 1 VR2 16 Description IND,SM,0603 LCD BNC VERTICAL ...
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... VCC U1 LNA_EN LOUT 1 24 IRQ ROUT 2 23 TUNE1 DBYP 3 22 TUNE2 VDD2 4 21 BAND VDD1 BAND [ XTALI XTALO 7 18 FMI SCLK [2] SCLK 8 17 RFGND SDIO [2] SDIO RST GND 11 14 AMI GND 12 13 VCC Rev 0.1 Si4840/44-DEMO 17 ...
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... RESET C42 0.1u XTALI [1] C32 22p Y2 32.768KHz C35 22p C37 0.1u VCC C44 0.1u C38 0.1u LCD_C1 [2] LCD_C2 [2] VCC C40 0.1u Figure 6. Si4840/44 DEMO Board Rev. 1.3 Schematic – MCU Portion ( Tuning indicator Q3 2N3906 IRQ [ BAK SEG27/IOA4 2 XIN SEG26/IOA3 3 XOUT SEG25/IOA2 4 GND SEG24/IOA1 5 VDD1 ...
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... KEY_C1 S9 MONO/ST [2] KEY_C2 S10 SETTING [2] KEY_C3 [2] KEY_R0 [2] KEY_R1 BZ [2] Figure 7. Si4840/44 DEMO Board Rev. 1.3 Schematic – MCU Portion ( Si4840/44-DEMO S3 SETTING MENU: POWER/BAND 1 BAND TOP S4 2 BAND BOTTOM DE/SPC 3 BLEND MONO S5 4 BLEND STEREO 5 BLEND SEPARATION BASS/TMR S6 6 TONE/VOL MODE ...
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... Si4840/44-DEMO Figure 8. Si4840/44-DEMO Board Gerber Rev 1.3 20 Rev 0.1 ...
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... N : OTES Si4840/44-DEMO Rev 0.1 21 ...
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... Si4840/44-DEMO C I ONTACT NFORMATION Silicon Laboratories Inc. Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 Please visit the Silicon Labs Technical Support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. ...