si4844-b-demo board users guide
TRANSCRIPT
Rev. 0.1 5/13 Copyright © 2016 by Silicon Laboratories Si4844-B-DEMO
Si4844-B-DEMO
Si4844-B DEMO BOARD USER’S GUIDE
1. FeaturesATDD (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 MHzFM3 87.3 –108.25 MHz FM4 76– 90 MHz FM5 64–87 MHz (Demo Board Default)
Worldwide AM band support from 504 kHz to 1750 kHz with 5 default sub-bands:AM1 520–1710 kHz (Demo Board Default)AM2 522–1620 kHz (Demo Board Default)AM3 504–1665 kHzAM4 520–1730 kHzAM5 510 –1750 kHz
Worldwide SW band support from 2.3 to 22 MHz with 16 default sub-bands:SW1 5.6–6.4 MHz (DEMO Board Default)SW2 5.95–6.2 MHzSW3 6.8–7.6 MHz (DEMO Board Default)SW4 7.1–7.6 MHzSW5 9.2 –10 MHz (DEMO Board Default)SW6 9.2–9.9 MHzSW7 11.45 –12.25 MHz (DEMO Board Default)SW8 11.6–12.2 MHzSW9 13.4–14.2 MHz (DEMO Board Default)SW10 13.57 - 13.87 MHzSW11 15–15.9 MHz (DEMO Board Default)SW12 15.1–15.8 MHzSW13 17.1–18 MHz (DEMO Board Default)SW14 17.48–17.9 MHzSW15 21.2–22 MHz (DEMO Board Default)SW16 21.45–21.85 MHz
Supports wider FM/SW band range
Twelve positions slide switch or one push button for selecting different bands according to the target application
Two AAA battery operations with working voltage down to 2.0 V
Economical potentiometer for frequency tuning replaces more expensive variable capacitor (PVC)
Potentiometer and/or push button volume control
FM 50 µs or 75 µs (default) de-emphasis
9-level Bass/Treble via push button control for FM
7-level Bass/Treble via push button control for AM/ SW
FM/AM/SW band indicator and frequency display in LCD
2×4 matrix keypad
The frequency range of each band, de-emphasis, and AM channel space can be re-configured by host MCU.
Si4844-B-DEMO
2 Rev. 0.1
2. Overview
This manual describes the operation of the Silicon Labs Si4844 DEMO board Rev1.4, Mar 12, 2013. The SiliconLaboratories Si4844-DEMO board is designed with the 24-pin SSOP packaged Si4844-B chip, the revolutionarysingle chip AM/FM/SW receiver that integrates everything from antenna input to audio output and allows use ofcommon and economical potentiometers to do the frequency tuning. It provides a complete portable analog tunedigital display AM/FM/SW radio design. The LCD displays the tuning information. The Si4844-DEMO is designedwith 1-layer PCB, allowing the lowest cost without sacrificing the RF performance. The demo board works with twoAAA batteries and working voltage down to 2.0 V.
3. Description
Figure 1 and Figure 2 shows the physical layout of the board with key components indicated.
Figure 1. Si4844-DEMO Board Top Side in Time Mode
Si4844-B-DEMO
Rev. 0.1 3
Figure 2. Si4844-DEMO Board Bottom Side
Si4844-B-DEMO
4 Rev. 0.1
Power:
BAT1: 2 cells AAA battery holder
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 selector
J1: BNC connector for FM/ SW conductive test or FM whip antenna
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 isto use the POWER/BAND push button. S14 determines which method is in use.
S14:
1-2: SMA for AM Conductive Test (J6)2-3: AM Ferrite Antenna
321
1-2: FM HP ANT (J5)2-3: FM BNC (J1)
3
2
1
2-3: Use slide switch to select band1-2: Use push button to select band
1
2
3
Si4844-B-DEMO
Rev. 0.1 5
Radio Band Property Setting
S13:
Audio Output Test Point:
For general specification test, TP3 is the recommended audio signal test point. The audio test instrument shouldbe connected to TP3 to get more accurate test results. J5 can also be used as an audio test point, but the testresults may not be entirely accurate under some circumstances.
TP3:
Tuner Output Test Point:
For the tuner specification test, TP1 is the recommended tuner output test point. The audio test instrument shouldbe connected to TP1 to get accurate test results.
TP1:
Main Components:
U1: Silicon Laboratories Si4844-B FM/AM/SW ATDD receiver
U2: Audio amplifier
U3: MCU
LCD: The digital display for tuning information
3
2
1
2-3: Use the keypad to set the band property via MCU
1-2: Use the tuner default band setting values
3
2
1 Lout
Rout
GND
321
Lout
Rou
t
GN
D
Si4844-B-DEMO
6 Rev. 0.1
Control Interface:
VR1: Frequency tuning wheel
VR2: Volume control wheel
S3~S10: The keypad for human interface
S2: Band switch for FM, AM, and SW
Band definition for the slide switch is as follows:
1: FM1 (W 64–108 MHz) (N 87–108 MHz), ST indication = 6 dB separation@20 dBµV
2: FM5 (W 76–108 MHz) (N 64–87 MHz), 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 9.5–18.0 MHz) (N 17.1–18 MHz)
12: SW15 (W 10.0–22.0 MHz) (N 21.2–22 MHz)
Note: N = Narrow-band, W = Wideband
Human Interface:
There are 8 keys for controlling the demo board as shown below.
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.
FM/AM/SW Radio Mode: Tuner IC works in powerup mode. Radio function is enabled. LCD displays the radio station parameters. Buttons are used to adjust radio settings.
The functions of the buttons are summarized in Table 1
The FM/AM/SW radio parameters that can be configured are listed below in Table 2.
321 4 5 6 7 8 9 1110 12
TREBLE/AL BASS/TMR DE/SPC POWER/BAND
SETTINGMONO/STW/N BAND
DOWN/VOL- UP/VOL+
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Rev. 0.1 7
Table 1. Key Function Description
Button/Mode Time Mode FM/AM/SW Radio Mode
Tuner Off Tuner On
POWER/BAND Hold Time < 1s
None Change between FM, AM, and SW (there are 2 FM bands, 2 AM bands, and 8 SW bands)
Hold Time > 1s
Enable radio Disable radio function and enter Time 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 the current time/alarm parameter by one unit per each press.
In radio setting menu, change the current parameter by one unit per each press.In radio working mode, increase volume 1 step per each press.
Hold Time > 1s
In setting menu, change the current time/alarm parameter automatically.
In radio setting menu, change the current parameter automatically.In radio working mode, increase volume level automatically until at maximum.
DOWN/VOL– Hold Time < 1s
In setting menu, change the current time/alarm parameter by one unit per each press.
In radio setting menu, change the current parameter by one unit per each press.In radio working mode, decrease volume 1 step per each press.
Hold Time > 1s
In setting menu, change the current time/alarm parameter automatically.
In radio setting menu, change the current parameter automatically.In radio working mode, decrease volume level automatically until at minimum.
MONO/STW/N BAND
Hold Time < 1s
None FM/SW mode: Change band range between wideband and narrow-band.
Hold Time > 1s
None FM mode: Change between forced mono audio and ST audio
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.
Si4844-B-DEMO
8 Rev. 0.1
Table 2. Radio Configuration Parameters
FM Parameter AM Parameter SW Parameter
Bass/Treble: 0-8 Bass/Treble: 1-7 Bass/Treble: 1-7
Default: 4 Default: 3 Default: 3
Digital volume: 0-63 Digital volume: 0-63 Digital volume: 0-63
Default: 63 Default: 63 Default: 63
Band top: max 109 MHz Band top: max 1750 kHz Band top: max 28.5 MHz
Default: 108/108 MHz for wide band FM1/FM2
Default: 1710 kHz Default: 7.6/10.0/18.0/16.0/23.0/22.0/18.0/22.0 MHz for wide band SW1 to SW8 respec-tively.
Band bottom: min 64 MHz Band bottom: min 504 kHz Band bottom: min 2.3 MHz
Default: 87.5 MHz for narrow-band and 64 MHz for wide-band.
Default: 522 kHz Default: 3.2/3.2/5.9/7.0/7.0/9.0/9.5/10.0 MHz for wideband SW1 to SW8 respectively.
De-emphasis: 50 or 75 µs Channel space: 9 or 10 kHz
Default: 75 µs Default: 9 kHz
TONE/VOL mode: a-d
Default: d
Tuning preference: a-d Tuning preference: a-d
Default: a Default: a
Notes: TONE/VOL mode has four modes:1. Bass/treble mode: no digital volume control, fixed volume level at 59.2. Digital volume mode: no bass/treble effect, volume levels from 0 to 63.3. Mixed mode 1: bass/treble & digital volume coexist, volume levels from 0 to 63, scale to 0 ~59.4. Mixed mode 2: bass/treble & digital volume coexist, volume levels from 0 to 63.
The Tuning preference of FM mode has four selections:1. preference1: When tuning to adjacent channels, allow stereo separation and stereo indicator is on, the volume level
decreases by2 dB.2. preference2: When tuning to adjacent channels, allow stereo separation and stereo indicator is on, the volume level
remains unchanged.3. preference3: When tuning to adjacent channels, disable stereo separation and stereo indicator is off, the volume level
decreases by 2 dB.4. preference4: When tuning to adjacent channels, disable stereo separation and stereo indicator is off, the volume level
remains unchanged.
The Tuning preference of SW mode has two selections:
1. preference1: When tuning to adjacent channels, the volume level decreases by 2 dB.2. preference2: When tuning to adjacent channels, the volume level remains unchanged.
There is no tuning preference selection for AM mode.
Si4844-B-DEMO
Rev. 0.1 9
4. Operation
The S4844-DEMO Board, a complete analog tune and digital display radio, provides two major modes ofoperation: Time mode and FM/AM/SW Radio mode.
4.1. Time ModePut two AAA batteries into the battery compartment. The board will automatically enter Time Mode and display thetime. The demo board display in Time Mode is illustrated in Figure 1.
4.1.1. Time Setting
The time default value is 00:00 and can be set to the correct time manually when needed.
1. In Time mode, press the BASS/TMR button to enter 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 finished setting the time, press the BASS/TMR button to quit the setting menu. The MCU automatically quits the setting menu if there is no operation within 2 seconds.
4.1.2. Alarm Setting
1. In Time mode, press the 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 finished the alarm setting, press the TREBLE/AL button to quit the setting menu. The MCU automatically quits the setting menu if there is no operation within 2 seconds.
4. If the alarm is enabled and the alarm setting time is matched, the radio will be automatically turned on after the buzzer sounds for 5 seconds.
5. The radio will be turned off and demo board will go into sleep mode automatically if there is no operation on the buttons within 15 minutes; if there is any operation on the buttons, the auto-sleep function will be disabled. The radio keeps working throughout this time.
Si4844-B-DEMO
10 Rev. 0.1
4.2. FM/AM/SW Radio ModeIn Time mode, after a long press (hold time > 1s) of the POWER/BAND button or when the alarm time is reached,the device will enter FM/AM/SW Mode. The LCD displays the following information: band indicator, band frequencyindicator, and sleep indicator in case the radio is automatically turned on by the alarm.
The demo board display in FM/AM/SW Mode is illustrated in Figure 3.
Figure 3. LCD Display in FM Radio Mode
The demo board provides two methods for selecting the radio band. One is to use the slide switch S2. The other isto use the POWER/BAND push button. S14 determines which method is in use.
The demo board also provides two methods for setting the band property. One is to use the tuner default values.The other method is to use the keypad to reconfigure the band property value via the MCU. S13 determines whichmethod is in use. If you use the tuner default values, the band property is fixed and cannot be reconfigured. Referto Section "4.2.1. MCU Setting Band Property” for the operation details for setting the band property using thekeypad.
To operate the demo board, follow these procedures:
1. According to the desired radio band selection method, set S14 to use slide switch or push button.
2. According to the desired radio band property, set S13 to use tuner default values or reconfigure the band property via MCU.
3. Hold the POWER/BAND button (hold time > 1s) or when the alarm time is reached, the device will enter FM/AM/SW Mode.
4. Use slide switch S2 or press the POWER/BAND push button to select the desired band.
5. 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.
6. Rotate the tuning wheel and find the desired radio station with the help of the LCD display and/or tuning indicator D1.
7. Rotate the volume control wheel VR2 and/or press the DOWN/VOL– or UP/VOL+ button to get a comfortable volume. Press the BASS/TMR or TREBLE/AL button to get the desired bass/treble level.
Note: For FM listening, the earphone cable must be connected to the board when S12 is set to HP ANT or an external antennamust 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 theradio or switching the band to AM.
Si4844-B-DEMO
Rev. 0.1 11
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
De-emphasis (only for FM)
Channel space (only for AM)
The setting menu is illustrated in Figure 4.
To set the band properties, follow these steps:
1. Press the SETTING button to enter the setting menu and select the item to be set. The selected item flashes for 1 second, then automatically switches to its current value.
2. While the value is flashing, press the DOWN/VOL– or UP/VOL+ button to set the desired value within 3 seconds.
3. Repeat step 1 and 2 to finish setting the band properties.
4. When the band properties are set, the MCU automatically quits the setting menu if there is no operation within 3 seconds.
5. In FM working mode, press the DE/SPC button to set the De-emphasis 50 µs or 75 µs.
6. In AM working mode, press the DE/SPC button to set the Channel Space 9 kHz or 10 kHz.
Figure 4. Setting Menu
SETTING MENU:
1 Band Top
2 Band Bottom
3 TONE/VOL MODE
4 Tuning preference
a preference1
b preference2
a Bass/Treble MODE
b Dig-Vol MODE
c MIX MODE1
d MIX MODE2
c preference3
d preference4
Si4844-B-DEMO
12 Rev. 0.1
4.2.2. MCU Setting Radio Working Mode
The host MCU can set the radio working mode.
The working modes include:
Tone/volume mode (only for FM), item 3 in setting menu
Tuning preference (only for FM and SW), item 4 in setting menu
Forced mono audio/ST audio (only for FM)
Follow these procedures to set radio working mode:
1. Press the SETTING button to enter item 3. The LCD displays the item number st3 for 1 second, then automatically switches to its mode indication.
2. Press the DOWN/VOL– or UP/VOL+ button to select the desired mode within 3 seconds.
3. Repeat steps 1 and 2 to set the tuning preference by setting the item 4.
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.
Si4844-B-DEMO
Rev. 0.1 13
5. Bill of Materials
ATDD AM/FM/SW receiver IC Si4844-B with external 32.768 kHz crystal oscillator support
LM4910MA audio amplifier IC
TM8723 MCU
See Table 3 for details
Table 3. Si4844-DEMO Board Bill of Materials REV 1.4
Item Qty Reference Description Value
1 12 C1-2 C6 C19 C24 C37-42 C44 CAP,SM,0603,X7R 0.1 µ
2 2 C5 C36 CAP,SM,0603,X7R 0.47 µ
3 2 C8 C10 CAP,SM,0603,COG 100p
4 1 C33 CAP,SM,0603,COG 10p
5 4 C28-29 C32 C35 CAP,SM,0603,COG 22p
6 2 C11 C20 CAP,SM,0603,COG 150p
7 2 C30-31 CAP,SM,0603,X7R 33n
8 1 C34 CAP,SM,0603,COG 33p
9 1 C15 CAP,SM,0603,X7R 4.7 µ
10 4 C4 C7 C12 C21 CAP,SM,0603,X7R 10.0 µ
11 1 C13 CAP,SM,1210,X7R 47 µ
12 2 C18 C22 CAP,SM,0603,COG 330p
13 3 C23 C26 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 R34 RES,SM,0603 100k
17 1 R27 RES,SM,0603 100R
18 2 R5 R6 RES,SM,0603 2k
19 1 R32 RES,SM,0603 10R
20 2 R3 R42 RES,SM,0603 10k
21 1 R41 RES,SM,0603 120k
22 2 R17 R22 RES,SM,0603 12k
23 2 R1-2 RES,SM,0603 1M
24 2 R4 R31 RES,SM,0603 1k
25 1 R24 RES,SM,0603 200R
26 1 R13 RES,SM,0603 22R
27 2 R16 R18 RES,SM,0603 2.2k
28 1 R46 RES,SM,0603 4.7M
29 2 R19 R20 RES,SM,0603 6.8k
30 1 R21 RES,SM,0603 NP
31 1 R7 RES,SM,0603,Tolerance ±1% 10k 1%
Si4844-B-DEMO
14 Rev. 0.1
32 1 R29 RES,SM,0603,Tolerance ±1% 160k 1%
33 9 R9-12 R14-15 R28 R33 R35 RES,SM,0603,Tolerance ±1% 20k 1%
34 1 R43 RES,SM,0603,Tolerance ±1% 30k 1%
35 1 R36 RES,SM,0603,Tolerance ±1% 33k 1%
36 1 R8 RES,SM,0603,Tolerance ±1% 40k 1%
37 1 R44 RES,SM,0603,Tolerance ±1% 47k 1%
38 1 U1 SI4844-B SOIC16 Si4844-B
39 1 U2 LM4910MA,SO8 LM4910MA
40 1 U3 TM8795 44 PIN TM8795 44 PIN
41 1 Q2 TRANSISTOR NPN SOT23 2N3904
42 1 Q1 TRANSISTOR NPN SOT23 2SC9018
43 1 Q3 TRANSISTOR NPN SOT23 2N3906
44 2 D2 D4 DIODE,SM,ESD,SOT23 BAV99
45 4 B4 B5 B6 B7 FERRITE BEAD,SM,0603 2.5 k/100M
46 1 B1 FERRITE BEAD,SM,0603 NP
47 1 BZ1 BUZZER BUZZER
48 2 Y1-2 CRYSTAL 32.768KHz
49 1 D1 LED LED
50 1 D6 1N4148 1N4148
51 1 J5 Stereo earphone jack with switch 3.5mm
52 1 L1 RES,SM,0603 0R
53 1 L2 IND,SM,0603 270 nH
54 2 L3 L4 IND,SM,0603 120 nH
55 2 TP1 TP3 CONN,TH,1x3,HDR CONN,TH,1x3,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 4 S11 S12 S13 S14 One pole two throw switch
62 1 S2 Single pole twelve throw switch
63 9 S1 S3-10 Push button
64 1 VR1 100k,±10%,Variable resistor(POT) 100k
65 1 VR2 10k,±20%,Variable resistor(POT) 10k
Table 3. Si4844-DEMO Board Bill of Materials REV 1.4 (Continued)
Item Qty Reference Description Value
Si4844-B-DEMO
Rev. 0.1 15
6. Schematics
FM/S
W
MW
Si48
44
Aud
io o
utpu
t
S13:
Ban
d pr
oper
ty
2-3
Tune
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1 M
CU S
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4: B
and
Sele
ctio
n
2-3
slid
e sw
itch
2-1
push
but
ton
Test point
Lout
Rout
GN
D
Test point
Lout
Rout
GN
D
FM1
(W 6
4MH
z -
108M
Hz
) (N
87M
Hz
- 10
8MH
z)
FM5
(W 7
6MH
z -
108M
Hz)
(N
64M
Hz
- 87
MH
z)
AM
1 (5
20kH
z -
1710
kHz)
AM
2 (5
22kH
z -
1620
kHz)
SW1
(W 3
.2M
Hz
- 7.
6MH
z) (
N 5
.6M
Hz
- 6.
4MH
z)
SW3
(W 3
.2M
Hz
- 10
.0M
Hz)
(N
6.8
MH
z -
7.6M
Hz)
SW5
(W 5
.9M
Hz
- 18
.0M
Hz)
(N
9.2
MH
z -
10.0
MH
z)
SW7
(W 7
.0M
Hz
- 16
.0M
Hz)
(N
11.
45M
Hz
- 12
.25M
Hz)
SW9
(W 7
.0M
Hz
- 23
.0M
Hz)
(N
13.
4MH
z -
14.2
MH
z)
SW11
(W
9.0
MH
z -
22.0
MH
z) (
N 1
5MH
z -
15.9
MH
z)
SW13
(W
9.5
MH
z -
18.0
MH
z) (
N 1
7.1M
Hz
- 18
MH
z)
SW15
(W
10.
0MH
z -
22.0
MH
z) (
N 2
1.2M
Hz
- 22
MH
z)
(Not
e: W
= W
ide
Band
, N=
Nar
row
Ban
d)(N
ote:
Wid
e ba
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valid
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CU s
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C39
0.1u
BAT1
AA
A*2
12 3 4 5 6 7 8 9 10 11 12 13
S2
R15
20k
1% R10
20k
1% R12
20k
1% R11
20k
1% R14
20k
1% R920
k 1% R7
10k
1%R840
k 1% R2
820
k 1% R29
160k
1%
J1
L2
270n
H
C19
0.1u
C15
4.7u
VR1
100k
10% C6 0.1u
D4
BAV9
9
C5
0.47
u
Q1
2SC9
018
R31
1k
R32
10R
C30
33n
C33
10p
R41
120kC31
33n
B6
2.5k
/100
M
C36
0.47
u
AN
T1M
W fe
rrite
ant
enna
J6
D2
BAV9
9R3
410
0k
C34
33p
1 LNA_EN
2 IRQ
3 TUNE1
4 TUNE2
5 BAND
6 NC
7 NC
8 FMI
9 RFGND
10 NC
11 NC
12 AMI 13GND
14GND
15RST
16SDIO
17SCLK
18XTALO
19XTALI
20VDD1
21VDD2
22DBYP
23ROUT
24LOUT
U1
C1 0.1u R2
710
0R
R33
20k
1%R35
20k
1%R36
33k
1%
C13
47u
R43
30k
1% R44
47k
1%
C14
100u
/4V
L1 0R/1
20nH
C4 10u
C7 10u
C12
10u
C21
10u
VR2-A VR2-B
123
J5
C24
0.1u
R20
6k8
R22
12k
B42k
5/10
0M
B52k
5/10
0M
B72k
5/10
0M
1IN
1
2IN
2
3SH
UTD
OW
N
4G
ND
5VD
D
6VO
3
7VO
2
8VO
1
U2
LM49
10M
A
C10
100p
C11
150p
R16
2k2
C18
330p
C20
150p
R17
12k
R18
2k2
C22
330p
R19
6k8
C23
220u
C26
220u
C27
220u
C9 100p
C8 100p
B1
NC
C25
100u
/6.3
V
Y1
32.7
68KH
z
C28
22p
C29
22p
R46
4.7M
R3 10k
R21
NC
R42
10k
S11
12
3S1
3
12
3S1
4
R5 2k
R6 2k
L312
0nH
L412
0nH
12
3
S12
1 2 3
TP3
1 2 3
TP1
VCC
BAN
D[1
]
LNA
_EN
[1]
LNA
_EN
[1]
BAND [1]
TUN
E1[1
]
TUN
E1[1
]
RESE
T[2
]
VCC
VCC
VCC
FMI
[1]
IRQ
[2]
SCLK[2]
SDIO[2]
VCC
XTA
LI[2
]
FMI
[1]
VCC
SHUTDOWN[2]
VCC
Fig
ure
5.S
i484
4-D
EM
O B
oar
d S
chem
atic
RE
V1.
4
Si4844-B-DEMO
16 Rev. 0.1
MCU
LCD
KEY
BUZZ
ER
1 Ba
nd T
op2
Band
Bot
tom
3 To
ne/V
ol M
OD
E
d M
IX M
OD
E2c
MIX
MO
DE1
b D
ig-V
ol M
OD
Ea
Bass
/Tre
ble
MO
DE
SETT
ING
MEN
U:
d pr
efer
ence
4c
pref
eren
ce3
b pr
efer
ence
2a
pref
eren
ce1
4 Tu
ning
Pre
fere
nce
W/N
Ban
dW
=W
ide,
N=
Nar
row
S5 BASS
/TM
R
S3
POW
ER/B
AN
D
S4 DE/
SPC
S6
TREB
LE/A
L
S9 MO
NO
/ST
S7 UP/
VOL+
S8 DO
WN
/VO
L-
S10
SETT
ING
BZ1
Q2
2N39
04
R4 1k
D6
1N41
48
C2 0.1u
C322
0u/4
V
R13
22R
PM MH
zKH
z
SLEE
PFM M
WSW
MH
z
1 1MOC
2 2MOC
3 3MOC
4 0GES
5 1GES
6 2GES
7 3GES
8 4GES
9 5GES
01 6GES
11 7GES
21 8GES
31 9GES
41 01GES
51 11GES
61 21GES
71 31GES
LCD
11
BAK
2XI
N3
XOU
T4
GN
D5
VDD
16
VDD
27
VDD
38
CUP1
9CU
P210
COM
111
COM
2
213MOC314MOC415MOC51)1K(1GES61)2K(2GES71)3K(3GES81)4K(4GES91)5K(5GES02)6K(6GES12)7K(7GES22)8K(8GES
23SE
G9(
K9)
24SE
G10
(K10
)
25SE
G11
(K11
)
26SE
G12
(K12
)
27SE
G21
28SE
G22
29SE
G23
30SE
G24
/IO
A1
31SE
G25
/IO
A2
32SE
G26
/IO
A3
33SE
G27
/IO
A4
43CLE/1BOI/82GES
53PLE/2BOI/92GES
63BZB/3BOI/03GES
73ZB/4BOI/13GES
831IK/1COI/23GES
932IK/2COI/33GES
043IK/3COI/43GES
144IK/4COI/53GES
24TESER
34TNI
44TSET
U3
Y2 32.7
68KH
z
C32
22p
C35
22p
C37
0.1u
C38
0.1u
C40
0.1u
Q3
2N39
06
R1 1M
R2 1M
C41
0.1u
S1 RESE
T C42
0.1u
C44
0.1u
D1
Tuni
ng in
dica
tor
R24
200R
KEY_
R1[2
]
KEY_
C3[2
]
KEY_
C1[2
]
KEY_
C0[2
]
KEY_
C2[2
]
KEY_
R0[2
]
BZ[2
]
VCC
1C_DCL ]2[
2C_DCL ]2[
3C_DCL ]2[
0S_DCL ]2[
1S_DCL ]2[
2S_DCL ]2[
3S_DCL ]2[
4S_DCL ]2[
5S_DCL ]2[
6S_DCL ]2[
7S_DCL ]2[
8S_DCL ]2[
9S_DCL ]2[
01S_DCL ]2[
11S_DCL ]2[
21S_DCL ]2[
31S_DCL ]2[
LCD
_C1
[2]
LCD
_C2
[2]
3C_DCL]2[
0R_YEK]2[
1R_YEK]2[
0S_DCL]2[
1S_DCL]2[
2S_DCL]2[
3S_DCL]2[
4S_DCL]2[
5S_DCL]2[
LCD
_S6
[2]
LCD
_S7
[2]
LCD
_S8
[2]
LCD
_S9
[2]
LCD
_S10
[2]
LCD
_S11
[2]
LCD
_S12
[2]
SDIO
[1]
RESE
T[1
]
SCLK
[1]
31S_DCL ]2[
ZB ]2[
0C_YEK ]2[
1C_YEK ]2[
2C_YEK ]2[
3C_YEK ]2[
IRQ
[1]
VCC
VCC
VCC
XTA
LI[1
]
CCV
NWODTUHS ]1[
Fig
ure
6.
Si4
844
-DE
MO
Bo
ard
Sch
em
atic
RE
V1.
4
Si4844-B-DEMO
Rev. 0.1 17
Fig
ure
7.
Si4
844-
DE
MO
Bo
ard
Ger
ber
RE
V1.
4
DisclaimerSilicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death. Silicon Laboratories products 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.
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