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- FM/AM Tuner Unit
3 7 63 1515 0
AMRF
AMANT
ATT
28
ANT ADJ
FMANT
27
ATT
RFGND
26
FMRF
LOCH
23
No. Symbol I/O Explain
1 STIND
2 FMSD
3 NL1
4 NL2
5 Rch
6 Lch
7 WC
8 SDBW
9
NC
10 VDD
TE
L 13942296513
11 DGND
12 CE2
13 SL
14 DI/DO
15 CK
16 CE1
17 NC
18 LDET
19 CREQ
20 NC
21 COMP
22 VCC
23 LOCH
24 FMLOCL I
25 LOCL
26 RFGND
27 FMANT I
28 AMANT I
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FM/AM 1ST IF 10.7MHz
MPXREF 41kHz
T51 Q51 CF51 CF52 CF53
AMDET
IC1
MIXER, IF AMP, DET.
CF202
IC 3
X901
IMG ADJ
AM 2ND IF
EEPROM
10.25MHz
450kHz
VDD
VCC
RF ADJ
LOCL
25
7
17
20
22
10
19
14
24
9
O
stereo
"Low" when the FM stereo signals are received.
indicator
To be pulled up to the "VDD" at 47kΩ.
O
FM station
"High" when signals are received. To be pulled up to the "VDD" at 47kΩ
detector
Meanwhile, 10kΩ should be used when taking diver FIX trigger from here
and "High: 0.9VDD or more" and "Low: 250mV or less".
(Should satisfy the diver IC specifications)
O
noise level-1
"High" when noise is received. Output for the RDS. GND at 47kΩ // 1,800pF.
O
noise level-2
"High" when noise is received. Output for the RDS. GND at 36kΩ // 330pF
O
R channel
FM stereo "R-ch" signal output or AM audio output.
output
Add the specified de-emphasis constant.
O
L channel
FM stereo "L-ch" signal output or AM audio output.
output
Add the specified de-emphasis constant.
write control
EEPROM write control. Writing permissible at "Low". Normally open.
O
SD bandwidth
SD bandwidth signal output. For detection of detuning data for the RDS.
Not used
power
Power supply pin for the digital section.
supply
DC 5V +/- 0.25V. Be careful about overlapping noise in the logic section.
digital ground
Grounding for the digital section.
I
chip enable-2
EEPROM chip enable. Active a "Low"
To be pulled up to the "VDD" at 47kΩ
I/O signal level
Received FM/AM signal level (strength) output.
Connect the specified load resistor and capacitor (10kΩ + 39kΩ // 4,700pF)
I/O data input/
Data input/Data output
data output
To be pulled up to the "VDD" at 47kΩ
I
clock
Clock input To be pulled up to the "VDD" at 47kΩ
I
chip enable-1
AF·RF chip enable. Active at "High" To be grounded at 47kΩ
Not used
O
lock detector
Active at "Low". To be pulled up to the "VDD" at 47kΩ
I
current request
Active at "Low". To be grounded at 47kΩ
Not used
O
composite signal
FM composite signal output. r out < 100Ω
power supply
Analog section power supply pin.DC 8.4V +/- 0.3V
I
local high
FM local high pin. When seeking local high, apply 5V together with "LOCL".
FM local low
FM local low pin. When seeking local low, apply 5V to the base of the NPN
transistor with which the specified resistor is being connected to the emitter.
Keep it open in case of ordinary marketed models.
I
local low
FM/AM local low pin. When seeking local low, apply 5V to the base of the
NPN transistor. Since this pin is exclusive for AM when the FMLOCL is in use,
do not drive it under FM.
RF ground
Grounding for the antenna section.
FM antenna input FM antenna input. 75Ω. Surge absorber (DSP-201M-S00B) is necessary.
AM antenna input AM antenna input. High impedance.
Connect to the antenna through an L (LAU type) of 4.7µH.To cope with the
power transmission line hums, insert a series circuit consisting of an L
(a coil of about 100mH) + R (a resistor of 470 Ω to 2.2kΩ) between the GND.
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L ch
IC 2 FM MPX
6
R ch
5
COMP
21
LDET
18
11
12 15 16
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Q Q
3
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1 3
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DVH-P7000R
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2 9
9 4
2 8
1 5
0 5
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2 9
9 4
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B
2 8
9 9
C
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