Pioneer ANH-P9R Service Manual page 69

5
QQ
- FM/AM Tuner Unit
3 7 63 1515 0
AMRF
AMANT
ATT
28
ANT ADJ
FMANT
ATT
27
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 AMDET O
TE 10 VDD
L 13942296513
11 DGND
12 CE2
13 SL
14 DI/DO
15 CK
16 CE1
17 AMPNS
18 LDET
19 CREQ
20 AMINI
21 COMP
22 VCC
23 LOCH
24 FMLOCL I
25 LOCL
26 RFGND
27 FMANT I
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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
AM 2ND IF
X901
IMG ADJ
EEPROM
450kHz
10.25MHz
RF ADJ
LOCL
25 7 17 22 10 19 14 24
O stereo "Low" when the FM stereo signals are received.
indicator To be pulled up to the "VDD" at 47kΩ.
FM station "High" when signals are received. To be pulled up to the "VDD" at 47kΩ
O
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.
AM detector AM detector output. r out < 100Ω
output
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 (10k Ω+ 39k Ω//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
O AM PNS IF signal IF signal output for AM PNS circuit.
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
AM audio input The frequency response and the level are set by connecting an external CR
network with terminal AMIN as terminal AMDET. r in = 50kΩ
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.
x ao
Connect to the antenna through an L (LAU type) of 4.7µH.To cope with the
y
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.
i
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8
L ch
IC 2 FM MPX
6
R ch
5
AMIN
20
COMP
21
LDET
18
11 12 15 16 81 32 34 1 9
Q Q
3 6 7 1 3
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ANH-P9R/EW
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7
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
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co
7
8
9 9
A
B
2 8 9 9
C
D
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