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1
- FM/AM Tuner Unit
A
AM ANT
1
FM ANT
3
B
ATT
ATT
No. Symbol
I/O Explain
C
1 AMANT
2 RFGND
3 FMANT
4 VCC
5 SL
O
6 CE2
7 WC
8 CE1
D
9 CK
10 DI
11 LDET
O lock detector
12 OSCGND
13 ROM_VDD
14 DO
O
15 DGND
16 COMP
O
17 VDD_3.3
18 RDS_CK
O RDS clock
19 RDS_DATA O RDS data
E
20 RDS_LOCK
O
21 RDS_HSLK
O
22 ANT1
23 L ch
O L channel output
24 R ch
O R channel output
F
64
1
2
7
6
13
VCO
TANK
RF
TANK
RF
LPF
2
12
15
4
I
AM antenna input
AM antenna input high impedance AMANT pin is connected with
an all antenna by way of 33µH. (LAU type inductor) A series circuit
including an inductor and a resistor is connected with RF ground for
the countermeasure against the hum of power transmission line.
RF ground
Ground of antenna block
I
FM antenna input
Input of FM antenna 75Ω Surge absorber is necessary.
The power supply for analog block. D.C 8.4V ± 0.3V
power supply
signal level
Output of FM/AM signals level
I
chip enable-2
Chip enable for EEPROM "Low" active
I
write control
You can write EEPROM, when EEPROM write control is "Low".
Ordinary non connection
I
chip enable-1
Chip enable for AF•RF "High" active
I
clock
Clock data input
I
data in
Data input
"Low" active
osc ground
Ground of oscillator block
power supply
Power supply for EEPROM pin 13 is connected with a power supply of
micro computer.
data out
Data output
digital ground
Ground of digital block
composite output
FM composite signal output.
The power supply for digital block. 3.3V ± 02V
power supply
Output of RDS clock(2.5V)
Output of RDS data(2.5V)
RDS lock
Output unit "High" active(2.5V) (RDS_LOCK turns over by the
external transistor. "Low" active)
RDS high speed
Output unit "High" active(2.5V)(RDS_HSLK turns over by the
lock
external transistor. "Low" active)
diversity antenna
Antenna switch control signal output. "High" : MAIN, "Low"=SUB
control
FM stereo "L-ch" signal output or AM audio output
FM stereo "R-ch" signal output or AM audio output
DEH-P5750MP/XM/ES
2
3
5
10
9
8
11
14
18 19 20 21
IC4
IC3
5V
3.3V
EEPROM
LPF
IC1
MIX/IF/PLL
IFT
CF
X-tal
17
3
4
COMP
16
Rch
24
Lch
23
IC2
DET/NC/MPC/MPX/DIV/RDS
ANT1
22
REG
OSC
4
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