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5
- FM/AM Tuner Unit
1
2
3
ATT
ATT
No. Symbol
y
I/O Explain
1 ANT
I
Antenna Input
2 RFGND1
RF Ground
3 RFGND2
RF Ground
4 RFGND3
RF Ground
5 RFGND4
RF Ground
6 VCC
Power Supply
7 SLIN
I
Signal Level Input
g
8 IFOUTA
O
IF Output
9
IF Output
IFOUTB
O
10 DGND
Digital Ground
11 REFINA
I
Reference Signal
12 REFINB
I
Reference Signal
O
13 LDET
Lock Detector
14 VDD
Power Supply
15 DI
Data In
I
16 CK
CK
I
17 CE1
Chip Enable-1
I
18 DO
O
Data Out
19 CE2
O
Chip Enable-2
20 SLOUT
O
Signal Level Output
5
6
4
5
6
7
8
9
10
ATT
TANK
RF
LFP
Antenna input. 75 Ω. Surge absorber is necessary.
Series circuit including an inductor and a resistor is connected with RF
ground for the countermeasure against the ham of power transmission line.
Ground of R.F. block
Ground of R.F. block
Ground of R.F. block
Ground of R.F. block
Power supply for Analog block. D.C 8.4 V ± 0.3 V
(performance isn't guaranteed besides 8.4 V)
Input signa level from BE_IC
g
IF signal output (F.E.output)
IF signal output (F.E.output)
g
Ground of Digital. block
Input reference signal for PLL part with FE_IC
Input reference signal for PLL part with FE_IC
PLL lock detecter output "High" active
Power supply for Digital block. D.C 3.3 V ± 0.2 V
Data input (not sending data in tuner reception operating in noise
being output)
Clock data input(not sending data in tuner reception operating in noise
being output)
Chip enable for FE_IC "High" active
Data output
Chip enable for EEPROM "Low" active. in power ON/OFF, please turn CE2
into "High" (= VDD).
Output of FM/AM signals level (D.C.)
DEH-1950/XU/CN5
6
7
11
12
13
14
15
16
17
EEPROM
VCO
LFP
IC1
MIX / IF / PLL
CF
(
)
7
8
18
19
20
IC2
8
A
B
C
D
E
F
57
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