Pioneer DEH-1900R/XU/EW5 Service Manual page 58

1
- FM/AM Tuner Unit
A
1 2
B
No. Symbol y I/O Explain
C
1 ANT I
2 RFGND1
3 RFGND2
4 RFGND3
5 RFGND4
6 VCC
7 SLIN I
8 IFOUTA O
D
9
IFOUTB O
10 DGND
11 REFINA I
12 REFINB I
O
13 LDET
14 VDD
15 DI
I
16 CK
I
17 CE1
I
E
18 DO O
19 CE2 O
20 SLOUT O
F
58
1
2
3 4 5 6 7 8 9 10
ATT
ATT
TANK
ATT RF
Antenna input. 75 Ω. Surge absorber is necessary.
Antenna Input
Series circuit including an inductor and a resistor is connected with RF
ground for the countermeasure against the ham of power transmission line.
RF Ground Ground of R.F. block
RF Ground Ground of R.F. block
RF Ground Ground of R.F. block
RF Ground Ground of R.F. block
Power supply for Analog block. D.C 8.4 V ± 0.3 V
Power Supply
(performance isn't guaranteed besides 8.4 V)
Signal Level Input g Input signa level from BE_IC
IF Output IF signal output (F.E.output)
IF Output IF signal output (F.E.output) g
Digital Ground Ground of Digital. block
Reference Signal Input reference signal for PLL part with FE_IC
Reference Signal Input reference signal for PLL part with FE_IC
Lock Detector PLL lock detecter output "High" active
Power supply for Digital block. D.C 3.3 V ± 0.2 V
Power Supply
Data In Data input (not sending data in tuner reception operating in noise
being output)
CK Clock data input(not sending data in tuner reception operating in noise
being output)
Chip Enable-1 Chip enable for FE_IC "High" active
Data Out Data output
Chip Enable-2 Chip enable for EEPROM "Low" active. in power ON/OFF, please turn CE2
into "High" (= VDD).
Signal Level Output Output of FM/AM signals level (D.C.)
DEH-1900R/XU/EW5
2
3
11 12 13 14 15
VCO LFP
IC1
MIX / IF / PLL
LFP
g
( )
3
4
16 17 18 19 20
IC2
EEPROM
CF
4