Pioneer deh-30mp Service Manual page 63

5
- FM/AM Tuner Unit
AM ANT
FMRF
1 ATT
FM ANT
3
ATT
FMRF
RF adj
ANT adj
No. Symbol I/O Explain
1 AMANT I AM antenna input
2 RFGND RF ground
MANT I FM antenna input
4 VCC power supply
5 SL O signal level g
6 CE2 I chip enable-2
7 NC non connection
8 CE1 I chip enable-1
9 CK I clock
10 DI I data in
11 LDET O lock detector
12 OSCGND osc ground
13 ROM_VDD power supply
14 DO O data out
15 DGND digital ground g
16 NC non connection
17 VDD_3.3 power supply
18 RDS_CK O RDS clock
19 RDS_DATA DS data
20 RDS_LOCK O RDS lock
21 RDS_HSLK O RDS high speed
lock
22 AUDIOGND audio ground
23 L ch O L channel output
24 R ch O R channel output
5
6
7 6 13
IC 3 EEPROM
5.0V
OSC
LPF
IC 1
3.3V
MIXER, IF AMP
T51
CF52
2 12 15 22 16 4 17
AM antenna input high impedance AMANT pin is connected with
an all antenna by way of 4.7µH. (LAU type inductor) A series circuit
including an inductor and a resistor is connected with RF ground for
g Ground of antenna block
Input of FM antenna 75Ω Surge absorber
Output of FM/AM signals level
Chip enable for EEPROM "Low" active
Not used
Chip enable for AF•RF "High
Clock
" " active
g Ground of oscillator block
Power supply for EEPROM pin 13 is connected with a power supply of
micro computer.
Data output
g Ground of digital block
Not used
The power supply for digital block. 3.3V
Output of RDS clock(2.5V)
Output unit "
Output unit "High
external transistor. "
g Ground of audio block
FM stereo "L-ch" signal output or AM audio output
FM stereo "R-ch" signal output or AM audio output
DEH-30MP/XU/EW
6
7
5 10 9 8 11 14 18 19 20 21
IC 5
5V 3.3V
IC 4
3.3V 2.5V
2.5V
3.3V
g
g
g " active
g
g
"
"Low" active)
" active)
7
8
Rch
24
IC 2
2.5V
Lch
23
DET, FM MPX,
RDS DECODER
is necessary.
± 0.3V
± 0.2V
8
A
B
C
D
E
F
63