VR-505/506/507/509/510/517
5
CIRCUIT DESCRIPTION
Pin No.
Pin Name
I/O
Description
1
VREF
-
Connected to ground.
2
TH SENS
I
Protection signal detection port for thermal sensor.
3
PROT1
I
Protection signal detection port for over current.
4
PROT2
I
Protection signal detection port for over voltage.
5
S LEVEL
-
Detection port of RDS signal level.
6
KEY GET
I
A/D key input for band and standby.
7
CE2
I
Detection port of chip enable 2 for microprocessor.
8
CE1
I
Detection port of chip enable 1 for microprocessor.
9
DIG DET
I
Detection port of digital signal for DTS.
10
VREF
-
A/D reference voltage.
11
VDD
-
Power 5v) for microprocessor.
12
OSC2
O
Main clock output(8.38MHz).
13
OSC1
I
Main clock input(8.38MHz).
14
VSS
-
Connected to ground.
15
XI
-
Connected to ground.
16
XO
-
Unused.
17
MMCD
-
Connected to ground.
18
DIR/CODEC DIN
O
Data output to DIR/CODEC.
19
DIR/CODEC DOUT
I
Data input port from DIR/CODEC.
20
DIR/CODEC CLK
O
Clock output to DIR/CODEC.
21
DSP DIN
O
Data output port to DSP.
22
DSP DOUT
I
Data input port from DSP.
23
DSP CLK
O
Clock output port to DSP.
24
DSP CE1
O
Chip enable 1 output to DSP.
25
DSP CE2
O
Chip enable 2 output to DSP.
26
REM I
I
Remote control signal input 1(Front panel).
27
REM 0
I
Remote control signal input 1(Rear panel).
28
DIR ERR
I
Detection port for DIR ERROR signal.
29
RDS CLK
I
Clock input of RDS demodulator IC.
30
DPS IRQ1
I
Detection port 1for DSP INTREQ.
31
DPS IRQ2
I
Detection port 2 for DSP INTREQ.
32
NC
-
Unused.
33
RESET
I
Reset signal input for microprocessor.
34
DSP PD1
O
PD output port 1for DSP.
35
DSP PD2
O
PD output port 2 for DSP.
36
DIR PD
O
Power down mode port for DIR.
37
CODEC PD
O
Power down mode port for CDDEC.
38
CODEC CLIP
I
Overflow detection port for CODEC analog signal.
39
CODEC CE
O
Chip select for CODEC.
40
RDS DIN
I
Data input of RDS demodulator IC.
41
NC
-
Unused.
42
FL DIN
O
Data output to FL driver.
43
FL DOUT
I
Data input from FL driver.
44
FL CLK
O
Clock output to FL driver.
45
FL CE
O
CE output to FL driver.
3-2 Pin Description of Microprocessor
