RXD-NV500/NV600
7
CIRCUIT DESCRIPTION
2-2. KEY MATRIX
✜
Vref: 5V
KEY1
90PIN
MUTE
Tape
Tuner
CD
POWER
KEY OFF
Play
Band
play
KEY2
91PIN
CD
Vol Up
Vol Down
All Stop
_
_
_
KEY OFF
Open/Close
Pin No.
Name
I/O Connect
Description
1
V_DATA
O
Dolby pro logic surround decoder IC CXD2724Q data output
2
V_CLK
O
Dolby pro logic surround decoder IC CXD2724Q clock output
3
CD_DC_OFF
O
PU
CD DSP power control H = OFF ( POWER ON) L = ON ( POWER OFF)
4
CD_MON
O
PD
CD MON output
H = ON
L = OFF
5
SCLK
O
PU
CD SENSE DATA read clock output CXD2587Q
6
RDS_DATA
I
PU
RDS data input
H = 1
L = 0
7
CE
I
PD
Electricity failure detect input
H = AC ON
L = AC OFF
8
BYTE
I
PD
Connect GND
9
CNVSS
I
GND
Connect GND
10
XCIN
I
Timer clock (32.768kHz)
11
XCOUT
O
Timer clock (32.769kHz)
12
RESET
I
PU
Ucom reset
H = NORMAL
L = RESET
13
XOUT
O
Main clock(10mhz)
14
VSS
I
GND
GND
15
XIN
I
Main clock(10mhz)
16
+5V
I
VDD
Power 5V
17
NMI
I
PU
NO USED c5V(VCC)
18
REMOCON
I
PU
Remocon input
H
î
L to thrust
19
RDS_CLK
I
PD
RDS clock input
L
î
H to thrust
20
SCOR
I
PD
Sub cord synchronism signal (CXD2587Q)
L
î
H to thrust
21
SENSE
I
PU
CD SENSE input CXD2587Q
H = 1
L = 0
22
CD_CLK
O
PU
CD DSP clock output CXD2587Q
23
XLAT
O
PU
CD DSP latch output CXD2587Q
L = LATCH
24
CD_DATA
O
PU
CD DSP data output CXD2587Q
H = 1
L = 0
25
CD_CLOSE_M
O
CD tray motor close output
H = ON
L = OFF
26
CD_OPEN_M
O
CD tray motor open output
H = ON
L = OFF
27
V_RESET
O
PU
Virtual IC reset
L = RESET
28
SQCK
O
PD
CD sub cord clock CXD2587Q
29
SUBQ
I
PU
CD sub cord input CXD2587Q
30
NC
O
NO USED
31
REM_TXD
O
Remocon UART data output
32
REM_RXD
I
Remocon UART data input
33
CD_CLOSE_SW
I
PU
CD tray close switch detect
H = OFF
L = ON
34
CD_OPEN_SW
I
PU
CD tray open switch detect
H = OFF
L = ON
35
MD_TX
O
PU
Data transmit output to MD
36
MD_RX
I
PU
Data receiving input to MD
37
SEL_CLK
O
PD
Selector IC clock output
38
SEL_DATA
O
PD
Selector IC data output
39
SEL_LAT
O
PD
Selector IC latch output
40
V_LAT
O
Dolby pro logic surround decoder IC CXD2724Q latch output
41
V_READY
I
Dolby pro logic surround decoder IC CXD2724Q
ucom interface forwarding permission signal input
42
V_DOLBY
O
PD
Virtual dolby ON/OFF control
H = ON
L = OFF
2-3 Pin description
