Key Matrix; Pin Description - Kenwood RXD-NV500 Service Manual

2-2. KEY MATRIX

Vref: 5V
KEY1 MUTE
90PIN
KEY2 CD
91PIN Open/Close

2-3 Pin description

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