Kenwood Ez700SR Service Manual page 7

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
45 CD MECHA+B
46 SW5V
47,48 PS2-0 (NC),PS2-1 (NC) Power supply O Power IC control terminal
49~51 PS1-0~PS1-2
52 B.U-DET
53 ACC-DET
54 DIMMER
55 BVDD
56 BVSS
57 EXT AMP CON
58 NC (SVR)
59 P-MUTE
60 P-STBY
61 NC
62 PRE MUTE R
63 PRE MUTE L
64 NC (AFS)
65 O-DATA
66 O-CLK
67 O-CE
68 LX_RST
69 LX_CON
70 AVCONT
71 AVDD
72 AVSS
73 AVREF
74 PHONE
75 TYPE3
76 DC_OFFSET
77~80 NC
81 SR_F_LOCK
82 S-METER (NC)
83 NOISE (NC)
84 IFC-OUT (NC)
85 LX_MUTE
86 LX_REQ_M
87 NC
Module I/O
Power supply control terminal for power
Power supply I/O
supply MP3
Power supply I/O SW5V control terminal
Power supply O Power IC control terminal
Momentary power down detection
EXTRA I
terminal
EXTRA I ACC detection terminal
EXTRA I Small detection terminal
-
-
EXTRA O
AUDIO O POWER IC SVR control terminal
AUDIO O POWER IC MUTE output terminal
AUDIO O POWER IC STBY output terminal
O
AUDIO O Rch PRE MUTE output
AUDIO O Lch PRE MUTE output
Constant switching terminal during
TUNER O
noise detection
EXTRA I/O External display DATA terminal
EXTRA I/O External display CLK terminal
EXTRA I/O External display CE terminal
LX O Reset output to external devices
LX O Control output to external devices
Power supply O AD reference voltage control output
-
-
Power supply - AD reference voltage control input
EXTRA I PHONE detection terminal
I Destination switching terminal
I DC OFFSET detection terminal
I
Prior to initial contract (FA) with Sirius,
EXTRA I receiver function is restricted. Input for
this from sub.
TUNER I S-meter detection terminal
TUNER I FM noise detection terminal
TUNER I F/E IFC OUT input terminal
LX I MUTE request from external devices
LX O Request output to external devices
O Destination with no RDS
Ez700SR/Ez900HDS
Truth
Application
Value Table
t
w
q
y
Processing Operation Description
ON : L, OFF : Hi-Z
ON : L, OFF : Hi-Z
BU detected : L, BU not detected
(Momentary power down) : H
ACC exists : L, No ACC : H
ON : L, OFF : H
Momentary power down : H
When POWER OFF : L, When ALL OFF :
L, When TEL MUTE : L
POWER IC ON : H POWER OFF : L
Momentary power down : L, M-MUTE R : L
(While playing CD), When in 2 zones : H-fixed
Momentary power down : L, M-MUTE L : L
(While playing CD), When in 2 zones : H-fixed
While in FM seek and AF search : L,
During reception : H
Normally L, After system reset : H
400msec or more and then L.
ON : H, OFF : L
While in operation : H
Connected to 70pin.
TEL MUTE : 1V or less,
NAVI MUTE : 2.5V or more
H : LOCK, L : UN-LOCK (L while in low
power consumption mode), Threshold
value : 1.5V
According to tuner control specification
According to tuner control specification
According to tuner control specification
H : Mute ON, L : Mute OFF
Request input pending : L
Destination with no RDS : Output L-fixed,
7