Kenwood KDC-MP5028 Service Manual page 10

KDC-MP5028/MP528
/W6031/W6031Y
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name
70 OEM_DISP_CE
70 NC
71 NC
72 P_CON
73 KEY_REQ
74 ANT_CON
75 ILLUMI_DET
76 BU_DET
77 ACC_DET
78 (PWIC_SVR)
79 PWIC_MUTE
80 PWIC_STBY
81 LX_CON
82 MUTE_PRE_R
83 MUTE_PRE_L
84 MUTE_0
85 MUTE_1
86 MUTE_2
87 LINE_MUTE
88 NC
89 PWIC_DC_DET
90 LX_RST
91 MUTE_C
92 NC
93 RDS_NOISE
94 AVSS
95 TUN_SMETER
96 VREF
97 AVCC
98 LX_DATA_S
99 LX_DATA_M
100 LX_CLK
10
Module
I/O
(functional)
EXTRA I/O External display control request
O Not used. (M-destination only)
EXTRA O Not used.
Power supply O External AMP control terminal
toPANEL I Communication request from VFD driver
EXTRA O Power antenna control
EXTRA I Dimmer Illumi control
EXTRA I Momentary power down detection
EXTRA I ACC Power supply detection
PWIC O SVR discharge circuit
PWIC O Power IC MUTE terminal
PWIC O Power IC standby control
LX_M O Boot up request to slave unit
AUDIO O PRE_OUT MUTE Rch
AUDIO O PRE_OUT MUTE Lch
AUDIO I/O E-VOL FRONT MUTE terminal
AUDIO I/O E-VOL REAR MUTE terminal
AUDIO I/O E-VOL OTHER MUTE terminal
EXTRA I Line mute detection
O Not used.
PWIC I DC Offset detection terminal
LX_M O Hard resetting to slave unit
AUDIO I/O E-VOL MUTE terminal (For AFS)
O Not used.
TUNER I FM noise detection terminal
µCOM
-
TUNER I S-meter output
µCOM
-
µCOM
-
LX_M I Data from slave unit
LX_M I/O Data to slave unit
LX_M I/O LX BUS clock
Truth
Application
Value Table
Processing Operation Description
External display
Output L-fixed
Output L-fixed
POWER ON : H, POWER OFF : L,
STANDBY source : L
Connect to VFD_PAN_DATA
TUNER ON : H
L : ON, H : OFF
With BU : L,
No BU, Momentary power down : H
With ACC : L, No ACC : H
When POWER OFF and momentary
power down, for 5 sec. : H, Then, : L
When STANDBY source and momentary
power down : L, When TEL MUTE : L
POWER ON : H, POWER OFF : L
H : Slave unit ON, L : Slave unit OFF
When CD MUTE R is L : H (When CD)
At momentary power down : H
Refer to timing chart. Only with 2-zone
and NAVI interruption : L-fixed
When CD MUTE L is L : H (When CD)
At momentary power down : H
Only with 2-zone and
NAVI interruption : L-fixed
L : MUTE ON, Hi-Z : MUTE OFF
L : MUTE ON, Hi-Z : MUTE OFF
L : MUTE ON, Hi-Z : MUTE OFF
TEL MUTE : 1V or less
NAVI MUTE : 2.5V or more
Output L-fixed
H : Reset, L : Normal
L : MUTE ON, Hi-Z : MUTE OFF
Output L-fixed
Connect to P_ON
Connect to VCC