Kenwood DDX6027Y Service Manual page 20

DDX6027/6027Y/7017
DDX7037/7047/7067
QQ
MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Pin No. Pin Name
64 EEPROM_SCL
64 AUD_SCL
65 LX_CON
66 LX_REQ_M
67 LX_MUTE
68 LX_RST
69 SYS_MREQ
70 SYS_SREQ
71 AVDD
72 AVSS
73 AVREF
74 DC_ERR
75 LINE_MUTE
76 TYPE2
77 TYPE1
TE
78 TYPE0
L 13942296513
79 OEM_TYPE1
80 OEM_TYPE0
81 EEPROM_WRT
82 TYPE3
83 TUN_IFC_OUT
84 TUN_SMETER
85 RDS_NOISE
86 TV_SDATA
87 BU_DET
88 LX_REQ_S
89 SYS_ON
90 TV_SREQ
91 TV_MDATA
92 TV_MREQ
www
93 RDS_CLK
94 FLASH_SI
.
94 LX_DATA_S
95 FLASH_SO
20
Module
I/O
(physical)
EEPROM I/O Clock for EEPROM (ROM correction)
IC2 VI I/O Clock for IC2 VI
LX_M O Startup request for slave unit
LX_M O Communication request for slave unit
LX_M I MUTE request from slave unit
LX_M O Hard resetting to slave unit
Request from system control µ-com
to X14 I
Request to system control µ-com
to X14 O
µCOM
µCOM
µCOM
IC2 VI I DC offset detection
DC-CN I LINE MUTE detection
Type I Destination setting
Type I Destination setting
Type I Destination setting
OEM I OEM destination setting
OEM I OEM destination setting
EEPROM I Write detection at ROM correction
Type I Destination setting
FST I F/E IFC OUT input terminal
FST I S-meter input
FST I FM noise detection
TV I Data from TV unit
DC-CN I Backup reduced electric power detection
LX_M I Communication requests from slave unit
ON/OFF control from system control µ-com
to X14 I
TV I Requests from TV unit
TV O Data to TV unit
TV O Requests from TV unit
RDS I RDS decoder CLK input
x ao
y
FLASH I Data input at the flash writing
i
LX_M I Data from slave unit
FLASH O Data output at flash writing
8
Truth Value
Application
Table
u
u
Q Q
u
3 6 7 1 3
y
y
u
u163
.
2 9 9 4 2 8
Processing Operation Description
H: Slave unit ON, L: Slave unit OFF
H: MUTE ON, L: MUTE OFF
H: Reset, L: Normal
When detected: Low
Normal: 1.6V, TEL MUTE: 1V or lower
NAVI MUTE: 2.5V or higher
Refer to truth value table
Refer to truth value table
Refer to truth value table
1 5 0 5 8 2 9 9 4
Refer to truth value table
Refer to truth value table
When writing to E2PROM from outside,
Hi is input with a jig (Common use SCL
and SDA will stop operation)
In other cases, Low (Pull-down)
Refer to truth value table
H: With station, L: No station
Low at 8.8V or higher
Hi at reduced electric power (8.8V or lower)
H: Box unit ON, L: Box unit OFF
m
co
9 9
2 8 9 9