Kenwood DDX6027 Service Manual page 20

DDX6027/6027Y/7017
DDX7037/7047/7067
MICROCOMPUTER'S TERMINAL DESCRIPTION
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
78 TYPE0
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
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
FLASH I Data input at the flash writing
LX_M I Data from slave unit
FLASH O Data output at flash writing
Truth Value
Application
Table
u
u
u
y
y
u
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
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