Microcomputer's Terminal Description - Kenwood DDX3028 Service Manual

MICROCOMPUTER'S TERMINAL DESCRIPTION

● SYSTEM μ-COM JVM496A (MAIN UNIT: IC701)
Pin No. Pin Name
1 VREF
2 AVCC
3~5 NC
6 BL_PWM
7 BUZZER
8 REMOCON
9 ST_REMO
10~12 NC
13 BYTE
14 CNVSS
15 XT1
16 XT2
17 RESET
18 XOUT
19 VSS
20 XIN
21 VCC1
22,23 NC
24 BATTERY
25 APP_CE
26 BT_MUTE_REQ
26 NC
27 BT_RX
27 NC
28 BT_RESET
28 NC
29 BT_TX
29 NC
30~32 NC
33 SW_freq_SEL
34 TUN_SCL
35 TUN_SDA
36 NAVI_TX
36 BOARDTEST_TX
37 VCC1
38 NAVI_RX
38 BOARDTEST_RX
39 VSS
I/O Application
-
-
O Not used
O Not used
O Buzzer output
I Infrared remote control input
I Steering remote control input
O Not used
-
-
- Sub-clock output
-
-
- Main clock output
-
-
-
O Not used
I Battery detection input
I Data transmission request input from application μ-com H: When data transmission requested
I Audio mute request input from Telechips (Bluetooth) Polling every 5ms, No chattering
O
I Data input from Telechips MODULE (Bluetooth)
O
O Reset output to Telechips MODULE (Bluetooth)
O
O Data output to Telechips MODULE (Bluetooth)
O
O Not used
Square wave output for controlling SW Regulator
O
for panel/DISC module
O Communication clock with tuner
I/O Communication data with tuner
O NAVI data output
O Substrate test mode data output
-
I NAVI data input
I Substrate test mode data input
-
DDX3028/3048/3058/318/4038/4038M
DDX4028BT/4038BT/4038BTM/4048BT/4058BT/418
Processing / Operation / Description
Output Low fi xed
PWM output
DATA input from remote control. NEC 16-bit
Not used
32.768kHz
15.6672MHz
H: Momentary power down, L: Stationary power
BT_EN port input Low model
= L output for general use
BT_EN port input Low model
= L output for general use
H: Reset clear, L: Reset
BT_EN port input Low model
= L output for general use
BT_EN port input Low model
= L output for general use
H (when square wave output): Power ON,
L: Power OFF
Drop down to 200kHz due to IC
If detected High at BOARD_TESTMODE port check
after reset clear
NaviReady is for transmit only
If detected High at BOARD_TESTMODE port check
after reset clear
7