Kenwood KDC-MP638U Service Manual page 13

MICROCOMPUTER'S TERMINAL DESCRIPTION
● PANEL MICROCOMPUTER 703265HYJA501 (X16-625: IC4)
Pin No. Pin Name
1 AVREF0
2 AVSS
3,4 NC
5 AVREF1
6 ROTARY1_CW
7 ROTARY1_CCW
8 FLMD0
9 VDD
10 REGC
11 VSS
12 X1
13 X2
14 PAN RST
15 XT1
16 XT2
17,18 NC
19 SC_CON
20 NC (DRST)
21 SYS_REQ
22 NC
23 FL_DATA1
24 FL_CLK IN1
25 FL_DATA2
26 NC
27 FL_CLK
28 FLGCP
29 FL EN
30,31 NC
32 PAN REQ
33 EVSS
34 EVDD
35 PAN_DATA
36 SYS_DATA
37 PWM_VOL
I/O Application
-
-
O
-
I Rotary 1 B input (For VOL)
I Rotary 1 A input (For VOL)
I
-
-
-
I Clock input
- Clock output
I Input from mother μ-com
I
-
O
System μ-com communication panel operation
I
control
O JTAG terminal
I System μ-com communication request input
O
O FL Serial control data SI1
I Serial sync clock input
O FL Serial control data SI2
O
O FL Serial communication reference clock
O FL tone control
O DATA ENABLE terminal
O
O Panel communication request output
O Data transmission from the panel
I Data reception from system μ-com
O Illumi control of VOL
KDC-MP638U/W7041U
/W7141UY/X692/X7009U
Processing / Operation / Description
3.3V: Always connect to the power supply.
0V: Always connect directly to ground.
Output LOW fi xed
3.3V: Always connect to the power supply.
1 pulse/2 clicks
15 pulses/360°
1 pulse/2 clicks
15 pulses/360°
Rand is required.
PULL DOWN 10kΩ
3.3V: Always connect to the power supply.
Connect to ground (4.7μ).
0V: Always connect directly to ground.
4MHz
4MHz
LOW: Reset
Not used
Not used
Output LOW fi xed
H: Panel operation
Use JTAG terminal only at fl ash
Mask is open.
H: During data communication
Output LOW fi xed
Sync to FL_CLK
Writing terminal 1
Output LOW fi xed
Writing terminal 1
Reference clock
Control lighting time (brightness tone)
with the pulse interval
H: Skip odd numbers
L: Skip even numbers
Output LOW fi xed
H: During data communication
UART communication 500kbps
UART communication 500kbps
LED ON: HI
LED OFF: LOW
13