Panel Mcu - Kenwood TS-990S Service Manual

Pin No. Name I/O
203 VDDEXT I External (I/O) supply voltage (3.3V)
204 GND - GND
205 DATA30 I/O No connection (internal pull up)
206 DATA31 I/O No connection (internal pull up)
207 DATA29 I/O No connection (internal pull up)
208 VDDINT I Internal (core) supply voltage (1.2V)
Panel MCU: F3651KDFCKEXA
(Display unit IC6)
Pin No. Name I/O
1 VREF I A/D standard voltage input (5.0V)
2 AVCC I Power supply input (5.0V)
AT LED (green)
3 LAT O
H: Light
4 MPI3 I Multi plexer data input (A/D)
PROC key LED (green)
5 LPROC O
H: Light
6 SLPWM O Sub display backlight PWM control
7 MLPWM O Main display backlight PWM control
FBK LED (green)
8 LFBK O
H: Light
MONI LED (green)
9 LMONI O
H: Light
LC/HC encoder LED (yellow)
10 LHLENC O
H: Light
11 NC - Not used
Power on LED (green)
12 LPON O
H: Light
Single chipmode selection (Vss connec-
13 BYTE I
tion)
14 E8CNV I For E8a (fi rmware writing)
SPLIT LED (yellow & green)
15 LSPLIT O
H: Light
Main RX key LED (green)
16 LMRX O
H: Light
For reset
17 PRST I
L: Reset
18 XOUT O System clock output (11.0592MHz)
19 VSS - GND
20 XIN I System clock input (11.0592MHz)
21 VCC1 - Power supply input VCC1 (5.0V)
22 RITB I RIT encoder pulse B input
23 RITA I RIT encoder pulse A input
24 MPRE1 O Multi plexer control output for IC9
25 MPRE2 O Multi plexer control output for IC10
26 MENCB I Main encoder pulse B input
27 MENCA I Main encoder pulse A input
28 SENCB I Sub encoder pulse B input
SEMICONDUCTOR DATA
Function
Function
Pin No. Name I/O
29 SENCA I Sub encoder pulse A input
30 MPRE3 O Multi plexer control output for IC11
31 LEDBR O LED PWM control
32 PBLEN O Display backlight enable output
Backlight driver IC SYNC signal for sub
33 SLSYNC O
display
Main BEF LED (green)
34 LMBEF O
H: Light
Backlight driver IC SYNC signal for main
35 MLSYNC O
display
36 E8TXD O For E8a (fi rmware writing)
37 VCC1 I Power supply input VCC1 (5.0V)
38 E8RXD I For E8a (fi rmware writing)
39 VSS - GND
40 E8CLK O For E8a (fi rmware writing)
41 E8BSY O For E8a (fi rmware writing)
42 NC - Not used
< MAIN LED (green)
43 LMAIN O
H: Light
SUB > LED (green)
44 LSUB O
H: Light
VOX LED (green)
45 LVOX O
H: Light
Main TX Key LED (green)
46 LMTX O
H: Light
Sub RX Key LED (green)
47 LSRX O
H: Light
48,49 KI13,KI12 I Key scan input bit 13, 12
Sub TX key LED (green)
50 LSTX O
H: Light
Main busy LED (green)
51 LMBSYG O
H: Light
52 E8EPM O For E8a (fi rmware writing)
REC LED (red)
53 LREC O
H: Light
54~57 KI11~KI8 I Key scan input bit 11~8
Main TX LED (red)
58 LMBSYR O
H: Light
Sub busy LED (green)
59 LSBSYG O
H: Light
Sub TX LED (red)
60 LSBSYR O
H: Light
61 NC - Not used (external pull up)
Main lock LED (yellow)
62 LMLOCK O
H: Light
63,64 NC - Not used
The serial port for connection with the
65 PTXD O
main MCU
The serial port for connection with the
66 PRXD I
main MCU
TS-990S
Function
73