Kenwood TK-90, Service Manual

Page: 46 / 142

TK-90
46
3. Panel Microcomputer:
30302MAP150GU (Display unit IC3)
Pin No. Port Name I/O Function
1~4 NC O NC
5 SHIFT O NC
6 BYTE I External data bus changeover input
7 CNVSS I Processor mode changeover input
8,9 NC O NC
10 RST I Reset input
11 XOUT O Main clock output (14.7456MHz)
12 VSS I GND
13 XIN I Main clock input (14.7456MHz)
14 VCC1 I Power source input
15 NMI I NMI interruption input
16 BLC2 O MIC backlight control
17 BLC1 O Key & LCD backlight control
18 DIMM O Dimmer control
19 GRE O LED green
20 RED O LED red
21 NC O NC
22 LCK O LCD serial clock
23 LDT O LCD serial data
24 LCS O LCD chip select
25 LRES O LCD reset
26 NC O NC
27 RXD2 I Serial data input (From main MCU)
28 TXD2 O Serial data output (To main MCU)
29 PTT/TXD1 O NMI interruption input
30 NC I NC
31 DM I/O MIC keypad detection control
32,33 NC I NC
34 RXD0 I Serial data input (Communication
with microphone connector)
35~59 NC O NC
60 VCC2 I Power source input
61 NC O NC
62 VSS I GND
63~82 NC O NC
83 S10 I Front panel key ( )
84 S9 I Front panel key ( )
85 S8 I Front panel key ( )
86 S7 I Front panel key ( )
87 S6 I Front panel key ( )
88 S5 I Front panel key ( )
89 S4 I Front panel key ( )
SEMICONDUCTOR DATA /
!"
PK=
!"#
W
====PMPMOj^mNRMdr=Eaáëéä~ó f`PF
!
L
NúQ k`
R pefcq
S _vqb
!"#$%&'
T `kspp
!"#$%&
UIV k`
NM opq
!
NN ulrq
!"
=ENQKTQRSjeòF
NO spp dka
NP ufk
!"
=ENQKTQRSjeòF
NQ s``N
!
NR kjf kjf
!
NS _i`O
!"#$
NT _i`N i`a
!
NU afjj
!"
NV dob iba
OM oba iba
ON k`
OO i`h i`a
!
OP iaq i`a
!
OQ i`p i`a
!
OR iobp i`a
OS k`
OT ouaO
!"#
=E j`rF
OU quaO
!"#
=E j`rF
OV mqqLquaN kjf
!
PM k`
PN aj L
!"#$%&
POIPP k`
PQ ouaM
!"#
E
!"#$%&
F
PRúRV k`
SM s``O
!
SN k`
SO spp dka
SPúUO k`
UP pNM
!"
=E F
UQ pV
!"
=E F
UR pU
!"
=E F
US pT
!"
=E F
UT pS
!"
=E F
UU pR
!"
=E F
UV pQ
!"
=E F