Kenwood TK-90 Service Manual page 125

A
TK-90
KPE-2 (ALE UNIT /
ACCESSORY UNIT (X42-3290-20)
1
X1
L77-3001-05
VC VCC
GND OUT
2
12.288MHz
3
WRST
WCNV
WTXD
WRXD
WCLK
WBSY
DGND
4
Q1
DTC114EKA
5
RTC/SRAM_VDD
X21
L77-1802-05
32.768kHz
6
CN22
B-side
D21
1SS388F
R22
5.6k(G)
CN21
J19-5386-05
W09-0971-05
7
R21
3.9k(G)
5BTT
128
X42-329 1/2
B
L100
10u
IC13
TC7WU04FU-F
R102
1 1A VCC 8
330
2 3Y 1Y 7
3 2A 3A 6
4 GND 2Y 5
DGND
1 P94
2 P93
3 P92
CP3 4 BAUD
BAUD
5 SQC
SQC
6 BYTE
100
7 CNVSS/(WCNV)
CNVSS
R3 47k
8 SSEL1
9 P86
R4 100
10 RESET/(WRST)
RESET
11 XOUT
C3
12 VSS
CPU_XIN
0.01u 13 XIN
14 VCC1
15 NMI
R5 100
16 INTRA
INTRA
R6 100
17 HINT
HINT
R7 100
18 RXDINT
RXD0
19 P81
20 P80
R16 100
21 DINT
DINT
RESET
R17 100
22 DRST
DRST
CNVSS
23 YOBI1
WTXD
24 YOBI2
WRXD
25 YOBI3
WCLK
WBSY
HOLD
R8 47k
C5
0.01u
IC3
CAT24C256WIG3
4 5
VSS SDA
3 6
A2 SCL
2 7
A1 WP
1 8
A0 VCC
C25
0.01u
IC2
RV5C386A
6 5
INTRA
VSS
7 4
CLKC
INTRB
8 3
OSCOUT
SDA
9 2
OSCIN
SCL
10 1
VDD
32KOUT
C
!"#$
DSP_XIN
R105
0
IC1
3062LFGPUKBNA
DGND
3C_CPU
DGND
D E
)
75
AMU
R15
74
PTT
PTT
100
73
TXC
TXC
72
AUXIN
RESET
71
BKC
70 A0
A0
69 CP16
A1
A1
68
A2
A2
67
A3 A3
100
66
A4 CP17 A4
65
A5
A5
64
A6
A6
100
63
A7
A7
C7
62
VSS
61 0.01u
A8
60
VCC2
A8
S-80942CNNB-G
59 CP18
A9
A9
58
A10
A10
57
A11 100 A11
56
A12
A12
55 CP19
A13
A13
54
A14
A14
53
A15
100 A15
52
A16
A17 51
CP14
47k
IC5
HD74LV541AT
11 10
Y8 GND
12 9
Y7
SQC A8
13 8
BAUD Y6 A7
14 7
Y5
BIO A6
R34 15 6
BKC
Y4
A5
0 16 5
Y3
TXC A4
17 4
CTS0 Y2 A3
18 3
Y1
RXD0 A2
19 2
G2
A1
20 1
VCC G1
C31
3C_CPU
0.01u
C32
R33
10
0.01u
IC6
HD74LV541AT
1 G1 20
VCC
2 A1 19
BUSY G2
3 A2 18
Y1
DCD
4 A3 17
Y2
MMU
5 A4 16
Y3
AMU
6 A5 15
Y4
PTT
7 A6 14
Y5
RTS0
8 A7 13
Y6
TXD0
9 A8 12
Y7
10 GND 11
Y8
3C_CPU
DGND
IC14
3 CD 2
VDD
4 oUT 1
VSS
RSV1
_BAUD
_BIO
BKC
_TXC
CTS
RXD
5C
ABSY
ADCD
ARDY
RSV2
APTT
RTS
TXD
5BTT