Audio Processor : Tc35453F (Tx-Rx Unit : Ic13) - Kenwood TK-380 Service Manual

Kenwood tk-380 uhf fm transceiver service manual
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TK-380

Audio Processor : TC35453F (TX-RX Unit : IC13)

Block diagram
Pin function
Pin
Port
I/O
No. Name
1
RXFO
O
RX audio filter output.
2
RXGS
O
RX audio signal level setting amplifier
output.
3
RXIN
I
RX audio signal level setting amplifier input.
4
FFSKGS
O
FFSK RX level setting amplifier output.
5
FFSKIN
I
FFSK RX level setting amplifier input.
6
TXOUT
O
TX signal output.
7
IDCGS
O
IDC input level setting amplifier output.
8
IDCIN
I
IDC input level setting amplifier input.
9
TXFO
O
TX audio filter circuit output.
10
AGND
-
Analog reference voltage stabilization.
11
CST
I/O
Compressor stabilization.
12
MICIN
I
Microphone amplifier input.
13
MICGS
O
Microphone amplifier output.
14
CALC
I/O
ALC Circuit response time setting.
15
ALCO
O
ALC circuit output.
16
CMPIN
I
Compressor input.
17
CCHG
I/O
Compressor response time setting.
18
CMPO
O
Compressor output.
19
TXFI
I
TX audio filter input.
20
VDDA
-
Analog power supply.
21
VDDD
-
Digital power supply.
22
STB
I
Data strobe pulse input / system reset input 1.
23
DIN
I
Data input.
28
SEMICONDUCTOR DATA
Function
Pin
Port
I/O
No. Name
24
DCK
I
Data synchronized clock input.
25
REGS1
I
Internal register select input 1
26
REGS2
I
Internal register select input 2.
27
XOUT
O
Oscillation circuit output.
28
XIN
I
Oscillation circuit input.
29
FFSKE
I
FFSK modulation enable input.
30
TRD
O
FFSK modulation data latch timing output.
31
RTM
O
FFSK RX synchronized clock output.
32
RDT
O
FFSK RX data output.
33
FCLR
I
F l a m e d e t e c t c i r c u i t r e s e t i n p u t 1
System reset input 2.
34
VSSD
-
Digital ground.
35
VSSA
-
Analog ground.
36
FFSKST
I/O
FFSK modem demodulation circuit
stabilization.
37
PWROP
O
Speaker operation positive output.
38
PWRON
O
Speaker operation negative output.
39
PWRGS
O
RX output level setting amplifier output.
40
PWRIN
I
RX output level setting amplifier input.
41
EXPO
O
Expander output.
42
ECHG
I/O
Expander response time setting.
43
EXPGS
O
Expander input level setting amplifier output.
44
EXPIN
I
Expander input level setting amplifier input.
Function

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