Block Diagram - Kenwood TK-380 Service Manual

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 MSKGS O MSK RX level setting amplifier output.
5 MSKIN I MSK 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.
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 MSKE I MSK modulation enable input.
30 TRD O MSK modulation data latch timing output.
31 RTM O MSK RX synchronized clock output.
32 RDT O MSK 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 MS KST I/O M S K m o d e m d e m o d u l a t i o n c i r c u i t
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.
TK-380
Function
23