Tx-Rx Unit (X57-6990-10) (B/3) - Kenwood TK-8180 Service Manual

Pin No. Name
J701 (ACC 25-pin)
1 NC Non-connenction.
2 RXD1 Serial data input 1. RS-232C level.
Input voltage range : ±30V max.
L≤0.4V, H≥2.4V, Zi≥5kΩ
3 TXD1 Serial data output 1. RS-232C level.
L≤–5V, H≥5V/3kΩ load, Zo≤2kΩ
4 AUXI/O9 AUX input/output 9.
Active low with 47kΩ pull-up to 5V
5 DI Data signal input.
Data input level adjustable (2.0Vp-p typ.)
6 MI2 External MIC input. DC-coupled
7 GND Ground.
8 AUXI/O8 AUX input/output 8. Same as AUXI/O9
9 TXD2 Serial data output 2. TTL level.
L≤0.7V, H≥4.2V/25kΩ load, Zo≤1kΩ
10 RXD2 Serial data input 2. TTL level.
Input voltage range : +5/0V max.
L≤0.8V, H≥4.2V
11 GND Ground.
12 AUXI/O7 AUX input/output 7. Same as AUXI/O9
13 AUXI/O6 AUX input/output 6. Same as AUXI/O9
14 SB Power output after power switch.
DC13.6V± 15%, 2.0A max.
15 AUXO2 AUX output 2. Open collector (500mA max.)
(Default none) L≤0.3V
16 AUXO1 AUX Output 1. Same as AUXO2
17 AFO RX filtered audio output (DC-coupled).
AF low level output.
Wide : 700mVp-p typ.
Narrow : 700mVp-p typ. (Standard modulation)
18 GND Ground.
19 DEO Detected signal output (DC-coupled).
AF output level adjustable (740mVp-p typ.)
20 AUXI/O5 AUX input/output 5. Same as AUXI/O9
21 AUXI/O4 AUX input/output 4. Same as AUXI/O9
22 AUXI/O3 AUX input/output 3. Same as AUXI/O9
23 AUXI/O2 AUX input/output 2. Same as AUXI/O9
24 AUXI/O1 AUX input/output 1. Same as AUXI/O9
25 ME MIC ground.
TERMINAL FUNCTION
Description

TX-RX unit (X57-6990-10) (B/3)

Pin No. Name
CN301 (to TX-RX unit C/3)
1 REF Reference signal otput to the PLL IC.
2 Fin Complementary signal output to the PLL IC.
3 CPGND Ground.
4 5C 5V output.
5 GND Ground
6 CP Signal input from charge pump block in the PLL IC.
CN302 (to TX-RX unit C/3)
1 UL Control signal input form the PLL IC.
2 PLE Control signal output to the PLL IC.
3 DT Control signal output to the PLL IC.
4 PCK Control signal output to the PLL IC.
5 GND Ground.
6 DGND Ground.
CN403 (to VGS-1)
1 OPT1 VGS busy signal input. Option boad I/F 1.
Output : L≤0.45V, H≥4.7V/25kΩ load
Input : L≤1.0V, H≥4.0V, Input voltage : 0V~5.0V
2 OPT3 VGS playback signal input. Option boad I/F 3.
Output : L≤0.45V, H≥4.7V/25kΩ load
Input : L≤1.0V, H≥4.0V, Input voltage : 0V~5.0V
3 RXD1 Serial data input.
Input : L≤1.0V, H≥4.0V, Input voltage : 0V~5.0V
4 TXD1 Serial data output / PTT singanl output (SC20-460).
Output : L≤0.45V, H≥4.7V/25kΩ load
5 CLK Serial clock output.
6 OPT4 VGS enable output. Option boad I/F 4.
Output : L≤0.45V, H≥4.7V/25kΩ load
7 USEL UART speed select output. L : 19200bps fixed
8 OPT5 VGS reset signal output. Option boad I/F 5.
Output : L≤0.45V, H≥4.7V/25kΩ load
9 DGND Ground.
10 AGND Ground.
11 AO VGS audio input. Zin≥10kΩ, 1Vp-p max,
Input Voltage : 0V~5.0V
12 AI VGS audio output. Zo≥10kΩ
13 AGND Ground.
14 5E 5V power supply output. 78mA max
15 STON Side tone input. 1kHz, 5Vp-p
TK-8180
Description
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