Kenwood TS-2000, Руководство по обслуживанию

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35
TS-2000/X
No. Name I/O Function
84 Vcc I 3.3V.
85 EXTAL I Crystal oscillator 11.0592MHz.
86 Vss – GND.
87,88 NC I
89 PVcc I 3.3V.
90 PHD I Phase comparison detection instruction
input.
91 Vss – GND.
92 NC O
93 HRD O External address space lead pin.
Normally : H
94 HWR O External space write strobe (D15~D8).
95 BACKUP I Voltage reduction interrupt.
96 WAIT I Bus cycle wait state request.
97 FEN2 O Final serial-parallel enable 2 (AT).
98 FEN1 O Final serial-parallel enable 1 (LPF).
99,100 NC –
101 Avcc I 5V.
102 VREF I 5V.
103 MSM I Main SM voltage input.
104 SSM I Sub SM voltage input.
105 AXC I SW (VSF/MALT).
106 AYC I SW (VSR/SALT).
107 AZC I SW (MSQ/SMQ).
SEMICONDUCTOR DATA
No. Name I/O Function
108 BXC I SW (MPU/MDN/ALC/Reserve).
109 BYC I SW (THHF/THU/TH12/TEST).
110 PCHECK I Panel CPU connection check input signal.
111 DTDT I DTMF decoder data input.
112 NAR I VS-3 serial data input permission judgment.
113 EOM I DRU-3 message end judgment.
114 KYS I Key jack connection judgment.
115 CTS0 I UART operation instruction input from
main unit panel.
116 KEY I Key down instruction.
117 PKSA I Packet transmission instruction input.
118 SS I PTT transmission instruction input.
119 AVss – GND.
120 LICS O Input latch control chip select.
121 LOCS O Output latch control chip select.
122 DTSTD I DTMF decoder analysis end signal.
123 EDA I EEPROM data input.
124 EEN O EEPROM enable.
125 RST0 O UART operation instruction output to
main unit panel.
126 RXD3 I Data input from TNC.
127 TXD3 O Data output to TNC.
128 MD0 I Operation mode setting pin 0.
Connect to Vss.