Kenwood TK-80 Service Manual
Also see for TK-80: Service manual
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TK-8022Pin No. Pin Name Port Name I/O Description41 RD P21 O Expansion I/O RD signal. H: Normal, L: RD42 WR P20 O Expansion I/O WR signal. H: Normal, L: WR43~50 D7~D0 P17~P10 O False data path51 BSY P07 O Packet busy output. H: Busy, L: Normal52 KEY P06 I Key input. H: No input, L: Input53 KYS P05 I Key plug attachment decision. H: Attached, L: Not attached54 ODEN P04 O Expansion I/O reset output. H: Reset, L: Normal55 TSI P03 I External AT control input56 TTI P02 I External AT control input57 ATI P01 I Internal AT attachment decision. H: Not attached, L: Attached58 THP P00 I Power down request during temperature protection. H: Protection actuation, L: Normal59 TXD TXD1 O Uart data output60 RXD RXD1 I Uart data input61 RTS P85 O Uart reception authorization output. H: Reception not allowed, L: Reception allowed62 CTS CTS1 I Uart transmission authorization output. H: Transmission not allowed, L: Transmission allowed63 ABSL TXD0 O Selective call code transmission uart data outputP83 O Local DDS, PLL register selection. H: Register B, latch V1, L: Register A, latch V264 FSD RXD0 I Selective call uart data input65 P81 P81 I GND66 CTS0 CTS0 I Selective call transmission authorization input. H: Transmission not allowed, L: Transmission allowed67 Vcc Vcc I Power supply68 AVcc AVcc I A/D power supply69 Vref Vref I A/D reference power supply70 AVss AVss I A/D GND71 Vss Vss I GND72 POD1 AN7 I Variable condenser 1 VR, A/D input73 POD2 AN6 I Variable condenser 2 VR, A/D input74 VSRM AN5 I Reflection wave voltage, A/D input75 VCL AN4 I Clarifier VR, A/D input76 VSQL AN3 I Squelch VR, A/D input77 VSFM AN2 I RF meter voltage (progression wave voltage), A/D input78 SM AN1 I S-meter voltage, A/D input79 VDLY AN0 I VOX delay VR, A/D input80 SS P67 I Send switch input. H: No input, L: InputI/O Port: UPD71055GB-3B4 (Control unit IC7)Pin No. Pin Name Port Name I/O Description1 NC NC - Not used2 CS CS I Chip select input3 GND GND I GNDSEMICONDUCTOR DATA |
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