Kenwood TKR-851 Service Manual

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TKR-85118■ Pin FunctionPin No. Name I/O Function1 IO5 I/O Aux I/O No.5 (Acc D-sub 25 pin)2 IO4 I/O Aux I/O No.4 (Acc D-sub 25 pin)3 5TN I 5-tone input4 IO2 I/O Aux I/O No.2 (Acc D-sub 25 pin)5 IO1 I/O Aux I/O No.1 (Acc D-sub 25 pin)6 BYTE – 5V7 CNVss – GND8 ENT O TX PLL IC enable9 ENR O RX PLL IC enable10 Reset I Microcomputer reset input11 Xout – 14.7456MHz12 Vss – GND13 Xin – 14.7456MHz14 Vcc – 5V15 NMI – Not used16 BUP I Backup battery detectH : Backup, L : Main17 TEMP I Temperature detect for fan actionH : Temp high, L : Temp low18 INTy I INT request from DSP19 CLK O Common clock20 DAT O Common data21 SFT O Beat shift H : On, L : Off22 LD1 O Control D/A converter LD23 IO3 I/O Aux I/O No.3 (Acc D-sub 25 pin)24 BEEP O Beep output25 LD2 O D/A converter 2LD26 RS O DSP reset H : Off, L : On27 EPTT O Acc PTT (Acc D-sub 25 pin)H : Off, L : On28 PTT I Mic PTT H : Off, L : On29 TXD1 O Mic TXD30 RXD1 I Mic HOOK/RXD31 SCLK O EEPROM clock32 SDAT I/O EEPROM data33 TXD0 O Acc TXD (Acc D-sub 25 pin)34 RXD0 I Acc RXD (Acc D-sub 25 pin)35 CP O PLL IC clock36 DP O PLL IC data37 RDY I CPU ready inputPin No. Name I/O Function38 ALE – Not used39 HOLD – Not used40 HLDA – Not used41 BCLK O Not used42 RD O Flash ROM WR/DSP HDS143 BHE – Not used44 WR O Flash ROM WR/DSP HDS245 STB2 O Control shift register STB46 INTx O DSP interrupt H : Off, L : On47 HCS O DSP HCS48 CS0 O Flash ROM CS49 A19 O Not used50~59 A18~A9 O Flash ROM address bus60 Vcc – 5V61 A8 O Flash ROM address bus62 Vss – GND63~70 A7~A0 O Flash ROM address bus71 EMON I Acc monitor (Acc D-sub 25 pin)H : Off, L : On72 LDR I RX VCO lock detectH : Lock, L : Unlock73 LDT I TX VCO lock detectH : Lock, L : Unlock74,75 KEY5,KEY4 O Key matrix output76~78 KEY3~KEY1 I Key matrix input79~86 D7~D0 I/O Flash ROM data bus87 FWD I RF power down level input88 RSSI I RSSI level input89 ASQ I Squelch level input90 VLI I Volume level input91 BATT I Power supply voltage level input92 AI1 I Aux input No.1 (Acc D-sub 25 pin)93 AI2 I Aux input No.2 (Acc D-sub 25 pin)94 AVss – GND95 AI3 I Aux input No.3 (Acc D-sub 25 pin)96 Vref – 5V97 AVcc – 5V98 STB1 O Display shift register STB99 SOE O Shift register common OE100 IO6 I/O Aux I/O No.6 (Acc D-sub 25 pin)SEMICONDUCTOR DATAMain CPU : 30622M4A-487GP (TX-RX unit IC604)