Kenwood TS-990S Service Manual

Also see for SP-990: Instruction manual

Contents

TS-990S60SEMICONDUCTOR DATAMain MCU: F56104VDFKEUA(Control unit IC46)Pin No. Name I/O Function1 TXD4 O E1 emulator communication2 UL I Un-lock detectH: Lock3 SSMET O Sub RX S-meter voltage4 MSMET O Main RX S-meter voltage5 AVSS - Analog GND6 TRST# I E1 emulator communication7 VRXD I Virtual com port received data8 VTXD O Virtual com port transmitted data9 DOT I Electronic keyer dot signalL: KEY dot10 EMLE I E1 emulator communication11 TDO O E1 emulator communication12 VSS - GND13 MDE I Endianness settingL: Little endianness14 VCL - Power terminal15 MD1 I E1 emulator communication16 MD0 I E1 emulator communication17 DASH I Electronic keyer dash signalL: KEY dash18 PKSR I PTT output for data communicationL: PTT ON19 MRESET I Reset20 XTAL I X'tal input21 VSS - GND22 EXTAL O X'tal output23 VCC - 3.3V power24 NMI I Interrupt terminal (no use)25 UVBINT I USB connect interrupt inputH: Connect26 BOVER I Over voltage detectionL: Over voltage27 BKC I Reduced voltage detection interruptL: Reduced voltage28 RTINTA I RTC interrupt A29 PWS I Power SW30 SS I Standby switchL: TX ON31 DTXD O Transmitted data for DSP MCU32 DRXD I Received data from DSP MCU33 NC(DCFV) O “L” output34 KEY1 IKEY down signal/ Electric keyer dotsignalL: KEY down/ KEY dotPin No. Name I/O Function35 KEY2 IKEY down signal/ Electric keyer dashsignalL: KEY down / KEY dash36 PRXD I Received data from panel MCU37 PTXD O Transmitted data for panel MCU38 ATXD O Transmitted data for application MCU39 PLLVcc - 3.3V power for PLL40 ARXD I Received data from application MCU41 PLLVss - GND for PLL42 RTCL I/O RTC communicatio clock43 RTDA I/O RTC communicatio data44 STXD O Transmitted data for scope MCU45 SRXD I Received data from scope MCU46 PFPRG I/OProgramming mode request for panelMCUL: Programming mode47 KYSR I KEY jack judgement signalL: Plugged48 CLK O Common serial clock49 DATA O Common serial data50 SCTS I RTS signal input from scope MCUL: Communication permit51 SRTS O RTS signal output to scope MCU52 NC - No connection53 NC - No connection54 NC - No connection55 NC - No connection56 SFPRG I/OProgramming mode request for scopeMCUL: Programming mode57 Vss - GND58 NC - No connection59 Vcc - 3.3V power60 NC - No connection61 DRST O Reset for DSP MCU62 DCTS I RTS signal input from DSP MCUL: Communication permit63 DFPRG I/OProgramming mode request for DSPMCUL: Programming mode64 AHLT I Status of application MCUH: Normal65 ACTS I RTS signal input from application MCUL: Communication permit66 ARST O Reset for application MCU67 PCTS I RTS signal input from panel MCUL: Communication permit68 CCTS I RS-232C clear to send69 CTXD O RS-232C transmitted data70 CRXD I RS-232C received data