Kenwood TS-990S Service Manual

Also see for SP-990: Instruction manual

Contents

TS-990S69SEMICONDUCTOR DATAPin No. Name I/O Function22 GND - GND23 VDDINT I Internal (core) supply voltage (1.2V)24 AD6 I/O Address/Data bus for fl ash memory25 AD5 I/O Address/Data bus for fl ash memory26 AD4 I/O Address/Data bus for fl ash memory27 VDDINT I Internal (core) supply voltage (1.2V)28 GND - GND29 AD3 I/O Address/Data bus for fl ash memory30 AD2 I/O Address/Data bus for fl ash memory31 VDDEXT I External (I/O) supply voltage (3.3V)32 GND - GND33 AD1 I/O Address/Data bus for fl ash memory34 AD0 I/O Address/Data bus for fl ash memory35 nWR O Write enable for fl ash memory36 VDDINT I Internal (core) supply voltage (1.2V)37 VDDINT I Internal (core) supply voltage (1.2V)38 GND - GND39 nRD O Output enable for fl ash memory40 ALE O Address latch enable for address de-coder41 AD15 O Address bus for fl ash memory42 AD14 O Address bus for fl ash memory43 AD13 O Address bus for fl ash memory44 GND - GND45 VDDEXT I External (I/O) supply voltage (3.3V)46 AD12 O Address bus for fl ash memory47 VDDINT I Internal (core) supply voltage (1.2V)48 GND - GND49 AD11 O Address bus for fl ash memory50 AD10 O Address bus for fl ash memory51 AD9 O Address bus for fl ash memory52 AD8 O Address bus for fl ash memory53 SCLK96K I Audio serial I/F (BICK) form SRX-DSP54 VDDINT I Internal (core) supply voltage (1.2V)55 GND - GND56 LRCK96K I Audio serial I/F (LRCK) form SRX-DSP57 SCLK48K I Audio serial I/F (BICK) form fl ipfl op58 GND - GND59 VDDEXT I External (I/O) supply voltage (3.3V)60 VDDINT I Internal (core) supply voltage (1.2V)61 GND - GND62 LRCK48K I Audio serial I/F (LRCK) form fl ipfl op63 M_SDTI1 I Audio serial I/F (data) form ADC (IC398)64 SDMI-SO1 O Audio serial I/F (data) for SRX-DSPPin No. Name I/O Function65 M_SDTO2 O Audio serial I/F (data) for DAC (IC397)66 VDDINT I Internal (core) supply voltage (1.2V)67 GND - GND68 VDDINT I Internal (core) supply voltage (1.2V)69 GND - GND70 SDMI-SO0 O Audio serial I/F (data) for SRX-DSP71 SDMO-SI0 I Audio serial I/F (data) from SRX-DSP72 VDDINT I Internal (core) supply voltage (1.2V)73 VDDEXT I External (I/O) supply voltage (3.3V)74 GND - GND75 VDDINT I Internal (core) supply voltage (1.2V)76 GND - GND77 SDMO-SI1 I Audio serial I/F (data) from SRX-DSP78 AVOX O VOX transmit (ANI) signal output to DSP-sub MCU79 TXC I TX ON/OFFH: TX ON80 SCP I Discriminate SCP form TXMRXL: TXMRX81 MCTDET O CTCSS detection signal outputH: CTCSS detection82 MDHLT O TXMRX-DSP check signal to DSP-subMCU83 VDDINT I Internal (core) supply voltage (1.2V)84 GND - GND85 GND - GND86 MABK1 I AF blanking signal inputH: Mute87 CKY I RF power ON/OFFH: Power ON88 MVOX O VOX transmit (MIC) signal output toDSP-sub MCU89 MIBK I IF blanking signal inputH: Mute90 VDDINT I Internal (core) supply voltage (1.2V)91 GND - GND92 GND - GND93 VDDEXT I External (I/O) supply voltage (3.3V)94 MABK2 I AF blanking signal inputH: Mute95 GND - GND96 VDDINT I Internal (core) supply voltage (1.2V)97 RTK I PTTY key signal form ACC298 RYBY I Rady/Busy signal from fl ash memory99 VDDINT I Internal (core) supply voltage (1.2V)100 GND - GND