Panasonic KX-MB771GR Service Manual

Contents

18KX-MB771GRDescription of Pin Distribution (IC300) SOC (System On Chip)PIN NO. PinName I/O POWER SUPPLY VOLTAGE EXPLANATIONA02 LEDONB O 3.3V SCANNER INTERFACEA03 NCCDON O 3.3V SCANNER INTERFACEA04 AFEMCLK O 3.3V SCANNER INTERFACEA05 NCCDCP O 3.3V NOT USEDA06 CCDCLK O 3.3V NOT USEDA07 PIO29 O 3.3V OPERATION PANEL INTERFACEA08 PIO57 O 3.3V CARRIAGE MOTOR INTERFACEA09 PIO53 O 3.3V CARRIAGE/ADF MOTOR INTERFACEA10 PIO50 O 3.3V CARRIAGE/ADF MOTOR INTERFACEA11 PIO46 O 3.3V FAN1 CONTROLA12 PIO42 O 3.3V DC MOTOR INTERFACEA13 NFRCE O 3.3V FLASH MEMORY CHIP SELECTA14 FRMD0 I/O 3.3V FLASH MEMORY DATA BUS 0A15 FRMD3 I/O 3.3V FLASH MEMORY DATA BUS 3A16 FRMD7 I/O 3.3V FLASH MEMORY DATA BUS 7A17 FRMA3 O 3.3V FLASH MEMORY ADDRESS BUS 3A18 FRMA6 O 3.3V FLASH MEMORY ADDRESS BUS 6A19 FRMA10 O 3.3V FLASH MEMORY ADDRESS BUS 10A20 THRMAVDD - 3.3V POWER SUPPLYA21 FRMA11 O 3.3V FLASH MEMORY ADDRESS BUS 11A22 FRMA15 O 3.3V FLASH MEMORY ADDRESS BUS 15A23 FRMA17 O 3.3V FLASH MEMORY ADDRESS BUS 17A24 FRMA20 O 3.3V FLASH MEMORY ADDRESS BUS 20A25 FRMA22 O 3.3V FLASH MEMORY ADDRESS BUS 22AA01 SDMD8 I/O 3.3V SDRAM DATA BUS 8AA02 SDMD9 I/O 3.3V SDRAM DATA BUS 9AA03 SDMA7 O 3.3V SDRAM ADDRESS BUS 7AA04 SDMA6 O 3.3V SDRAM ADDRESS BUS 6AA23 VDD1.2 - 1.2V POWER SUPPLYAA24 AFERST O 3.3V NCU INTERFACEAA25 RING I 3.3V NCU INTERFACEAA26 EXTINT I 3.3V NCU INTERFACEAB01 SDMD10 I/O 3.3V SDRAM DATA BUS 10AB02 SDMD11 I/O 3.3V SDRAM DATA BUS 11AB03 SDMA5 O 3.3V SDRAM ADDRESS BUS 5AB04 VDD1.2 - 1.2V POWER SUPPLYAB23 VSS - GND GNDAB24 BTXD O 3.3V NCU INTERFACEAB25 BRXD I 3.3V NCU INTERFACEAB26 AFECLK O 3.3V NCU INTERFACEAC01 SDMD12 I/O 3.3V SDRAM DATA BUS 12AC02 SDMD13 I/O 3.3V SDRAM DATA BUS 13AC03 SDMA4 O 3.3V SDRAM ADDRESS BUS 4AC04 VSS - GND GNDAC05 VSS - GND GNDAC06 VDD1.2 - 1.2V POWER SUPPLYAC07 TXD0 O 3.3V ETHERNET INTERFACEAC08 TX_ER O 3.3V ETHERNET INTERFACEAC09 RXD1 I 3.3V ETHERNET INTERFACEAC10 VDD3.3 - 3.3V POWER SUPPLYAC11 TEST I 3.3V NOT USEDAC12 USBREXT I 3.3V USB INTERFACEAC13 VDD1.2 - 1.2V POWER SUPPLYAC14 VDD3.3 - 3.3V POWER SUPPLYAC15 USBXIN I 3.3V CRYSTAL(12MHz) INPUTAC16 LSI_SCAN_ENABLE I 3.3V NOT USEDAC17 VDD1.2 - 1.2V POWER SUPPLYAC18 NWDTRST O 3.3V WATCH DOG TIMER RESET OUTPUTAC19 LSI_TN I 3.3V NOT USEDAC20 PSCIO2 I 3.3V INPUT PORT (FANDET1)AC21 PSCIO6 O 3.3V NOT USEDAC22 VDD1.2 - 1.2V POWER SUPPLYAC23 VSS - GND GNDAC24 ATXD O 3.3V NCU INTERFACEAC25 BBITCLK I/O 3.3V NCU INTERFACE