Panasonic KX-TG8421EB Service Manual

Contents

Panasonic KX-TG8421EB Service Manual Manual pdf 74 page image

74KX-TG8421E/KX-TG8422E/KX-TG8423E/KX-TG8424E/KX-TGA840E12.2. CPU Data (Handset)12.2.1. IC1 (BBIC)Pin No. Description I/O Connection at Normal mode at Reset mode1 VSS_LNA1 - GND - -2 RF_RXp A.I RF_RXp A.I A.I3 RF_RXn A.I RF_RXn A.I A.I4 VSS_LNA2 - GND - -5 RFP1 D.O RXON O_0/1 L6 RFP0 D.O ANT1 O_0/1 L7 REF_RES A.O REF_RES A.O A.O8 AVS_XTAL - GND - -9 XTAL2 A.I XTAL2 A.I A.I10 XTAL1 A.I XTAL1 A.I A.I11 AVD_XTAL - AVD_XTAL - -12 RF_SUPPLY1 - RF_SUPPLY1 - -13 LDO_CTRL A.O LDO_CTRL A.O H14 AVD - +1.8V - -15 LSRn A.O LSRn A.O A.O16 LSRp A.O LSRp A.O A.O17 VREFm - GND - -18 MICh A.I MICh A.I A.I19 CIDOUT/MICn A.I MICn A.I A.I20 CIDINn/MICp A.I MICp A.I A.I21 CIDINp/VREFp A.O VREFp A.O -22 RINGp/P3_7 D.O COL4 O_0/1 L23 RINGn/P3_6 D.O COL3 O_0/1 L24 RINGOUT/RINGING/P3_5D.O COL2 O_0/1 L25 PARADET/P3_4 D.O COL1 O_0/1 L26 ADC0/P3_3 D.O COL0 O_0/1 L27 ADC1/INT0/P1_0 - N.C. - L28 NTC/ADC2 A.I ADC2 A.I A.I29 SOCp A.I SOCp A.I A.I30 SOCn A.I SOCn A.I A.I31 CHARGE_CTRL A.O CHARGE_CTRL A.O A.O32 P1_7/CHARGE A.I CHARGE A.I I-PD33 PAOUTp/P3_1 A.O PAOUTp A.O L34 VDDPA - VDDPA - -35 PAOUTn/P3_0 A.O PAOUTn A.O L36 VBAT1 - VBAT1 - -37 CP_C1x A.O CP_C1x A.O A.O38 CP_C2x A.O CP_C2x A.O A.O39 CP_C1y A.O CP_C1y A.O A.O40 VBAT2 - VBAT2 - -41 CP_C2y A.O CP_C2y A.O A.O42 CP_VOUT1/LED1 A.O CP_VOUT1 A.O A.O43 CP_VOUT2/LED2 A.O CP_VOUT2 A.O A.O44 PON/P1_6 A.I PON A.I L45 VDD1 - +1.8V - -46 P2_7/BXTAL D.O COL5 D.O L47 P1_5/INT5/RDI/VDDE - N.C. - L48 P1_4/INT4/TDOD D.I ROW0 D.I I-PD49 P1_3/INT3/SIO D.I ROW3 D.I I-PD50 P1_2/INT2/SK D.I ROW2 D.I I-PU51 P1_1/INT1/LE D.I ROW1 D.I I-PU52 P2_6/WTF_IN D.O KEY_LED D.O L53 P0_7/SPI_DI D.O EEPROM_WP D.O I-PU54 P0_6/SPI_DO D.O LCD_SDA D.O L55 P0_5/SPI_CLK D.O LCD_SCL D.O L56 P0_4/SPI_EN D.O LCD_CD D.O L57 P0_3/SCL2 D.O SCL D.O L58 P0_2/SDA2 D.I/O SDA D.I/O L59 P0_1/URX D.I URX D.I I-PU60 P0_0/UTX D.O UTX D.O L61 RSTn D.O RSTn D.O I-PU