Sharp GX20 Service Manual - Page 125

2-C) RTS TXON RXD GENIE_CHG CONFIDENTIAL 15 TXON TXD 26 16 RTS CD 25 17 VEXT_ON ADIN_B 24 18 GENIE_CHG VT 23 19 RXD POWONKEY 22 20 NC NC POWONKEY 21 ADIN_B TXD CD GX20 POWONKEY KEYPADCOL[0] KEYPADCOL[1] KEYPADCOL[2] KEYPADCOL[3] KEYPADCOL[4] 5-30 (1-F) TCXOOUT G C352 0.01 JAKMIC SIMRST SIMIO SIMCLK 5-30 (1-G) AFCDAC G G RAMPDAC 5-30 (2-D) VINT 5-24 (3-F) VSIM 5-26 5-24 (2-F) (2-C) VBAT_BB CHGIN CN306 NC 1 NC VBAT_BB 40 2 KEYPADCOL0 VBAT_BB 39 3 KEYPADCOL1 KEYPADROW2 38 4 KEYPADCOL2 KEYPADROW0 37 5 KEYPADCOL3 KEYPADROW1 36 6 KEYPADCOL4 KEYPADROW3 35 7 DGND KEYPADROW4 34 8 TCXOOUT DGND 33 9 DGND MIC 32 10 JAKMIC MIC_GND 31 11 DGND JAKEAR 30 12 DGND KEY_BL_ON 29 13 SIMRST BS2 28 14 SIMIO BS1 27 15 SIMCLK BS0 26 16 VSIM VINT SYNTHDATA 25 17 VINT VSIM 24 SYNTHCLK 18 AFCDAC SYNTHEN 23 19 RAMPDAC CHGIN 22 MIC MIC_GND JAKEAR KEY_BL_ON BS2 BS1 BS0 SYNTHDATA SYNTHCLK SYNTHEN 20 NC NC NC 21 NC KEYPADROW[2] KEYPADROW[0] KEYPADROW[1] KEYPADROW[3] KEYPADROW[4] G G 5-30 (2-B) G G 5-30 (2-G) G G 5-30 (2-F) RERAY FPC_B PWB-D 5-18 (2-E) ( ) : Not Mount 7 8 The numbers 1 to 3 are waveform numbers shown in page 5-2. 9 10 11 12 Figure 24 SCHEMATIC DIAGRAM (22/24) 5 - 29