Acer S2W 3300U Service Manual - Page 31

GIO2[7:0] XMCUP1[7:4] XMCUP1[3:2] XMCUP1[1:0] XMCUP35 XMCUP31 XMCUP30 XMODESEL[2:0] 46-41,38-37 15,13-11 32-33 34-35 60 59 58 31-29 IO4 GIO Port 2 O4 MCU Port 1 IOD16 MCU Port 1 O16 MCU Port 1 IOD4 MCU Port 3.5 IOD4 MCU Port 3.1 IOD4 MCU Port 3.0 IS Operation Mode Select Power (14 pins) Pin Name VDD VCC GND Pin Number 4,47,68,106,118 86 14,24,53,56,82, 95,113,123 I/O P 5V Power P 3.3V Power P Ground Description Type Descriptions: IS O4 O8 O12 O16 IO4 IO12 IO16 IOD4 IOD16 ICLK OCLK USB Input with Schmidt Trigger Output with sink 4 mA, source 4 mA Output with sink 8 mA, source 8 mA Output with sink 12 mA, source 12 mA Output with sink 16 mA, source 16 mA Input/Output with sink 4 mA, source 4 mA Input/Output with sink 12 mA, source 12 mA Input/Output with sink 16 mA, source 16 mA Input/Output with open drain sink 4 mA Input/Output with open drain sink 16 mA CLK input at 24 MHz CLK output at 24 MHz USB transceiver 5.4 Analog Circuits This section describes the analog circuits on the Main Board. The readers here may refer to the next section for the other information about analog circuits on the CCD head. Figure 5.25 shows the structure block of analog signal processor A3568F. 3300U use the PLCC package A3568C. The differences are package and pin count definition. For QFP , the no.1 pin is mapped to no.7 of PLCC.