Sharp GX20 Service Manual - Page 153
IO Power supply 3.0 V 2.7 V~ 3.3 V
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CONFIDENTIAL Pin No. 119 120 121 122 123 124 125 126 127 128 129 Terminal name DB14 DB15 WAIT_B SUBFLMIN SUBCKS DA1 BSPIXEL1 BSPIXEL4 GND BSPIXEL5 SE_CK/PORT1 Input/Output Input/Output Input/Output Output Input Output Input/Output Input/Output Input/Output - Input/Output Output 130 SE_LD2/PORT5 Output 131 BUFOFF_B Input 132 133 134* VDDIO DUMMY2 SE_LD3/PORT6 - - Output 135 136 137 138 139 140* VDDIO SUBLPIN BSPIXEL2 BSPIXEL3 VDDCORE SE_DI/PORT7 - Input Input/Output Input/Output - Input/Output 141 SE_LD1/PORT2 Output 142 GND - 143 VDDCORE - 144 DUMMY1 - Description of terminal Data bus Data bus External wait signal ("Low" is active) Driver FLM signal input for External display Clock switching signal for External display Address input for chip select decode External Bit Stream data bus External Bit Stream data bus Logic ground External Bit Stream data bus Control clock for 4-wire serial IF (default) General-purpose PORT output Load signal 2 for 4-wire serial IF General-purpose PORT output (default) Buffer Gated switching signal for I/O through current prevention (High when Host_IF signal is activated) IO Power supply 3.0 V (2.7 V~ 3.3 V) Dummy 2 Load signal 3 for 4-wire serial IF General-purpose PORT output (default) IO Power supply 3.0 V (2.7 V~ 3.3 V) Driver LP input External display External Bit Stream data bus External Bit Stream data bus CORE Power supply 1.8 V (1.6 V~ 2.0 V) 4-wire serial input (default) General-purpose PORT output Load signal 1 for 4-wire serial IF (default) General-purpose PORT output Logic ground CORE Power supply 1.8 V (1.6 V~ 2.0 V) Dummy 1Dummy 4 In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside. GX20 6 - 21