Sharp FO-77, Руководство по обслуживанию

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FO-77U
UX-66U
Operator Panel Interface
OPI[2]/GPIO[23]/ 50 I/O HU 2XC (Pullup, Hysteresis In) Keyboard return [2] or GPIO[23] or SSCLK1
SSCLK1 (for SSIF1)
OPI[3]/GPIO[24] 49 I/O HU 2XC (Pullup, Hysteresis In) Keyboard return [3] or GPIO[24]
LEDCTL 55 O
−
4XC Indicates outputs OPO[7:0] are for LEDs.
LCDCS 54 O
−
1XC LCD chip select.
General Purpose I/O
GPIO[0] 94 I/O H 2XC (Hysteresis In) GPIO[0].
GPIO[1]/SASTXD 93 I/O H 2XC (Hysteresis In) GPIO[1] or SASTXD (for SERIF).
GPIO[2]/SASRXD 92 I/O H 2XC (Hysteresis In) GPIO[2] or SASRXD (for SERIF).
GPIO[3]/SASCLK 91 I/O H 2XC (Hysteresis In) GPIO[3] or SASCLK (for SERIF).
GPIO[4]/CPCIN 90 I/O H 2XC (Hysteresis In) GPIO[4] or Calling Party Control Input.
GPIO[5]/SSCLK2 89 I/O H 2XC (Hysteresis In) GPIO[5] or SSCLK2 (for SSIF2).
GPIO[6]/SSTXD2 87 I/O H 2XC (Hysteresis In) GPIO[6] or SSTXD2 (for SSIF2).
GPIO[7]/SSRXD2 86 I/O H 2XC (Hysteresis In) GPIO[7] or SSRXD2 (for SSIF2).
GPIO[8]/FWRn 85 I/O H 2XC (Hysteresis In) GPIO[8] or flash write enable signal for NAND-type flash
memory.
GPIO[9]/FRDn 84 I/O H 2XC (Hysteresis In) GPIO[9] or flash read enable signal for NAND-type flash
memory.
GPIO[10]/SSSTAT2 83 I/O H 2XC (Hysteresis In) GPIO[10] or SSSTAT2 (for SSIF2).
GPIO[11]/BE/ 82 I/O H 1XC (Hysteresis In) GPIO[11] or bus enable or serial port data input for
SERINP autobaud detection.
GPIO[12]/CS[2]n 80 I/O H 2XC (Hysteresis In) GPIO[12] or I/O chip select [2].
GPIO[13]/CS[3]n 79 I/O H 2XC (Hysteresis In) GPIO[13] or I/O chip select [3].
GPIO[14]/CS[4]n 78 I/O H 2XC (Hysteresis In) GPIO[14] or I/O chip select [4].
GPIO[15]/CS[5]n 77 I/O H 2XC (Hysteresis In) GPIO[15] or I/O chip select [5].
GPIO[16]/IRQ[8] 76 I/O H 1XC (Hysteresis In) GPIO[16] or external interrupt 8.
GPIO[17] 75 I/O H 1XC (Hysteresis In) GPIO[17].
GPIO[18]/IRQ[9]n 74 I/O H 1XC (Hysteresis In) GPIO[18] or external interrupt 9.
GPIO[19]/RDY/ 73 I/O H 1XC (Hysteresis In) GPIO[19] or ready signal or Serial port data output for
SEROUT autobaud detection.
GPIO[20]/ALTTONE 107 I/O H 1XC (Hysteresis In) GPIO[20] or ALTTONE.
Miscellaneous
SM[3:0]/GPO[7:4] [103:106] O
−
1XC Programmable: scan motor control pins or GPO pins.
PM[3:0]/GPO[3:0] [115:118] O
−
1XC Programmable: print motor control pins or GPO pins.
TONE 119 O
−
1XC Tone output signal.
Power, Reference Voltages, Ground
-Vref/CLREF 66 I -VR
−
Negative Reference Voltage for Video A/D or Reference Voltage for the
Clamp Circuit.
ADXG 68 I VXG
−
A/D Internal GND. (NOTE: This pin requires an external 0.22
µ
F decoupling
capacitor to ADGA.)
ADGA 69 VADG A/D Analog Ground
ADVA 70 VADV A/D Analog Power
ADGD 72 VADG A/D Digital Ground
+Vref 71 I +VR Positive Reference Voltage for Video A/D.
VIN 67 I VA
−
Analog Video A/D input.
THAD1 65 I TA
−
Analog Thermal A/D input.
Power and Ground
VSS(12) 7,21,28,45, Digital Ground
53,56,64,88,
95,108,132,
134
VDD(8) 14,32,41,48, Digital Power
81,102,123,
140
VBAT 63 Battery Power
VDRAM 114 DRAM Battery Power
FC200 (IC2) Terminal descriptions
Pin Name Pin No. I/O
Input Output
Pin Description
Type Type
5 – 4