UX-108U/178U/188U
FO-375U
XFC3 (IC3) Terminal descriptions
Operator Panel Interface
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]/IRQ[5]n
75
I/O
H
1XC
(Hysteresis In) GPIO[17] or external interrupt 5.
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.
THADI
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
Pin Name
Pin No.
I/O
Input
Output
Pin Description
Type
Type
5 – 4
Summary of Contents for FO-375
Page 61: ...6 7 UX 108U 178U 188U FO 375U Control PWB parts layout Top side ...
Page 62: ...6 8 UX 108U 178U 188U FO 375U Control PWB parts layout Bottom side ...
Page 64: ...6 10 UX 108U 178U 188U FO 375U TEL LIU PWB parts layout ...
Page 66: ...6 12 UX 108U 178U 188U FO 375U Power supply PWB parts layout ...
