UX-258TH

FO-475TH

FC200 (IC2) Terminal descriptions

Pin Name

Pin No.

I/O

Input

 

Output

Pin Description

Type

 

Type

(Note: Active low signals have an "n" pin name ending.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU Control Interface

MIRQn

135

I

HU

 

Modem interrupt, active low. (Hysteresis In, Internal Pullup.)

SYSCLK

133

I

H

 

System clock. (Hysteresis In.)

TSTCLK

130

O

 

123XT

Test clock.

 

 

 

 

 

Bus Control Interface

A[23:0]

[1:6][8:13]

O

TU

 

123XT

Address bus (24-bit).

 

[15:20][22:27]

 

 

 

 

 

D[7:0]

[136:139]

I/O

TU

 

123XT

Data bus (8-bit).

 

[141:144]

 

 

 

 

 

RDn

128

O

 

123XT

Read strobe.

WRn

127

O

 

123XT

Write strobe.

ROMCSn

120

O

 

123XT

ROM chip select.

CS1n

122

O

 

123XT

I/O chip select.

CS0n

57

O

 

123XT

SRAM chip select. (Battery powered.)

MCSn

121

O

 

123XT

Modem chip select.

SYNC

126

O

 

123XT

Indicates CPU op code fetch cycle (active high).

REGDMA

124

O

 

123XT

Indicates REGSEL cycle and DMA cycle.

WAITn

125

O

 

123XT

Indicates current TSTCLK cycle is a wait state or a halt state.

RASn

113

O

 

123XT

DRAM row address select. (Battery powered.)

CAS[1:0]n

[111:112]

O

 

123XT

DRAM column address select. (Battery powered.)

DWRn

109

O

 

123XT

DRAM write. (Battery powered.)

 

 

 

 

Prime Power Reset Logic and Test

DEBUGn

129

I

HU

 

External non-maskable input (NMI).

RESETn

131

I/O

HU

 

2XO

XFC3 Reset.

TEST

58

I

C

 

Sets Test mode (Battery powered).

 

 

 

Battery Power Control and Reset Logic

XIN

59

I

OSC

 

Crystal oscillator input pin.

XOUT

60

O

 

OSC

Crystal oscillator output pin.

PWRDWNn

62

I

H

 

Used by external system to indicate loss of power to XFC3. (Results in NMI)

BATRSTn

61

I

H

 

Battery power reset input.

WRPROTn

110

O

 

1XC

(Battery powered.) Write protect during loss of VDD power.

 

 

 

 

 

Scanner Interface

START

101

O

 

2XS

Scanner shift gate control.

CLK1

100

O

 

2XS

Scanner clock.

CLK1n

99

O

 

2XS

Scanner clock-inverted.

CLK2

98

O

 

2XS

Scanner reset gate control (or clock for CIS scanner).

FCS1n/VIDCTL0

96

O

 

2XT

Flash memory chip select or Video Control signal.

FCS2n/VIDCTL1

97

O

 

2XT

Flash memory chip select or Video Control signal.

 

 

 

 

 

Printer Interface

PCLK

29

O

 

3XC

Thermal Print Head (TPH) clock, or external DMAACK.

PDAT

30

O

 

2XP

Serial printing data (to TPH).

PLAT

31

O

 

3XP

TPH data latch.

STRB[3:0]

[33:36]

O

 

1XP

Strobe signals for the TPH.

STRBPOL

37

I

C

 

Sets strobe polarity, active high/low.

 

 

 

 

 

Operator Panel Interface

OPO[0]/GPO[8]/

47

O

 

2XL

Keyboard/LED strobe [0] or GPO[8] or Scan Motor Power Control

SMPWRCTRL

 

 

 

 

 

 

OPO[1]/GPO[9]/

46

O

 

2XL

Keyboard/LED strobe [1] or GPO[9] or Print Motor Power Control

PMPWRCTRL

 

 

 

 

 

 

OPO[2]/GPO[10]/

44

O

 

2XCT

Keyboard/LED strobe [2] or GPO[10] or RINGER

RINGER

 

 

 

 

 

 

OPO[3]/GPO[11]

43

O

 

2XL

Keyboard/LED strobe [3] or GPO[11]

OPO[4]/GPO[12]/

42

O

 

2XL

Keyboard/LED strobe [4] or GPO[12] or SSTXD1 (for SSIF1)

SSTXD1

 

 

 

 

 

 

OPO[5]/GPO[13]

40

O

 

2XL

Keyboard/LED strobe [5] or GPO[13]

OPO[6]/GPO[14]

39

O

 

2XL

Keyboard/LED strobe [6] or GPO[14]

OPO[7]/GPO[15]

38

O

 

2XL

Keyboard/LED strobe [7] or GPO[15]

OPI[0]/GPIO[21]/

52

I/O

HU

 

2XC

(Pullup, Hysteresis In) Keyboard return [0] or GPIO[21] or SSRXD1

SSRXD1

 

 

 

 

 

(for SSIF1)

OPI[1]/GPIO[22]/

51

I/O

HU

 

2XC

(Pullup, Hysteresis In) Keyboard return [1] or GPIO[22] or SSSTAT1

SSSTAT1

 

 

 

 

 

(for SSIF1)

OPI[2]/GPIO[23]/

50

I/O

HU

 

2XC

(Pullup, Hysteresis In) Keyboard return [2] or GPIO[23] or SSCLK1

SSCLK1

 

 

 

 

 

(for SSIF1)

 

 

 

 

 

 

 

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Image 45
Sharp FO-475TH, UX-258TH manual FC200 IC2 Terminal descriptions