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

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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