Specifications

Interface ASIC (VHIKZ3H008302) I/O pin arrangement list (PCL Model)
PIN
No.
Pin name Signal name IN/OUT Destination Function
1V
DD
3.3V IN Power source
2 CPUD13 LDT13 IN/OUT 74LVC16245 Data bus
3 CPUD14 LDT14 IN/OUT 74LVC16245 Data bus
4 CPUD15 LDT15 IN/OUT 74LVC16245 Data bus
5 MODECLK MODECLK OUT 74LS244 Boot mode clock
6 MODEIN MODEIN OUT CPU CPU boot mode setup serial data
output
7 CPUINTR_1 PARINTR_ OUT CPU Print request interruption output
8 DAMMY 1284-EN_ , USB-
EN_ , USB-ON
OUT USS-725, 74LVX244, I/F_CN IEEE1284/USB selection enable
signal
9 EREADY_1 PREADY_ OUT 74LVC244 Print ready signal
10 SRDY_1 SRDY_ OUT 74LVC244 PCL side reception ready signal
11 GND GND IN GND
12 GND GND IN GND
13 AD2 RAD2 IN/OUT 74LVC16244, 8M Flash, 16M Flash Address bus
14 AD3 RAD3 IN/OUT 74LVC16244, 8M Flash, 16M Flash Address bus
15 AD4 RAD4 IN/OUT 74LVC16244, 8M Flash, 16M Flash Address bus
16 AD5 RAD5 IN/OUT 74LVC16244, 8M Flash, 16M Flash Address bus
17 READY_1 EREADY_ IN 74LS244 MCU side ready signal
18 CRDY_1 CRDY_ IN 74LS244 MCU side reception ready signal
19 PSON_1 IN NC (3.3V pull up)
20 NETON_1 IN NC (3.3V pull up)
21 EXON_1 USB-IN IN I/F_CN USB input detection signal
22 SCK SCK IN 24C16 EEPROM serial clock
23 SDAOUT SDAOUT IN 24C16 EEPROM serial data output
24 SDAIN SDAIN IN 24C16 EEPROM serial data input
25 BSEL4 IN Process speed setup JP (3.3V pull
up)
26 BSEL3 IN Process speed setup JP (GND pull
down)
27 BSEL2 IN Process speed setup JP (GND pull
down)
28 BSEL1 IN Process speed setup JP (GND pull
down)
29 BSEL0 IN Process speed setup JP (3.3V pull
up)
30 SLCT SLCT OUT 74LCX244, USS-725 Printer selection state
31 FAULT_1 FAULT_ OUT 74LCX244, USS-725 Printer error
32 PE PE OUT 74LCX244, USS-725 Paper end
33 BUSY BUSY OUT 74LCX244, USS-725 Printer busy state
34 ACK_1 ACK_ OUT 74LCX244, USS-725 ACK status
35 STB_1 STB_ IN 74LCX244 STROBE control signal
36 AUTOFD_1 AUTOFD_ IN 74LCX244 Automatic new-line control signal
37 SLCTIN_1 SLCTIN_ IN 74LCX244 Printer selection
38 INIT_1 INIT_ IN 74LCX244 Printer initializing
39 PARAD7 PARAD7 IN 74LCX245, USS-725 Parallel I/F data bus
40 V
DD
3.3V IN Power source
41 V
DD
3.3V IN Power source
42 PARAD6 PARAD6 IN 74LCX245, USS-725 Parallel I/F data bus
DM-1505
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