µPD31172
PIN IDENTIFICATION
ACK#:
Acknowledge
MRAS (0:1)#:
OCI (1:2):
PE:
DRAM Row Address Strobe
AD (0:24):
ARBCLKSEL:
AUTOFEED#:
BUSAK (0:1)#:
BUSCLK:
BUSRQ (0:1)#:
BUSY:
Address Bus
Over Current Interrupt
Paper End
Arbitration Clock Select
Autofeed
PPON (1:2):
PS2CLK:
PS2DATA:
PS2INT:
RD#:
Port Power ON
PS2 Clock
Bus Acknowledge
System Bus Clock
Bus Request
PS2 Data
PS2 Interrupt
Busy
Read
CD (0:7):
CKE:
Centronics Data
Clock Enable
Clock Out of 48 MHz
Clear to Send
Data Bus
RESET:
RI#:
Reset
Ring Indicator
CLKOUT48M:
CTS#:
ROMCS (2:3)#:
RTS#:
ROM Chip Select
Request to Send
Receive Data
DATA (0:31):
DCD#:
RXD:
Data Carrier Detect
Direction of 1284
USB D−
SCAS#:
Column Address Strobe for
SDRAM
DIR1284:
DN (1:2):
DP (1:2):
DSR#:
SCLK:
SDRAM Clock
Select
USB D+
SELECT:
SELECTIN#:
SMI#:
Data Set Ready
Data Terminal Ready
Error
Select in
DTR#:
USB System Interrupt
Row Address Strobe for
SDRAM
ERROR#:
EXCS (0:5)#:
GND:
SRAS#:
External CS
Ground
STROBE#:
TXD:
Strobe
GPIO (0:23):
HOLDAK#:
HOLDRQ#:
IEN:
General Purpose I/O
Hold Acknowledge
Hold Request
USB Input Enable
Initialize
Transmit Data
Upper Column Address Strobe
Lower Byte of Upper Column
Address Strobe
USB Interrupt
UCAS#:
ULCAS#:
INIT#
USBINT#:
USBRST#:
UUCAS#:
INTRP:
Interrupt
USB Reset
IOCHRDY:
IOCS16#:
IOR#:
I/O Channel Ready
IO Chip Select 16
I/O Read
Upper Byte of Upper Column
Address Strobe
Power Supply Voltage
Wake Up Interrupt
Write
VDD:
IOW#:
I/O Write
WAKE:
WR#:
IRQ:
I/O Request
LCAS#:
Lower Column Address Strobe
LCD Back Light
LCD Chip Select
LCD Ready
XIN48M:
XOUT48M:
Clock In of 48 MHz
Clock Out of 48 MHz
LCDBAK:
LCDCS#:
LCDRDY:
Remark # indicates active low.
5
Data Sheet U14388EJ2V0DS00
NEC [ NEC ]
