µPD31172
(5) PS/2 Interface Signals
Signal Name
PS2CLK
I/O
I/O
I/O
Function
This is the PS/2 clock signal.
This is the PS/2 data signal.
PS2DATA
(6) General-Purpose Port Signals
Signal Name
GPIO (0:23)
I/O
I/O
Function
Function
These are general-purpose I/O signals.
(7) General-Purpose Chip Select Signals
Signal Name
EXCS (0:5)#
I/O
Output
These are general-purpose chip select signals.
(8) LCD Interface Signals
Signal Name
LCDBAK
I/O
Function
Output
These are signals for controlling the LCD backlighting.
(9) Clock Signals
Signal Name
XIN48M
I/O
Function
Input
This is the 48 MHz oscillator input pin. Connect to one side of a crystal resonator.
XOUT48M
Output
Output
This is the 48 MHz oscillator output pin. Connect to the other side of the crystal resonator.
This is the 48 MHz clock output for the FIR of the VR4121.
CLKOUT48M
10
Data Sheet U14388EJ2V0DS00
NEC [ NEC ]
