List Of Cpu Assignments - NEC NMV 1700V Service Manual

8.8 List of CPU Pin Assignments
Port Pin No. Signal Name
~
P1.0 HDATA0
!
P1.1 HDATA1
"
P1.2 HDATA2
#
P1.3 HDATA3
$
P1.4
%
P1.5
&
P1.6
'
P1.9
~
P3.0
~
!
P3.1
"
P3.2
#
P3.3 PWR_SW
$
P3.4
%
P3.5
&
P3.6
'
P3.7 DDC_GND
~
~
~
!
~
"
P2.0
#
P2.1
$
P2.2
%
P2.3
&
P2.4
'
P2.5
!
P2.6
!
P2.7
!
~
!!
~
!"
~
!#
~
!$
P0.7 D7(USB_ON)
!%
P0.6 D6(MUTE)
!&
P0.5 D5(LVCC)
!'
P0.4 D4(LEDGRN)
"
P0.3 D3(LEDAMBER)
"
P0.2 D2(BKLT_EN)
"
P0.1 D1(LVDS ON)
"!
P0.0 D0(PANEL EN)
""
~
Page 8
Initial Setting
NC ~
~
~
~
~
HCLK ~
HFS ~
Bank ~
PWM ~
RST L
RXD H
NC ~
TXD H
IRQ ~
~
SDA H
SCL ~
P3.6 H
L
XTAL2 ~
XTAL ~
GND ~
NC ~
A8 ~
A9 ~
A10 ~
A11 ~
A12 ~
A13 ~
A14 ~
A15 ~
PSEN# H
ALE ~
NC ~
EA# H
H
H
L
H
L
~
H
H
VCC ~
Function
~
gm5020 4bit interface data
gm5020 4bit interface data
gm5020 4bit interface data
gm5020 4bit interface data
gm5020 4bit interface Clock
gm5020 data enable
~
Pulse width modulation
Reset CPU
Receive data
~
Transmit data
gm5020 interrupt signal
ON/OFF monitor power
IIC Bus Data
IIC Bus Data
External Memory Write Enable
Detect Dsub cable plug-in
Crystal signal out
Crystal signal in
~
~
High-order address byte
High-order address byte
High-order address byte
High-order address byte
High-order address byte
High-order address byte
High-order address byte
High-order address byte
Program store enable
Address latch enable
~
External Access Enable
USB HUB power Enable (option)
Audio MUTE Enable
Audio suspend Enable
LED Green ON
LED AMBER ON
Inverter Back light Enable
LVDS IC Enable
Panel power Enable
VCC
NMV 1700V
Remark
Active H
Active L
Circuit Description