Nokia 9000i - Page 35

After Sales
Technical Documentation
RAE/RAK–1N
Baseband
Page 2–9
Original, 08/96
27 / B2B
26 / B2B
UIF(3:0)
0V 0.7V Output/Input low
keyboard
row lines/
25 / B2B
24 / B2B
4.7V 4.85V 5.0V Output/Input high
display
data lines
28 / B2B UIF4
0V 0.7V Output/Input low
keyboard
row
read/write
4.7V 4.85V 5.0V Output/Input high
strobe for
LCD driv-
er
29 / B2B UIF5
0V 0.7V Output/Input low
keyboard
row
LCD driv
4.7V 4.85V 5.0V Output/Input high
LCD
driv
-
er register
select
30 / B2B UIF6
0V 0.7V Output/Input low
enable
strobe for
4.7V 4.85V 5.0V Output/Input high
LCD driv-
er
32 / B2B DCLK
3.6V 4.85V 5.0V State ”1”
DBUS
clock
0V 0.2V 0.7V State ”0”
clock
512 kHz
33 / B2B DSYNC
3.6V 4.85V 5.0V State ”1”
DBUS
sync
0V 0.2V 0.7V State ”0”
sync
8 kHz
34 / B2B RDA
3.6V 4.85V 5.0V State ”1”
DBUS re-
ceived
0V 0.2V 0.7V State ”0”
data to
CMT
35 / B2B TDA
3.6V 4.85V 5.0V State ”1”
1 mA load
DBUS
trans-
mitted
0V 0.2V 0.7V State ”0”
data from
CMT
36 / B2B M2BUS
0V 0.7V Input low level
Isink<5m
AB d
3.0V 5.0V Input high level
ABaud
rate 9600
0V 0.2V 0.35V Output low level
rate
9600
bits/s. (or
dbl)
3.6V 4.85V 5.0V Output high level
double)
38 / B2B LID
3.3V 4.9V Lid open
Cover
switch
0.0V 1.0V Lid closed
switch
status
2 / SIMFLEX BUZZER
0V 0.7V Output low,
buzzer on
Buzzer on
SIM flex
5.3V 7.2V 8.4V Output high,
buzzer off