Nokia 9000i Service Manual page 35

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