Uif Mechanical Characteristics; Functional Description; Uif Circuit Description; Keypad Scanning And Display Driver Control - Nokia 9000i Service Manual

After Sales
Technical Documentation
Signal Name Connector
RF1 X035
RF2 X040

UIF Mechanical Characteristics

feature
Weight
Dimensions

Functional Description

UIF Circuit Description

The module is connected with 33 pin flex connector to the PDA Module,
24 pin soldered connection to the CMT LCD module and 12 pin connector
to the PDALCD.
The module includes following main blocks:

Keypad scanning and display driver control

COL(0–3) are used as column lines in keypad. UIF(0–5) are used as row
lines. They are also multiplexed with display driver control signals.
When a key is pressed the ASIC gets an interrupt from a row and the
MCU starts scanning. One column at a time is written to low and rows are
used to read which key it was. The power off detection is multiplexed with
one row; when all keys on the row seems to be pressed the ASIC knows
that power key is pressed. The power key is also connected to PSL+ to
switch the power on.
Row lines and UIF6 are used for display driver control. UIF(0–3) are used
as 4 bit parallel data bus for the driver. UIF4 is used as read/write strobe,
UIF5 to select data or instruction register and UIF6 as enable strobe.
Amendment 1 04/97
Table 6. RF Connectors
Signal description
RF Signal to/from CMT module
RF Clips connector to/from An-
tenna
Table 7. UIF Mechanical Characteristics
value
23g
165.0x50.8x4.0mm
– CMT keypad and PDA Soft keypad
– illumination
– CMT LCD Module interface
– PDA LCD connector
– Hinge flex connector
– Antenna impedance matching circuit
– Test pads for CMT LCD and LED testing
– Antenna connector and antenna clips
RAE/RAK–1N
Note
notes
Typical
Typical
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UIF