Emiu - Nokia 9000i Service Manual

After Sales
Technical Documentation

EMIU

This module contains only passive components to suppress EMI
generated voltages on external signal lines.
Note 1. B2B = Board to board connector between PDA and CMT modules
Table 14. External Signals and Connections, Inputs
Signal Name
BACKLIGHTI Backlights on/off (control)
KEYDI(2:0) Keymatrix drive lines
KEYSI(1:0) Keymatrix sense lines
LCDD(3:0) PDA LCD Data
DISPONI PDA LCD Display on control signal
FPI PDA LCD Frame Pulse
PCLKI PDA LCD Pixel Clock
LPI PDA LCD Line Pulse
PHFMICNI Negative Hands Free MIC input
PHFMICPI Positive Hands Free MIC input
COL(3:0)I Lines for keypad write
UIF(3:0)I Lines for keypad read and LCD–controller data
UIF4I Line for keypad read and LCD–controller read/write strobe
UIF5I Line for keypad read and LCD–controller data/insruction register
selection
UIF6I LCD–controller enable srobe
MBUSI Serial bidirectional data and control between the handphone and
accesseries
EXTMICI External audio input from accessories or handsfree microphone.
Multiplexed with junction box connection indication. 16.8k pull
down in CMT
EXTEARI External audio output to accessories or handsfree speaker.
100kW pull–down in CMT to turn on the junction box.
Note 1. LCMCON = LCD module connector on PDA module
Original, 08/96
Signal description
RAE/RAK–1N
PDA Hardware
From (1)
B2B / Back-
light
PROCU /
KEYD(2:0)
PROCU /
KEYS(1:0)
PROCU /
LCDD(3:0)
PROCU /
DISPON
PROCU /
FP
PROCU /
PCLK
PROCU /
LP
B2B /
PHFMICN
B2B /
PHFMICP
B2B /
COL(3:0)
B2B /
UIF(3:0)
B2B / UIF4
B2B / UIF5
B2B / UIF6
B2B / MBUS
B2B / EX-
TMIC
B2B / EX-
TEAR
Page 6 – 23