User Guide

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VLED- J302 LED driver feedback ~0.5V From LCD to LED
driver
EXTWRX J416 Flash memory write ena-
ble
1.8V digital signal
VLED+ J303 LED driver output voltage ~7.5V V From LED driver to
LCD
EXTRDX J417 Flash memory read enable 1.8V digital signal
CSX J304 LCD Chip select Digital signal 1.8 V From UPP to LCD FLS2CSX J418 2ndFlash memory chip
select
1.8V digital signal Not used
SDA J305 LCD Serial Data Digital signal 1.8 V From UPP to LCD FLSCLK J419 Flash memory clock 35MHz digital clock signal
1.8V
In burst mode
RESX J306 LCD Reset Digital signal 1.8 V From UPP to LCD FLSCSX J420 Flash memory chip select 1.8V digital signal
SCLK J307 LCD Serial Clock Digital signal1.8 V
6.5 MHz
From UPP to LCD RFBUSCLK J501 HELGA control clock 13MHz digital clock signal
1.8V
From UPP to HELGA
GND J308 Ground (for module jig)
RFBUSEN1 J502 HELGA chip select 1.8V digital signal From UPP to HELGA
EARP J310 Earpiece line (positive) Audio signal (differ-
ential)
From UEM to Ear-
piece
RFBUSRST J503 HELGA Reset 1.8V digital signal From UPP to HELGA
EARN J311 Earpiece line (negative) Audio signal (differ-
ential)
From UEM to Ear-
piece
RFBUSDATA
(60)
J509 HELGA control serial
data
1.8V digital signal From UPP to HELGA
FMC-
trlDa (30)
J356 FM-radio serial data Digital signal 1.8 V From UPP to FM-
radio
GND J805 Ground (for module jig)
FMCtrl-
Clk
J357 FM-radio serial clock Digital signal 1.8 V From UPP to FM-
radio
FMWrEn J358 FM-radio write enable Digital signal 1.8 V From UPP to FM-radio
GND J308 Ground (for module jig)
FMClk J359 Reference clock for FM-
radio, 32 kHz
Digital signal 1.8 V From UPP to FM-radio
EARP J310 Earpiece line (positive) Audio signal (differ-
ential)
From UEM to Ear-
piece
SIMDATA J386 SIM data Digital signal 1.8 / 3V From / to UEM / SIM card
EARN J311 Earpiece line (negative) Audio signal (differ-
ential)
From UEM to Ear-
piece
SIMRST J387 SIM reset Digital signal 1.8 / 3V From UEM to SIM card
FMC-
trlDa (30)
J356 FM-radio serial data Digital signal 1.8 V From UPP to FM-
radio
SIMCLK J388 SIM clock 3.25MHz digital clock signal
1.8 / 3V
From UEM to SIM card
FMCtrl-
Clk
J357 FM-radio serial clock Digital signal 1.8 V From UPP to FM-
radio
VSIM J389 Power supply for SIM
card
1.8V or 3V Depends on the SIM card
Test Points