
xE922-3GR Hardware User Guide
1VV0301272
Rev.0.8 2017-01-05
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved.
Page 64 of 112
Guidelines for off-module sub trajects:
parameter
Carrier board
Addon board
Transmission line segment L3
L4
Length [mm]
82.5 (MS/SL)
Max. 203.2
–
(L1+L2+L3)
Actual xE922-3GR module signal trace (L1+L2) implementation:
signal name
module trace length [mm]
Number of microvias on
the module
LVDS_TCLK1N
10.47
2
LVDS_TCLK1P
10.46
2
LVDS_TA1N
9.12
2
LVDS_TA1P
9.31
2
LVDS_TB1N
8.25
2
LVDS_TB1P
8.51
2
LVDS_TC1N
8.16
2
LVDS_TC1P
7.99
2
LVDS_TD1N
12.64
2
LVDS_TD1P
12.46
2
10.3.
Backlight control
PAD
Signal
I/O
descriptions
Type
LCD Backlight
AS15
CABC
AI
Content Adaptive Backlight Control
Analog
AS17
LEDFB_DP
AI
Backlight feedback Positive
Analog
AU17
LEDFB_DN
AI
Backlight feedback Negative
Analog
AP13
LEDDRV
AO
Backlight Drive
Analog
The LED current generator feature can generate supply current for display or keypad backlight LED’s