- 78 -
LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
3. Technical Brief
3.17.3 ASM (FL1007, D5017)
This equipment uses a single antenna to support all handset operating modes, with an antenna switch
module select the operating frequency and band. UMTS operation requires simultaneous reception and
transmission, so the UMTS Rx/Tx connection is routed to a duplexer that separates receive and transmit
signals. The active connection is MSM-selected by three control lines (GPIO[72], GPIO[73], GPIO[74] and
GPIO[75]). These GPIOs are programmed to be ANT_SEL3, ANT_SEL2, ANT_SEL1 and ANT_SEL0
respectively.
Содержание GD88O
Страница 1: ...Service Manual Model GD880 Internal Use Only Service Manual GD880 Date March 2010 Issue 1 0 ...
Страница 183: ... 184 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 199: ... 200 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 217: ... 218 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...