Model
MASS 2
Version
V_1.0
Prepared by
H/W
Date
22/01/2008
Subject Technical
Manual Page
58/59
<Single Slot RX Event with Timing Requirement>
<BSI Interface>
In order to simply the serial control mechanism, and achieve best usage of BSI resources. Each burst received, there
are three generic timing defined (SR1/SR2/SR3) to send 3-wire control commands to transceiver. Usually 1’st BSI
event(SR1) is used to warm up the synthesizer and set its N-Counter to lock the operation frequency. The 2’nd
BSI(SR2) is used to set the receiving amplifier gain, received mode and operation band of transceiver. The 3’rd
BSI(SR3) is used to command transceiver entering idle mode. All bands(GSM/DCS/PCS) share the same timing.
<BPI Interface>
In order to simply the parallel control mechanism, and achieve best usage of BPI resources. Each burst received,
there are also three generic timing defined(PR1/PR2/PR3) to send HW Control signals to RF Module. In other
words, There are only three timing events to trigger HW control signals changing its state. Usually 1’st BPS
event(PR1) is used to activate the RF Component. The 2’nd BPI(PR2) is used to control antenna switch depend on
its band. The 2’rd BPI(PR3) is used to force RF Module entering idle mode. All bands(GSM/DCS/PCS) share the
same timing but could have different HW control signals.
III. LMSP54HA-348TEMP
(Antenna Switch Module for Tri- Band with SAW Filter)
LMSP54HA-348TEMP is an Antenna Switch Module for GSM850/DCS1800/PCS1900 of Murata with Three
SAW Modules.
Control Pins (VC1, VC2, VC3) are connected to LB_TX, HB_TX,PCB (signals from baseband processor). The
Control Pins Operating range is 2.4V 2.8V.
Содержание MASS2
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