LG MG200 Service Manual page 23

3. H/W CIRCUIT DESCRIPTION
3.4.3 RF Interface (TPU, TSP Block)
Calypso uses this interface to control IOTA_CS(ABB Processor) and AERO(RF Processor) with
GSM Time Base.
Resource
TSPDO
TSPEN0
TSPEN1
TSPACT0
TSPACT1
TSPACT2
TSPACT3
TSPACT4
TSPACT5
3.4.4 SIM Interface
SIM interface scheme is shown in (Figure 8).
SIM_IO, SIM_CLK, SIM_RST ports are used to communicate DBB with ABB and the Charge Pump
in ABB enables 1.8V/3V SIM operation.
SIM Interface
SIM_CLK
SIM_RST
SIM_IO
SIM_PW CTRL
SIM_CD
Table 3-2. RF Interface Spec.
TSP (Time Serial Port)
Interconnection
ABB & RF main Chip
ABB
RF main Chip
TSP (Time Serial Port)
PDNB
PA_ON
PA_BAND
VC1
VC2
VC3
SIM card reference clock
SIM card async/sync reset
SIM card bidirectional data line
SIM card power activation
SIM card presence detection
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Description
Control Data
ABB Control Data Enable Signal
RF Control Data Enable Signal
RF main Chip Reset Signal
Power Amp ON Signal
Power Amp Band-selecton Signal
Ant. Switch control signal
Ant. Switch control signal
Ant. Switch control signal