– 5–7 –
3.
VC1 (Pin2)
VC2 (Pin4)
VC3 (Pin8)
ACTION
0
1
0
EGSM TX
0 0 1 DCS
0
0
0
EGSM/DCS RX
Table 5.3
5.2.3. Functional Description
Tx-VCO
UHF-VCO
(LO)
PA-
Controller
Dual-band
PA
TxGSM
TxDCS
ÖÖ .
Ö
VCTCXO
13MHz
Fref
LE
CLK
Data
Txin
Txip
Txqn
Txqp
AFC
APC
PA module
RF3140
Transceiver
CX74017
Dual-band
TR switch
TxGSM
TxDCS
VC1 VC2 VC3
Rxin
Rxip
Rxqn
Rxqp
PCO1
PCO2
TXENA
RXENA
SXENA
U100
U106
U104
U111
ANT
G60 is model using DCR (Direct Conversion Receiver) in it that eliminates the need for IF components (IF SAW), the
transceiver also integrates TXVCO and LO, and PA module integrate PAC.
1.
PCO1 PCO2
Select
0 0
No
action
0 0
EGSM
1 0
DCS
2.
TXENA RXENA SXENA ACTION
1 0 1 TX
0 1 1 RX
X X 0 RF off
Figure 5.3. : Functional Description
Содержание EBG60 - CELL PHONE
Страница 19: ... 5 2 5 1 2 RF Function Block Figure 5 1 RF Function Block Diagram ...
Страница 35: ... 5 18 5 15 POWER SUPPLIES 5 15 1 Introduction ...
Страница 77: ... 8 19 Modify Cable lose ...
Страница 89: ... 11 1 11 LAYOUT DIAGRAMS 11 1 Main PCB ...
Страница 90: ... 11 2 11 2 Key PCB ...