3. TECHNICAL BRIEF
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3. TECHNICAL BRIEF
3.1 Transceiver (SI4205-BM, U500)
The RF parts consist of a transmitter part, a receiver part, a frequency synthesizer part, a voltagesup-
ply part, and a VCTCXO part.
The Aero I transceiver is the integrated RF front end for multi-band GSM/GPRS digital cellularhand-
sets and wireless data modems. The integrated solution eliminates the IF SAW filter, externallow
noise amplifier (LNAs) for three bands, transmit and RF voltage controlled oscillator(VCOmodules,
and other discrete components found in conventional designs.
Figure 3-1 RECEIVER FUNCTIONAL BLOCK DIAGRAM
H
C
TI
W
S
A
N
N
E
T
N
A
TCXO
Содержание B2050
Страница 7: ... 6 2 PERFORMANCE 2 PERFORMANCE 2 1 H W Features ...
Страница 8: ... 7 2 PERFORMANCE ...
Страница 9: ... 8 2 PERFORMANCE 2 2 Technical Specification ...
Страница 10: ... 9 2 PERFORMANCE ...
Страница 11: ... 10 2 PERFORMANCE ...
Страница 12: ... 11 2 PERFORMANCE ...
Страница 13: ... 12 2 PERFORMANCE ...
Страница 53: ... 52 4 2 TX Trouble TEST POINT 13Mhz OSCILLATOR Mobile SW FEM TRANCEIVER LDO PAM 4 TROUBLE SHOOTING ...
Страница 57: ... 56 3 Checking Ant SW Mobile SW 4 TROUBLE SHOOTING ...
Страница 67: ... 66 TEST POINT 4 6 LCD Trouble 4 TROUBLE SHOOTING ...
Страница 70: ... 69 4 TROUBLE SHOOTING TEST POINT 4 7 Speaker Trouble ...
Страница 77: ... 76 4 TROUBLE SHOOTING 4 10 KEY backlight Trouble TEST POINT ...
Страница 91: ... 90 5 DOWNLOAD AND CALIBRATION 6 Press Start and Pover on the phone using JIG remote Power on Switch 1 ...
Страница 92: ...5 DOWNLOAD AND CALIBRATION 91 5 2 Calibration ...
Страница 93: ... 92 5 DOWNLOAD AND CALIBRATION ...
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Страница 104: ... 103 8 PCB LAYOUT Figure 8 1 B2050 TOP SIDE PCB LAYOUT ...
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