3. TECHNICAL BRIEF
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3.6.1 Baseband Transmit Section
1. The AD6537B Baseband Transmit Section is designed to support GMSK for both single-slot and
multi-slot application.
2. The transmit channel consists of a digital GMSK modulator, a matched pair of 10-bit DACs and a
matched pair of reconstruction filter.
3.6.2 Baseband Transmit Section
1. This section consists of two identical ADC channels that process baseband in-phase(I) and
quadrature(Q) input signals.
Active
CT Filter
GMSK
Modulator
PGA
Control
Serial
Port
Baseband
Serial
Port
Tx
DAC
CSFS
CSDI
CSDO
BSIFS
BSDI
SC
Filter
Active
CT Filter
PGA
SC
Filter
Tx
DAC
Active
CT Filter
SC
Filter
Ramp
DAC
Ramp
RAM
PGA
AD6537B
IP
IN
QP
QN
PA
Figure 3-12. AD6537B BASEBAND TRANSMIT SECTION
Digital
Filter
Baseband
Serial
Port
Rx
ADC
BSOFS
BSDO
SC
Filter
Digital
Filter
Rx
ADC
SC
Filter
AD6537B
IP
IN
QP
QN
Othello™
Figure 3-13. AD6537B BASEBAND RECEIVER SECTION
Summary of Contents for S5000
Page 1: ...Date November 2005 Issue 1 0 Service Manual S5000 Service Manual Model S5000 ...
Page 3: ... 4 ...
Page 82: ...4 TROUBLE SHOOTING 83 4 12 KEY backlight Trouble Test Points Figure 4 21 ...
Page 101: ...5 DOWNLOAD AND CALIBRATION 102 9 Phone test Finish is shown in below screen ...
Page 103: ... 104 ...
Page 111: ... 112 8 PCB LAYOUT ...
Page 112: ... 113 8 PCB LAYOUT ...
Page 113: ... 114 ...
Page 121: ...10 STAND ALONE TEST 122 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 125: ... 126 ...
Page 126: ... 127 ...
Page 128: ... 129 12 EXPLODED VIEW REPLACEMENT PART LIST ...
Page 129: ... 130 ...