Omega; Introduction; Uplink I And Q - Panasonic EB-GD93 Technical Manual

8 OMEGA

8.1. Introduction

Omega contains the interface circuits to the Audio, RF and auxiliary functions for the baseband circuit.

8.2. Uplink I and Q

Omega performs GMSK modulation on Data samples received from HERCULES at 270 bits per second.
Timing interface
Din
Burst
Register
270 kHz
Differential
Encoder
Power
Register
10210-1
MCUK001001G8
Technical Guide
U602 OMEGA
BURST DIFF
RIF STORE ENCODE
FILTER SIGMA-DELTA
FILTER SIGMA-DELTA
TSP
INTERNAL REGISTERS
SPI
BPF SIGMA-DELTA
LEAD
Megamodule
BPF SIGMA-DELTA
SIM REG. &
SHIFTER
CLOCK
CLKM
GEN.
D28V
BATTERY
REGURATOR
D18V
CHARGER I/F
PWR CONT.
nINT1
FET SW.
nINT2
Figure 8.1: Omega Block Diagram
Burst Timing
Control
Gaussian
Integrator
Filter
Ramp-up
Shaper
To Power
control DAC
Figure 8.2: Functional structure of the baseband uplink path
ULI
10-Bit LPF
GMSK I DAC
ULQ
10-Bit LPF
MOD
Q DAC
DLI
ANTIALIASING
FILTER
DLQ
ANTIALIASING
FILTER
PARAMP
APC
(10-Bit D/A)
AFC
AFC
(13-Bit D/A)
LPF
PATH CTRL
SIM CARD
TEST JTAG
MONITORING
10-BIT A/D
VBAT BAT ID
Offset
Register
Cosine
10 bit
Table
DAC
phase(i) 16 *270 kHz
Sine 10 bit
Table
DAC
Offset
Register
Section 8
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10209-1
ULIP
Low Pass
Filter
ULIN
ULQP
Low Pass
Filter
ULQN
Revision 0
OMEGA
Issue 1