
24
Digital Circuitry
TB9100 Reciter Service Manual
© Tait Electronics Limited January 2006
Figure 3.1
Reciter Digital Circuitry Block Diagram
RSSI
Pr
ocess
Loopback
Cr
osspoint
Switch
FM
Demodulation
Rx
Audio
Pr
ocessor
DDC
ADC
Rx
Cr
osspoint
Switch
Interface
(serial
port)
CODECs
& Signal
Conditioning
Interface
(RISC/
DSP)
Tx
Cr
osspoint
Switch
DSP
Fr
equency
Contr
ol Loop
Section
Tx
Audio
Pr
ocessor
Signalling
Pr
ocessor
Audio & DC
Measur
ement
Noise
Mute
serial port
Interface
(RISC/
DSP)
RISC
serial port
CODECs
& Signal
Conditioning
serial port
CODECs
& Signal
Conditioning
serial port
Tx
VCO
Tx
Synthesiser
Tx
VCXO
RF
Fr
equency
Contr
ol Loop
Section
RF PCB
Digital PCB
Contr
ol P
anel PCB
Digital Signal
Paths
DSP
Digital IF
ASIF PCB
Speak
er
Microphone
Progr
amming P
ort
LEDs and Switches
RSSI
Balanced
Audio Output
Unbalanced
Audio Output
Balanced
Audio Input
Discrete I/O & SIO Bus
Unbalanced
Audio Input
VCO Modulation
VCXO Modulation
VCO Control F
eedback
FCL I
FCL Q
40MHz Clock
40MHz Clock
70.1MHz IF
from RF PCB
40MSPS
12.8MHz Clock
Summary of Contents for TB9100
Page 1: ...TB9100 base station Reciter Service Manual MBA 00017 01 Issue 1 January 2006...
Page 12: ...12 TB9100 Reciter Service Manual Tait Electronics Limited January 2006...
Page 32: ...32 Reference Switch TB9100 Reciter Service Manual Tait Electronics Limited January 2006...
Page 86: ...86 Network Circuitry TB9100 Reciter Service Manual Tait Electronics Limited January 2006...