User's Manual

49 68P80801H45-1 1/20/2002
800/900/1500 MHz Base Radios EBTS System Manual - Vol 2
Base Radio Controller
SPI
BUS
PHASE
DETECTION/
FILTERING
HIGH
STABILITY
VCXO
48 MHZ
16.8MHZ
QUAD Channel Base
Radio Controller
Functional Block Diagram
Figure 13 800 and 900 MHz QUAD Channel Base Radio Controller Functional
Block Diagram (Sheet 1 of 2)
POWER
SUPPLY
EXCITER/
CONTROL
PA REF RX1 RX2 RX3 RX4 TX1 TX2 TX3 TX4
P0 OUT
LED
CONTROL
LINES
HOST
LATCH
12
FRONT PANEL LEDS
REMOTE STATION
3.3V
P0_OUT
SHUTDOWN
CIRCUITRY
SHUTDOWN
(TO POWER
SUPPLY)
SHUTDOWN CIRCUITRY
SYNTHESIZER
IC / CIRCUITRY
5MHZ_1PPS
BASE RADIO
INPUT
HIGH
STABILITY
VCXO
PHASE
DETECTION/
FILTERING/
CONTROL
STEARING
LINE
DISCONNECT/
CONNECT
CONTROL
G
A
T
I
N
G
SPI
BUS
16.8 MHZ
SYNTHESIZER
IC / CIRCUITRY
STEARING
LINE
STATION REFERENCE CIRCUITRY
TRANSMIT REFERENCE CIRCUITRY
5MHZ
1PPS