Navman 12 Designer's Manual page 7

2. The Scorpio device, which contains an
integral microprocessor and all GPS specific
signal processing hardware.
In addition, memory and other supporting
components configure the receiver into a complete
navigation system. Figure 1-3 illustrates an
receiver front-end
RF
connector
LNA
pre-select
filter
post-select
filter
GPS antenna
MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.
CX74051
signal samples
clock signals
down
converter
A/D control
0
10.949 MHz
Xtal
regulated DC power
bat. backup to SRAM & RTC
Figure 1-2 Internal Jupiter architecture
pre-amplifier
(optional)
power
supply
Figure 1-3 Possible Jupiter/OEM architecture
architecture that might be used to integrate a
particular Jupiter receiver with an application
processor that drives peripheral devices such as a
display and keyboard. The interface between the
application's processor and the Jupiter receiver is
through the serial data interface.
CX11577
baseband processor
12 channel
GPS
correlator
SRAM
ROM*
*contains
software
ADD 12C
BUS BUS
EMI filtering
& power supply
DGPS
(optional)
Jupiter
GPS receiver
power/communications interface
OEM
application
processor
serial port 2
GDGPS data
(RTCMSC-104)
serial port 1
OEM host interface
1PPS, 10 kHz
timing reference
serial
EEPROM
RTC
0
32 kHz Xtal
+3.3 or 5.0 VDC input
+3.3 or 5.0 VDC bat. backup
display
keypad
7