FALCOM C2D-SI
VERSION 1.07
This document is a property of FALCOM GmbH and may not be copied or circulated without permission
Page 15
PIN
GPS receiver
DESCRIPTION
LEVEL
47
GROUND
-
-
48
SDO2
Serial 2 Data Output
CMOS 3,3 V output
49
SDO1
Serial 1 Data Output
CMOS 3,3 V output
50
SDI1
Serial 1 Data Input
CMOS 3,3 V input
51
GPIO6
Reserved
CMOS 3,3 V input/output
52
GROUND
-
-
53
GPIO5
Reserved
CMOS 3,3 V inp./out.
54
GPIO A
Reserved
CMOS 3,3 V inp./out.
55
M-RST
Master Reset Input
active low
56
GPIO7
Reserved
CMOS 3,3 V inp./out.
57
VBATT_RTC
Battery Backup Input
3 V DC
58
3,3 V DC
Primary DC Power
3,3 V DC
59
Reserved
Reserved for Preamplifier
Power.(see page 27)
(3,3 V DC - 6 V DC)
60
3,3V DC
Primary DC Power
3,3 V DC
Table 8:
Pin configuration AMP 177984-2, GPS receiver
3.1.1
Determining the External Equipment Type
Before you connect the C2D-SI module (DCE unit) to external equipment,
you need to determine if the external hardware serial ports are configured as
DTE or DCE.
The terms DTE (Data Terminal Equipment) and DCE (Data
Communications Equipment) are typically used to describe serial ports on
devices. Computers (PCs) generally use DTE connectors and
communication devices such as modems and DSU/CSU devices generally
use DCE connectors. As a general rule, DTE ports connect to DCE ports via
straight through pinned cables. In other words, a DTE port never connects
directly to another DTE port. Similarly, a DCE port never connects directly
to another DCE port. The signalling definitions were written from the
perspective of the DTE device; therefore, a Receive Data signal becomes an
input to DTE but an output from DCE.
The C2D-SI is designed for use as a DCE unit. Based on the aforementioned
conventions for DCE-DTE connections it communicates with the customer
application (DTE) using the following signals:
