User's Manual
view)
Signal
name
(DTE
point
of
view)
Signal
use
(DTE
point
of
view)
DTE_DSR
Signal
UART
interface
is
ON
DTE_CTS HILONC-3GPS is ready to receive AT
DTE_RTS
Wakes
up
the
module
when
Ksleep=1
is
DTE_RI
Signal
incoming
calls
(voice
and
data),
– –
HILONC- 3GPS APPLICATION
NOTE
3.5.
UART
The
HILONC-3GPS
has
a
UART
port
that
can
be
used
in
low-speed,
full-speed,
and
high-speed
modes.
The
UART
communicates
with
serial
data
ports
conforming
to
the
RS-232
interface
protocol.
With
a
properly
written
and
user-defined
download
program,
the
UART
port
can
be
used
for
testing
and
debugging.
Provision
of
external
access
to
the
V24
interface
for
easy
upgrade
of
software
is
recommended.
Baud
rate
up
to
4Mbps.
Unused
signals
remain
disconnected.
Signal name (DCE point of
UART_DTR
UART_DCD
UART_RX
UART_RTS
UART_TX
UART_CTS
UART_RI
UART_DSR
DTE_DCD
Signal
data
connection
in
progress
DTE_TX
Transmit
data
commands
DTE_RX
Receive
data
used
SMS,
etc.
Prevents
the
HILONC-3GPS
from
entering
sleep
mode
DTE_DTR
Switches
between
data
mode
and
command
mode
Wakes
the
module
up.
3.5.1.
Complete
V24
Connection
of
HILONC-3GPS
to
host
The
40
pins
of
the
HILONC-3GPS
module
provide
a
V24
interface
with
the
following
signals:
RTS/CTS
,
RXD/TXD
,
DSR
,
DTR
,
DCD
,
RI
.
Use
of
this
complete
V24
connection
is
required
whenever
your
application
exchanges
data.
HiLoNC-3GPS
pin60
pin17
pin59
pin16
pin15
pin14
pin58
pin61
UART1_TX
UART1_RX
UART1_RTS
UART1_CTS
UART1_DSR
UART1_DTR
UART1_DCD
UART1_RI
DTE_RX
DTE_TX
DTE_CTS
DTE_RTS
DTE_DTR
DTE_DSR
DTE_DCD
DTE_RI
DTE
device
GND
is
not
represented.
:
Complete
V24
connection
of
HILONC-3GPS
to
host
This
configuration
allows
the
use
of
flow
control
RTS
&
CTS
to
avoid
overflow
error
during
data
transfer.
In
addition,
UART_RTS
is
used
to
inform
DTE
whether
the
HILONC-3GPS
is
ready
to
receive
an
AT
command
after
power
up
sequence
or
wake
up
from
the
sleep
mode.
Note
d’étude
/
Technical
document
:
01/08/20111
-
Page
16
/
41