No
. 96-1886-01E
Rev
.
1.1
GTECH Aircon Radio (Model GWT154)
PAGE
8
OF
72
Figure 2 - The interface pin numbering (top side view)
Pin
#
NAME
DESCRIPTION
1
VCC
3.3
Vdc
2
UTX
UART
data
out
from
module
3
URX
UART
data
in
to
module
4
NC
No
Connect.
Module
option
to
connect
to
port
P1_5
5
RESET_N
Module
Reset
6
NC
No
connect.
Module
option
to
connect
to
port
P2_0
7
P2_2/DC
CC2530
Debug
Clock.
For
programming
and
debugging
of
radio
module
CC2530
8
P2_1/DD
CC2530
Debug
Data.
For
programming
and
debugging
of
radio
module
CC2530
9
DTR_N
Data
Terminal
Ready
communication
line
10
GROUND
Ground
11
NC
No
Connect
12
CTS_N
Clear
to
Send
Flow
Control
13
SLEEP_N
Module
status
indicator
14
NC/P1_6/UTX1
No
Connect.
Module
option
to
connect
to
alternative
UART
TXD
15
NC/P1_7/URX1
No
Connect.
Module
option
to
connect
to
alternative
UART
RXD
16
RTS_N
Request
to
Send
Flow
Control
17
TX_EN
RS
‐
485
driver
enable
output
line.
Disables
bus
driver
during
hardware
reset
18
NC
No
Connect.
Module
option
to
connect
to
port
P1_4
19
NC
No
Connect.
Module
option
to
connect
to
port
P1_2
20
STATUS_LED
No
Connect.
Module
option
to
connect
to
port
P1_0
Table 1 - The interface pin assignments and definitions
