HUAWEI MU509-65 HSDPA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 01 (2016-04-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
35
Pin
No.
Pin Name
Pad
Type
Description
Parameter Min. (V)
Typ. (V) Max. (V)
77
UART_RING
O
UART ring indicator
V
OH
2.15
-
2.6
V
OL
0
-
0.45
74
UART_RTS
O
UART ready for
receive
V
OH
2.15
-
2.6
V
OL
0
-
0.45
79
UART_DTR
I
UART data terminal
ready
V
IH
1.69
-
2.9
V
IL
–0.3
-
0.91
80
UART_CTS
I
UART clear to send
V
IH
1.69
-
2.9
V
IL
–0.3
-
0.91
75
UART_DCD
O
UART data carrier
detect
V
OH
2.15
-
2.6
V
OL
0
-
0.45
73
UART_DSR
O
UART data set
ready
V
OH
2.15
-
2.6
V
OL
0
-
0.45
Figure 3-18 shows the connection of the UART interface in the MU509-65 module
(DCE) with the host (DTE).
Figure 3-18
Connection of the UART interface in the MU509-65 module (DCE) with the
host (DTE)
UART_TX
UART_RX
UART_CTS
UART_RTS
UART_DTR
UART_DSR
UART_DCD
UART_RING
TXD
RXD
RTS
CTS
DTR
DSR
DCD
RING
Module
(DCE)
Application
(DTE)