Cinterion
®
Java Terminals Hardware Interface Overview
3.5 USB Interface
39
EHSxT_BGS5T_HIO_v03
2016-05-26
Confidential / Released
Page 24 of 50
In addition, the modem control signals DTR0, DSR0, DCD0 and RING0 are available. The mo-
dem control signal RING0 (Ring Indication) can be used to indicate, to the cellular device ap-
plication, that a call or Unsolicited Result Code (URC) is received. There are different modes
of operation, which can be set with AT commands.
Note:
The DTR0 signal will only be polled once per second from the internal firmware of Java
Terminals.
3.5
USB Interface
The USB interface is not available for EHS6T LAN. The other Java Terminals support a USB
2.0 High Speed (480Mbit/s) device interface that is Full Speed (12Mbit/s) compliant.
The USB interface can be used as command and data interface and for downloading Java
module firmware. It is only available as a slave device and not able to act as a USB host.
3.6
GPIO Interface
The GPIO connectors (8-pin and 12-pin) provide access to various module signals including a
number of configurable GPIOs. Note that not all of the pins are available for every Java Termi-
nal variant. The following figures show the available pins for the Java Terminal variants and the
below
lists the overall availablility of the pins.
Figure 5:
EHS5T RS485: GPIO connectors (8-pin and 12-pin)
1
2
3
4
1
2
3
4
5
6
GPIO6
GPIO7
GPIO8
n/a
VCCref
GND
TXD1
RXD1
A+
(RS-485)
B-
(RS-485)
5
6
7
8
7
8
9
10
11
12
n/a
n/a
GPIO22 GPIO23
+5Vout
DSR0/
ADC1_IN
I2CDAT
I2CCLK
GPIO20
GPIO21
EHS5T
n/a: not applicable
RS485:
