Specifications

Table Of Contents
Cinterion
®
ALAS5V Hardware Interface Description
2.1 Application Interface
67
ALAS5V_HID_v00.030a 2019-03-20
Confidential / Preliminary
Page 24 of 124
Serial
Modem
Interface
ASC1
RXD1 O V
OL
max = 0.45V at I = 2mA
V
OL
nom = 0.1V at I = 100µA
V
OH
min = 1.30V at I = -2mA
V
OH
nom = 1.65V at I = -100µA
V
OH
max = 1.84V
Test points recommended
for RXD1, TXD1, CTS1,
RTS1.
If unused keep line open.
CTS1 O
TXD1 I V
IL
max = 0.50V
V
IH
min = 1.30V
V
IH
max = 2.0V
I
IHPD
= 27.5µA…97.5µA
I
ILPU
= -27.5µA…-97.5µA
I
High-Z max
= ±1µA
RTS1 I
Serial
Debug
Interface
ASC2
(Gemalto
internal)
RXD2 O V
OL
max = 0.45V at I = 2mA
V
OL
nom = 0.1V at I = 100µA
V
OH
min = 1.30V at I = -2mA
V
OH
nom = 1.65V at I = -100µA
V
OH
max = 1.84V
No external pull-up / pull-
down resistors allowed.
Test points required.
If unused keep line open.
TXD2 I V
IL
max = 0.50V
V
IH
min = 1.30V
V
IH
max = 2.0V
I
IHPD
= 27.5µA…97.5µA
I
ILPU
= -27.5µA…-97.5µA
I
High-Z max
= ±1µA
Power indi-
cator
PWR_IND O V
IH
max = 5.5V
V
OL
max = 0.45V at Imax = 2mA
PWR_IND (Power Indicator)
notifies the module’s on/off
state.
PWR_IND is an open collec-
tor that needs to be con-
nected to an external pull-up
resistor. Low state of the
open collector indicates that
the module is on. Vice versa,
high level notifies the Power
Down mode.
Therefore, the signal may be
used to enable external vol-
tage regulators that supply
an external logic for commu-
nication with the module,
e.g. level converters.
Test point recommended.
Table 4: Signal description
Function Signal name IO Signal form and level Comment