ERA-GLONASS IVS connector
- pin assignment and form factor
Version 0.5, 5.02.2012
Introduction
This document describes the structure of signals that must be implemented in a
connector to connect the IVS ERA-GLONASS to the onboard vehicle network. For
each signal, given the signal name, a description of the signal and sign the
mandatory signal for implementation. Connector IVS can be installed by the
manufacturer of the vehicle on the assembly line to allow connection of IVS’s
installed in the configuration of additional hardware in the future. Connector IVS
contains signals that should be used (mandatory signal) or can be used (not
mandatory signals) IVS for communication with the automotive system. Since
simultaneously with the connection and can be installed cables to connect a
microphone, User Interface Module (UIM), provides the appropriate signals. The
physical connection interface UIM is not defined - reserved 4 signals. If necessary,
signals gpio3 ... gpio5 can be used to connect additional devices. The same signals
may also be used to connect USB. The composition of the realized signals and the
type of USB (USB host, USB device) determines the manufacturer of the vehicle.
1. Main connector
Pin Function Descriptions
Pin
No.
Mnemonic
direction
Description
(for IVS)
Mandat
ory
1
2
3
4
NC
NC
NC
Ground
Input
Ground
Uin+
Input
Power supply voltage 12V or 24V
uim_4
Input-Out
UIM – signal 4 (e.g., ground for status indicator)
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
uim_3
Input-Out
UIM – signal 3 (e.g., status indicator)
uim_2
Input-Out
UIM – signal 2 (e.g., the button №2)
uim_1
Input-Out
UIM – signal 1 (e.g., the button №1)
Ground_UIM
Out
Ground UIM
No
No
No
No
J1850-
Input-Out
J1850 (OBDII)
(4)
gpio_1
Input-Out
Universal Input/Out 1
(3)
l_line
Input-Out
ISO 9141-2 L-Line (OBDII)
(4)
k_line
Input-Out
ISO 9141-2 K-Line (OBDII)
(4)
CAN Н1
Input-Out
CAN 1 (2,5 to 3,5 V)
CAN L1
Input-Out
CAN 1 (1,5 to 2,5 V)
Umic+
Out
Supply microphone
mic +
Input
Microphone
mic -
Input
Microphone
Umic-
Out
supply microphone
(2)
(2)
No
No
No
No
J1850+
Input-Out
J1850 (OBDII)
(4)
gpio_2
Input-Out
Universal Input/Out 2
Ground
Input
Ground
USB d+
Input-Out
USB data
gpio_3
Input-Out
Universal Input/Out 3
CAN H2
Input-Out
CAN 2 (2,5 to 3,5 V) (OBDII or FMS)
CAN L2
Input-Out
CAN 2 (1,5 to 2,5 V) (OBDII or FMS)
Uacc+
Input-Out
Supply accelerometer
ACC _1
Input
accelerometer – signal 1
ACC _2
Input
accelerometer – signal 2
ACC _3
Input
accelerometer – signal 3
Uacc-
Out
Supply accelerometer
Ground
Input
Ground
USB d-
Input-Out
USB data
No
No
No
No
No
No
No
No
No
No
No
No
No
gpio_4
Input-Out
Universal Input/Out 4
No
signal_gnd
Input
Ground J1850 (OBDII)
(4)
radio_mute
Out
Mute sound
ecall_mode
Out
Status indicator Emergency Call
ignition
Input
State line ignition
Ground
Input
Ground
Ubat+
Input
External backup battery
Ubat-
Input
External backup battery
(2)
No
(1)
No
No
No
Yes
Yes
No
Notes:
(1) – Functionality “check the status of the ignition line” is mandatory to implement on the side of the
vehicle. This functionality should be implemented either through the use of signal 37 (ignition), or
through the use of signals 13 and 14 (CAN L1, CAN H1).
(2) - Functionality “ mute sound ” is mandatory to implement on the side of the vehicle. This
functionality should be implemented through the use of the 35 (radio_mute), or through the use of
signals 13 and 14 (CAN L1, CAN H1).
(3) - Pin 10 (gpio_1) recommend that you use to connect a signal about the accident, if the signal is
implemented in the car.
(4) - If the contact 12 is present in the socket, then use the protocol ISO 9141-2. If contact 12 is not in
the socket, then use SAE J1850 VPW (contacts 35 and 19) or SAE J1850 PWM (contacts 9, 19 and 34).
Recommended to use the connectors on the side of the vehicle
Category
vehicles
Main connector
GNSS
GSM/UMTS
FAKRA C
FAKRA D
953122-1
(MQS Tyco)
M1/N1
PLUG
5-1718321-3
(АМР МСР Tyco)
M2/M3/N2/
N3
PLUG
2. Connecting external devices to the terminal
2.1 Using RS485 bus
Pin Function Descriptions
Pin No.
Mnemonic
direction
Description
1
VBUS
Out
Supply Line
2
A
Input-Out
Data
3
B
Input-Out
Data
4
GND
Out
Ground
2.1.1 Recommendations for use
It is recommended to use 4-wire connector USCAR 347 930 040 Series Mini50 production Molex.
The system shall support Modbus RTU protocol to communicate with external devices connected over RS485
bus and support master role per below specifications:
MODBUS APPLICATION PROTOCOL SPECIFICATION. V1.1b
MODBUS over Serial Line. Specification and Implementation Guide. V1.02.
The system shall support below configuration parameters:
RS485_BAUD_RATE
RS485_STOP_BITS
RS485_PARITY.
The system shall support 1:1 and 1:N message transmission.
The system shall support up to 32 connected peripheral devices Diagnostics interface (if RS485 bus used for
Diagnostics interface as well).
2.2 Using USB
Pin Function Descriptions
Pin No.
Mnemonic
direction
Description
1
VBUS
Out
Supply 5 V
2
D-
Input-Out
Data
3
D+
Input-Out
Data
4
GND
Out
Ground
The interface must support the mode USB OTG.
It is recommended to use 4-wire connector USCAR 347 930 041 Series Mini50 production Molex.