AN 039
E981.55 EVALUATION BOARD
SEP 22, 2011
E981.55 FlexRay™ Transceiver - Evaluation Board
Figure 1: Evaluation Board
1 What you get
1. Evaluation board for the FlexRay™ Transceiver E981.55
2 What you need in addition
1.
2.
3.
4.
An external 12V power supply for VS
An external 5V power supply for VCC
Optional 3.3V power supply for VIO
Optionally an external voltage regulator with an INHIBIT input
3 Connectors
1. Connectors CON1 and CON2 provide all IC signals. Whereas the CON1 interfaces the external hardware CON2
may be used for probing.
- Supply pins: VS (reverse battery protected), VCC, VIO
- Inhibit INH and wake WAKE pin
- Communication pins TxEN, RxEN, TxD and RxD
- Bus guardian interface pin BGE
- Host interface pins EN, STBN and ERRN
ELMOS Semiconductor AG
Application Note 1/3
QM-No.: 25AN0039E.00
AN 039
E981.55 EVALUATION BOARD
SEP 22, 2011
2. Jumper J1 connects VCC and VIO in case both are operated at 5V
3. Jumper J2 allows a local wake-up on positive or negative edge at the pin WAKE
4. TP1 the bus lines (BP and BM) before the common mode choke (CMC) are available
5. TP2 and CON3 provide the FlexRay™ bus signals
4 Start of operation
1.
2.
3.
4.
3.
4.
5.
6.
7.
Connect 12V to VS
Connect 5V to VCC (or voltage regulator)
Connect 3.3V to VIO or set the jumper J1 in case VCC and VIO are both operated at 5V.
Connect TxD, TxEN, RxD and RxD to a FlexRay™ communication controller.
Connect CON3 to the FlexRay™ bus
Connect the HOST inteface (EN, STBN and ERRN) to the microcontroller
Terminate the WAKE pin (J2) depending on the edge on which the transceiver shoud wakeup
Connect RxEN and BGE to the microcontroller
(Optionally connect INH to an external voltage regulator)
ELMOS Semiconductor AG
Application Note
2/3
QM-No.: 25AN0039E.00
AN 039
E981.55 EVALUATION BOARD
SEP 22, 2011
2
5 Schematic
C1
100n
GND
3
TXD
4
TXEN
5
RXD
6
BGE
7
STBN
8
BP
VIO
BM
TXD
GND
TXEN
WAKE
RXD
VBAT
BGE
ERRN
STBN
RXEN
E981.55
C2
C6
100n 1u/50V
GND GND
15
4
14
3
13 GND
GND
D1
11 V B A T
10
9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CON2
VCC
VIO
GND
GND
VS
INH
WAKE
GND
TXEN
TXD
RXD
RXEN
BGE
EN
STBN
ERRN
HEADER16
R5
0R
2
2
1
3 1
B82789N
R9
47R 1%
R7
GND
0R
R6
0R
R10
47R 1%
C5
4.7n
GND
VS
S1G
C3
C8
100n 1u/50V
GND GND
VBAT
R3
10k
R2
ERRN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
L1
4
SJ3
12
RXEN
CON1
SJ2
WAKE
3.3k
C4
10n
GND
VCC
VIO
GND
GND
VS
INH
WAKE
GND
TXEN
TXD
RXD
RXEN
BGE
EN
STBN
ERRN
RG1
0R
J2
1
2
3
CON3
6
4
2
6
4
2
1
VIO
EN
16
2
2
VCC
5
3
1
5
3
GND
1
HEADER 3X2
TP2
D2
PESD1CAN
3
C7
GND
EN
INH
1
1u/50V
1
2
GND
INH
1
IC1
R1
100k
BP
J1
TP1
3
VCC
Pin3
Pin2
Pin1
Pin1
Pin2
Pin3
VCC
BM 3
VCC
GND
GND
R4
10k
GND
TP4
TP5
TP6
TP3
GND
GND
GND
GND
HEADER16
Figure 2: Schematic
Usage restrictions
ELMOS Semiconductor AG provide the E981.55 Evaluation Kit simply and solely for IC evaluation purposes in laboratory. The Kit or any part of the Kit must not be used for other purposes or within non laboratory environments. Especially the use or the integration in production systems, appliances or other installations is prohibited.
Disclaimer
ELMOS Semiconductor AG shall not be liable for any damages arising out of defects resulting from (1) delivered hardware or software, (2) non observance of instructions contained in this document, or (3) misuse, abuse, use under
abnormal conditions or alteration by anyone other than ELMOS Semiconductor AG. To the extend permitted by law
ELMOS Semiconductor AG hereby expressively disclaims and user expressively waives any and all warranties of merchantability and of fitness for a particular purpose, statutory warranty of non-infringement and any other warranty
or product liability that may arise by reason of usage of trade, custom or course of dealing.
ELMOS Semiconductor AG – Headquarters
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Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 159
sales@elmos.de | www.elmos.com
Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any
circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication
has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of
the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications.
Copyright © 2011 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.
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Application Note
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QM-No.: 25AN0039E.00