ISO 11898-6:2013 全文(选择性唤醒)

标准信息:Road vehicles — CAN — Part 6: High-speed medium access unit with selective wake-up functionality,ISO 2013 年发布(编号 55101);后并入 ISO 11898-2:2016。 全文定位:完整正文站内查阅,章节结构与表格已保留(自动提取整理)。

← 返回标准查阅 INTERNATIONAL STANDARD ISO 11898-6 First edition 2013-11-01 Road vehicles —Controller area network(CAN) 一 Part 6: High-speed medium access unit with selective wake-up functionality Véhicules routiers—Gestionnaire de réseau de communication CAN— Partie 6:Unité d’accès au médium haute vitesse avec fonctionnalité de réveil sélectif Copyright International Organization for Standardization Provided by IHS under license with various National Standards Bodies No reproduction or networking permitted without license from IHS Licensee=Universita di Bologna/5930975001,User=bao,zhou Not for Resale,01/11/201718:44:04 MST Reference number ISO11898-6:2013(E) @ISO 2013 ISO11898-6:2013(E) COPYRIGHT PROTECTED DOCUMENT C ISO 2013 All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized otherwise in any form or by any means,electronic or mechanical,including photocopying,or posting on the internet or an intranet,without prior written permission.Permission can be requested from either ISO at the address below or ISO’s member body in the country of the requester: ISO copyright office Case postale 56·CH-1211 Geneva 20 Tel.+41227490111 Fax+41227490947 E-mail copyright@iso.org Web www.iso.org Published in Switzerland Copyigh iemationa Organization fr Standardzation CISO 2013-All rights reserved Licensee=Universita di Bologna/5930975001,User=bao,zhou Not for Resale,01/11/201718:44:04 MST ISO11898-6:2013(E) Contents Page Copyight Intemationa orgGISO 913arazAll rights reserved Provided byIHS underlicensewith various National Standards Bodies No reproduction or networking permited withoutlicense from IHS iii Licensee =Universita di Bologna /5930975001, User =bao , zhou Not for Resale ,01/11/2017 18:44:04 MST Foreword ISO(the International Organization for Standardization)is a worldwide federation of national standards bodies (ISO member bodies).The work of preparing International Standards is normally carried out through ISO technical committees.Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.International organizations,governmental and non-governmental,in liaison with ISO,also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC)on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives,Part 1.In particular the different approval criteria needed for the different types of ISO documents should be noted.This document was drafted in accordance with the editorial rules of the ISO/IEC Directives,Part 2(see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.ISO shall not be held responsible for identifying any or all such patent rights.Details of any patent rights identified during the development of the document will be in the Introduction and/orr on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,as well as information about ISO’s adherence to the WTO principles in the Technical Barriers to Trade(TBT)see the following URL:Foreword-Supplementary information The committee responsible for this document is ISO/TC 22,Road vehicles,Subcommittee SC 3,Electrical and electronic equipment. ISO 11898 consists of the following parts,under the general title Road vehicles —Controller area network (CAN): —Part 1:Data link layer and physical signalling —Part 2:High-speed medium access unit —Part3:Low-speed,fault-tolerant,medium-dependent interface —Part 4:Time-triggered communication —Part 5:High-speed medium access unit with low-power mode —Part 6:High-speed medium access unit with selective wake-up functionality CISO 2013-All rights reserved Provided by IHS under license with various National Standards Bodies No reproduction or networking permited without license from IHS ISO11898-6:2013(E) Introduction This International Standard was first published as one document in 1993.It covered the controller area network (CAN)data link layer,as well as the high-speed physical layer. In the reviewed and restructured ISO 11898 series: 一 ISO 11898-1 describes the data link layer including the logical link control (LLC)sublayer and the medium access control (MAC)sublayer as well as the physical signalling(PHS)sublayer; —ISO 11898-2 defines the high-speed medium access unit(MAU); —ISO 11898-3 defines the low-speed fault-tolerant medium access unit(MAU); —ISO11898-4 defines the time-triggered communication; —ISO 11898-5 defines the power modes of the high-speed medium access unit(MAU); 一 ISO 11898-6 defines the selective wake-up functionality ofthe high-speed medium access unit(MAU). Copyight Intemationa orgGISO913arazAll rights reserved V Provided by IHS under license with various National Standards Bodies No reproduction or networking permited without license from IHS Copyright International Organization for Standardization Provided by IHS under license with vaious National Standards Bodies No reproduction or networking permited without license from IHS INTERNATIONAL STANDARD ISO 11898-6:2013(E) Road vehicles—Controller area network(CAN) 一 Part 6: High-speed medium access unit with selective wake-up functionality

1 Scope

This part of ISO 11898 specifies the controller area network (CAN)physical layer for transmission rates up to 1 Mbit/s.It describes the medium access unit(MAU)functions. This part of ISO 11898 represents an extension of ISO 11898-2 and ISO 11898-5,specifying a selective wake-up mechanism using configurable CAN frames. Physical layer implementations according to this part of ISO 11898 are compliant with all parameters of ISO 11898-2 and ISO 11898-5.Implementations according to this part of ISO 11898,ISO 11898-2,and ISO 11898-5 are interoperable and can be used at the same time within one network.

2 Normative references

The following documents,in whole or in part,are normatively referenced in this document and are indispensable for its application.For dated references,only the edition cited applies.For undated references,the latest edition of the referenced document (including any amendments)applies. ISO 7637-3,Road vehicles —Electrical disturbances from conduction and coupling —Part 3:Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines ISO11898-1,Road vehicles—Controller areanetwork (CAN)—Part1:Data linklayerand physical signalling ISO 11898-2:2003,Road vehicles—Controller area network(CAN)—Part 2:High-speed medium access unit ISO 11898-5:2007,Road vehicles—Controller area network (CAN)—Part 5:High-speed medium access unit with low-power mode

3 Terms and definitions

For the purposes of this document,the terms and definitions given in ISO 11898-1,ISO 11898-2,and ISO 11898-5 and the following apply. 3.1 bias unit subpart of the transceiver which provides the biasing voltage Note 1 to entry: Figure 1 depicts the subparts of atransceiver. 3.2 bit rate number of bits per time during transmission,independent of bit representation 3.3 CAN node communication participant of the CAN system which contains typically a transceiver,a CAN controller; and a processing unit Copyight Intemationa orgGISO913arazAll rights reserved 1 Provided by IHS under license with various National Standards Bodies No reproduction or networking permited without license from IHS ISO11898-6:2013(E) 3.4 CAN controller subpart of a CAN node which implements the data link layer protocol and the physical signalling as defined in ISO 11898-1 3.5 data mask bit optional configuration bit to disable the data length code(DLC)and data field judgment for the wake-up frame validation 3.6 decoding unit subpart of the control unit with selective wake-up function which analyses the CAN communication to detect wake-up frames Note 1 to entry: Figure 1 depicts the subparts of atransceiver. 3.7 mode control unit subpart of the transceiver with selective wake-up function which controls all functions and otherr subparts of a transceiver Note 1 to entry: Figure 1 depicts the subparts of a transceiver. 3.8 selective wake-up functionality of a transceiver to make the operation of a CAN system with partial networking possible 3.9 receiver subpart of the transceiver which is responsible to transform physical bus signals to logical signals and provides them to the CAN controller Note 1 to entry:Figure 1 depicts the subparts of a transceiver. 3.10 transceiver component that adapts logical signals to the physical layer and vice versa Note 1 to entry: Figure 1 depicts the subparts of a transceiver. 3.11 transmitter subpart of atransceiver which is responsible to transform logical signals to physical bus signals and sets them on the bus Note 1 to entry: Figure 1 depicts the subparts of atransceiver. 3.12 CAN activity filter time (of a CAN node) tFilter duration of dominant and recessive bus-levels on the bus lines CAN_H and CAN_L for detecting activity on the CAN bus 3.13 wake-up frame CAN frame which causes a wake-up of one or more CAN nodes after being analysed Copyrigt 1 emationa rganizatio for Stnardzation CISO 2013-All rights reserved Licensee=Universita di Bologna/5930975001,User=bao,zhou Not for Resale,01/11/201718:44:04 MST ISO11898-6:2013(E) Figure 1—Subparts of a transceiver 3.14 wake-up pattern two periods of dominant bus-levels,separated by a period of recessive bus-level each of at leasttFilter

4 Symbols and abbreviated terms

Forthe purposes ofthis document,the symbols and abbreviated terms given in ISO 11898-1,ISO 11898-2, and ISO 11898-5 and the following apply. ID Identifier field PHS Physical signalling RIN Internal receiver input resistors VCAN_H Voltage on CAN_H bus line VCANL Voltage on CAN_L bus line Vdiff Differential CAN voltage(=VCAN_H-VCAN_L) WUF Wake-up frame WUP Wake-up pattern Copyright Interational orgCISO1o813arazAll rights reserved 3

5 Functional description of medium access unit (MAU)with selective wake-up functionality

5.1 General

This specification discloses the respective hardware functionalities for CAN high-speed transceivers with selective wake-up capability.The transceivers with this capability shall be interoperable with CAN transceivers according to ISO 11898-2 and ISO 11898-5(for details,see Clause 7). If CAN transceivers with selective wake-up function are used,it is possible to define sub-networks of nodes,which only change to active state if they receive a configured wake-up frame. The node state is changed from inactive to active only if the transceiver has received a frame and accepted it as awake-up event.Acceptance ofaCAN frame as awake-up eventis done bythe mode control unit of the transceiver by comparing configured and received ID and,if not disabled,DLC and data. Configuration is done via implementation specific interfaces (e.g.host interface).In case of erroneous communication,the transceiver shall wake-up upon or after an overflow of the internal error counter. CAN transceivers with selective wake-up function are able to recognize and decode CAN frames by the decoding unit.An automatic voltage biasing function at CAN_H and CAN_Lis used in CAN transceivers with selective wake-up function.

5.2 Compliance classes

The following compliance classes are defined. —Compliant to ISO 11898-6: The CAN transceiver fulfils all requirements of this part of ISO 11898. —Compliant to automatic voltage biasing as defined in ISO 11898-6: The CAN transceiver fulfils only the requirements of the automatic voltage biasing at the CAN pins (see 5.4.3.2).

5.3 Configuration and status data

5.3.1 General

The transceiver shall support read access to all its configuration data.

5.3.2 List of configuration data

The following configuration data are given. 一 ID (mandatory) 一 ID mask (mandatory) 一 DLC (mandatory) 一 Data field bits (mandatory) 一 Bit rate (mandatory) 一 Data mask bit (optional) 一 Frame error counter overflow threshold value (optional) Copyigh ntemationa Organization fr Standardzation CISO 2013-All rights reserved Licensee=Universita di Bologna/5930975001,User=bao,zhou Not for Resale,01/11/201718:44:04 MST ISO11898-6:2013(E)

5.3.3 List of status data

Furthermore,the following status data are defined. 一 Frame error counter value (optional)

5.3.4 Optional support of data mask bit

Optionally,a data mask bit can be implemented to indicate if the DLC and data field bits shall be part of the WUF validation(data mask bit set)or if only the ID field shall be considered for the WUF validation (data mask bit not set). If the data mask bit is not implemented,the DLC and data field bits shall be part of the WUF validation.

5.4 Physical medium attachment sublayer specification

5.4.1 General

Two different termination models are recommended for the high-speed medium access unit according to Figure 2: —termination with single resistor between CAN_H and CAN_L; —splittermination dividing the single resistor into two resistors with same value in series connection, while the centretap is connected to a grounding capacitor and optionally to a dedicated split supply.

CAN_H	CAN_H	CAN_H			CAN_H
RL	Transceiver
Split
(optional)	Cspit	主	1/2 RL	Transceiver
Split
(optional)
				1/2 RL
CAN_L	CAN_L	CAN_L			CAN_L

Figure 2—Termination variants,single-resistor termination,and split termination In order to support low-power functionality,two different modes of operation are defined as follows. 一 Normal mode: (as defined in ISO 11898-2) 一 Low-power mode,which is split into the two following sub-states: 一 without selective wake-up function:(as defined in this part of ISO 11898 and in ISO 11898-5) 一 with selective wake-up function: (as defined in this part of ISO 11898)

5.4.2 Bus levels during normal mode

The CAN bus lines have one of the two logical states:recessive or dominant (see Figure 3). The bus lines are in recessive state if the transmitters of all CAN nodes are switched off.In this case, the mean bus voltage is generated by the termination and by the internal resistance of each CAN node’s receiver.In the recessive state,VCAN_H and VCAN_L are fixed to a mean voltage level determined by the bus termination.Vdiff is less than a maximum threshold.The recessive state is transmitted during bus idle (see ISO 11898-1)ora recessive bit.Figure 3illustrates the maximum allowed differential recessive bus voltage.Typically,the differential voltage is about 0V. Copyight Intemationa orgGISO913arazAll rights reserved 5 ISO11898-6:2013(E) Optionally,the recessive bus state can be stabilized,making use of a dedicated split termination voltage (Vsplit).This optional output voltage can be connected to the centre tap of the split termination resistors. Whenever the receiver is not actively biasing towards 2,5 V,the optional Vsplit shall become floating. A dominant bit is sent to the bus if the transmitter of at least one unit is switched on.This induces a current flow through the termination resistors and,consequently,a differential voltage between the two wires of the bus.A differential voltage greater than a minimum threshold represents the dominant state.The dominant state overwrites the recessive state and is transmitted during a dominant bit During arbitration,various CAN nodes can simultaneously transmit a dominant bit.In this case,Vdiff exceeds the Vdiff seen during a single operation.Single operation means that the bus is driven by one CAN node only. CAN_H RN RXD CAN_L RN V Blas Key a Optional. Figure 3—Physical bit representation and simplified diagram of transceiver bias implementation

5.4.3 Bus levels during low-power mode

5.4.3.1 General

During low-power mode,the transmitter shall be entirely disabled.Within low-power mode of a transceiver,it shall not be possible to actively drive a differential level to the bus lines.

5.4.3.2 Automatic voltage biasing in low-power mode

Compared to the low-power mode behaviour described in ISO 11898-5,the voltage biasing in low-power mode is different. Copyvigh nemationa Organization fr Standardzation CISO 2013-All rights reserved Licensee=Universita di Bologna/5930975001,User=bao,zhou Not for Resale,01/11/201718:44:04 MST ISO11898-6:2013(E) If there has been no activity on the bus for longer than tsilence,the bus lines shall be biased towards OV via the internal receiver input resistors RIN. If wake-up activity on the bus lines is detected(refer to 5.4.5.1),the bus lines shall be biased to 2,5 Vvia internal receiver input resistors RIn.The biasing is activated not later than tBias. Voltagebiasingofthebuslinesshall be possible,even ifonlythe batterysupply is connectedto thetransceiver: NOTE The transition from state “Ini”via state 1 and state 2 to state 3 describes a wake-up pattern detection following the definition in ISO 11898-5. Figure 4—WUP detection and bias control The detection of”bus dominant”and“bus recessive”depends on whether the transceiver is in normal mode or low-power mode;in low-power mode,the filter time tFilter is applied.The state-machine in Figure 4defines the biasing behaviour for all operation modes.When entering state 1 or 2,the optional timer twake is reset and restarts;when entering state 3 or 4,the timer tsilence is reset and restarts From the physical point of view,there are two defined operating conditions:biasing towards 2,5 V (bias on),whenever bus communication is active,and biasing towards OV(bias off),whenever the bus communication is inactive.Biasing is done via the internal receiver input resistors RIN. While the bias is off,the optional split termination voltage(Vsplit)output shall behave high-resistive (floating),in order not to increase the current consumption unnecessarily. If biasing is turned off,WUP detection shall be active. Copyight Intemationa orgGISO913arazAll rights reserved 7 Provided by IHS under license with various National Standards Bodies No reproduction or networking permited without license from IHS

5.4.4 Behaviour during transition from normal to low-power mode

If selective wake-up is enabled,decoding of CAN data and remote frames shall also be supported during mode transitions.If the received frame is a valid WUF,the transceiver shall indicate a wake-up.

5.4.5 Wake-up out of low-power mode

5.4.5.1 Wake-up pattern

During low-power mode,a transceiver shall monitor the bus lines,CAN_Hand CAN_L,for WUPs.A wake- up shall be performed if the selective wake-up function is disabled and a WUP has been received (i.e. being in state 3 or 4,see Figure 4). The individual time thresholds(tFilter,twake,tsilence)of the implementation can be adapted according to the target bit rate of the system.The time thresholds shall stay within the defined minimum and maximum timings as defined in Table 3.

5.4.5.2 Wake-up frame

5.4.5.2.1 General A transceiver with selective wake-up function shall monitor the bus lines,CAN_Hand CAN_L,for WUFs. A wake-up shall be performed if the selective wake-up function is enabled and a”valid WUF”has been received.After switching on the bias,the implementation can ignore up to four (or up to eight in case of a bit rate higher than 500 kbit/s)CAN data or remote frames and shall not ignore any following CAN data or remote frame. 5.4.5.2.2 Bit decoding A received frame shall be decoded correctly in case the timing of the analogue signal on the bus complies with one of the two following types of signals: —the bit stream consists of multiple instances of the signal shape A(to handle ringing); —the bit stream can be assembled out of multiple instances of the signal shape B1 and one instance of signal shape B2(to handle sender clock tolerance and loss of arbitration). These two types of signals are shown in Figure 5. Copyrigt nmationa rganizatio for Stnardzation CISO 2013-All rights reserved Licensee=Universita di Bologna/5930975001,User=bao,zhou Not for Resale,01/11/201718:44:04 MST ISO11898-6:2013(E) B1 B2 recessive dominant n1×tam×(1+drsi n₁×t Bit+tA n₂ ×tBit+tA Key n1 number of consecutive dominant bits{1,2,3,4,5} n2 number of bits between two falling edges{2,3,…,10};n2>n1 tA 0≤tA≤55%of tBit(product-specific higher maximum values fortAare allowed) tB 0≤tB≤5%of tBit(product-specific higher maximum values for tp are allowed) tBit bit time dfs transceivers according to this part of ISO 11898 shall tolerate sender clock frequency deviations up to at least±0,5% Figure 5—Signal shape A and B of analogue signal on the bus for bit reception Edges in the grey shaded time span of signal A shall be ignored and shall not cause decoding errors. 5.4.5.2.3 WUF validation If allof the following conditions are met,a valid frame shall be accepted as a valid WUF. 一 The received frame is a CAN data frame in case the optional data mask bit is set or not implemented. The frame might also be a remote frame in case the data mask bit is implemented and not set. 一 The ID (as defined in 8.4.2.2 in ISO 11898-1)of the received CAN frame is exactly matching a configured ID (in the control unit)in the relevant bit positions.The relevant bit positions are given by an ID mask(in the control unit).See this mechanism illustrated in 5.4.5.2.5. 一 The DLC(as defined in 8.4.2.3 in ISO 11898-1)of the received CAN data frame is exactly matching a configured DLC.Refer to 5.3.4 in case of an implementation of the optional data mask bit.See this mechanism illustrated in 5.4.5.2.6. 一 In case the DLC is greater than 0,the data field (as defined in 8.4.2.4 in ISO 11898-1)of the received frame has at least one bit set in a bit position which corresponds to a set bit in the configured data mask.Refer to 5.3.4 in case of an implementation of the optional data mask bit.See this mechanism illustrated in 5.4.5.2.7. —A correct cyclic redundancy check (CRC)has been received,including a recessive CRC delimiter and no error according to 10.9 in ISO 11898-1 is detected prior to the acknowledgement(ACK)Slot. Figure 6 depicts the bits which are considered as“don’t care”. Copyight Intemationa orgGISO913arazAll rights reserved 9 Provided by IHS under license with various National Standards Bodies No reproduction or networking permited without license from IHS ISO11898-6:2013(E) NOTE A CAN frame that is received with non-nominal substitute remote request (SRR)bit is accepted as a valid frame. “Don’t care”for wake-up and any bit after CRC delimiter until the next SOF Figure 6—“Don’t care”bits for frame decoding 5.4.5.2.4 Frame error counter mechanism Upon enabling the selective wake-up function and also on expiration oftsilence,the counter for erroneous CAN frames shall be setto zero.The initial value ofthe counter is zero.This counter shall be incremented by one when a bit stuffing,CRC,or CRC delimiter form error according to ISO 11898-1 is detected.If a frame has been received,which is valid according to the definition in 5.4.5.2.2, and the counter is not zero,then the counter shall be decremented by one.Dominant bits between the CRC delimiter and the end of the intermission field shall not increase the error counter. On each increment or decrement of the counter,the decoder unit in the transceiver shall wait for at least 6and at most 10 recessive bits before considering a dominant bit as a start of frame.Figure Z depicts the position of the mandatory start of frame (SOF)detection in case of a received CAN frame and in case of an error scenario.

CAN frame
	No SOF detection Mandatory SOF detection
Error scenario
	No SOF detection Mandatory SOF detection

Figure 7—Mandatory SOF detection after CAN frame and error scenario If the frame error counter overflow threshold value is not implemented (see 5.3.2) ,a wake-up shall be performed on counter overflow with the 32nd increment immediately or upon the next received WUP. If the frame error counter overflow threshold value is implemented,a wake-up shall be performed on counter overflow immediately or upon the next received WUP. Copyrigt 1e0at iona organizatio for Stnardzation CISO 2013-All rights reserved Licensee=Universita di Bologna/5930975001,User=bao,zhou Not for Resale,01/11/201718:44:04 MST ISO11898-6:2013(E) Up to four(or up to eight in case of data rate>500 kbit/s)consecutive CAN data and remote frames that start after switching on the bias might be either ignored (no error counter increase in case of failure)or judged as erroneous (error counter increase even in case of no error). If bit r0 and r1 values are inconsistent to ISO 11898-1 is not in the scope of this part of ISO 11898. 5.4.5.2.5 WUF ID evaluation A CAN-ID mask mechanism shall be supported to exclude ID-bits from comparison.11-bit and 29-bit CAN-IDs and ID-masks shall be supported. All masked ID bits except“don’t care”shallmatch exactly the configured ID bits.If the masked ID bits are configured as “don’t care”,then both“1”and“0”shall be accepted. Either“1”or“0”may represent“do not care”in the mask register. Figure 8 shows an example for valid WUF IDs corresponding to the ID mask register. Key d c “don’t care” “care” Figure 8—Example for ID masking mechanism 5.4.5.2.6 WUF DLC evaluation If the DLC is configured to be part of the WUFevaluation (refer to 5.3.4 ),then a frame can only be a valid WUF when the DLC of the received frame matches exactly the configured DLC. 5.4.5.2.7 WUF data field evaluation A frame can only be a valid WUF if at least one logic 1 bit within the data field of the received WUF matches to a logic 1 of the data field within the configured WUF. Figure 9 shows an example with a non-matching and a matching ID field. Copyight Intemationa orgGISO913arazAll rights reserved 11 ISO11898-6:2013(E)

Byte 6	…	Byte 0

Configured data field]	[	1 1 0 1 0 0	1 1 0 1 0 0	1 1 0 1 0 0	0 0	0 0		1[ 1 0 1 0 0 0 0	1[ 1 0 1 0 0 0 0	1[ 1 0 1 0 0 0 0	1[ 1 0 1 0 0 0 0	1[ 1 0 1 0 0 0 0	1[ 1 0 1 0 0 0 0	1[ 1 0 1 0 0 0 0	1[ 1 0 1 0 0 0 0	…	1 1 0 10 0 0 0	1 1 0 10 0 0 0	1 1 0 10 0 0 0
matching WUF data fields
Non-matching		0 0 0 1	0	0	0	0		0 0	0 0	0	0	0	0 0 0	0 0 0	0 0 0	…[	0 0 0 0 0 0 0 0	0 0 0 0 0 0 0 0	0 0 0 0 0 0 0 0
matching WUF data fields
Non-matching
matching WUF data fields
Non-matching		0 0 0 0 0	0 0 0 0 0	1	1	1		0	0	0	0	0	1	1	1		0 0 0	0	0 1 1 1

Figure 9—Example of the data field within the received CAN frame With this mechanism,it is possible to wake-up up to 64 independent groups of ECUs with only one wake-up frame.

6 Conformance tests

The conformance test case definition and measurement setups to derive the parameters are not in the scope ofthis part of ISO 11989.

7 Electrical specification of high-speed medium access unit (HS-MAU)

7.1 Physical medium attachment sublayer specification

7.1.1 Bus levels

All parameters according to bus levels are specified in ISO 11898-2:2003 and ISO 11898-5:2007.

7.1.2 Disturbance by coupling

The tolerated disturbances of CAN_H and CAN_L by coupling are defined in accordance with ISO 7637-3:1990,test pulses 3a and 3b.

7.2 CAN transceiver

7.2.1 General

All data given in Tables 1 and 2 are independent of a specific physical layer implementation.The parameters specified in these tables shall be fulfilled throughout the operating temperature range as specified for every individual CAN node. Table 1 defines the transceiver input leakage current at the bus pins if the transceiver is unpowered. Table 1—Transceiver input current(unpowered)

Parameter	Notation	Unit	Value	Value	Value	Condition
Parameter	Notation	Unit	min.	nom.	max.	Condition
Input leakage current	ICAN_H	μA	-10	一	+10	CAN_H and CAN_L=5V,allsupply volt- ages are shorted to GND.
Input leakage current	ICANL	μA	-10	一	+10	CAN_H and CAN_L=5V,allsupply volt- ages are shorted to GND.

7.2.2 Transceiver input and output levels

The parameters given in Table 2 shall be tested atthe CAN_Land CAN_Hpins ofeach CANnode,according to the conformance tests as specified in Clause 6 of ISO 11898-5:2007 and Clause 6 of ISO 11898-2:2003. All other transceiver input and output levels are specified in ISO 11898-2:2003 and ISO 11898-5:2007. Copyrigt 1a tiona organizatio for Stnardzation CISO 2013-All rights reserved Licensee=Universita di Bologna/5930975001,User=bao,zhou Not for Resale,01/11/201718:44:04 MST ISO11898-6:2013(E) Table 2—Transceiver DC parameters for recessive state

7.2.3 AC parameters

The parameters givenin Table 3 shall be tested atthe CAN_Land CAN_Hpins ofeach CANnode,according to conformance tests 6.6 in ISO 11898-2:2003 and 6.5 and 6.6 described in ISO 11898-5:2007. Table 3—Transceiver AC parameters Copyight Intemationa orgGISO913arazAll rights reserved 13 Provided by IHS under license with various National Standards Bodies No reproduction or networking permited without license from IHS ISO11898-6:2013(E) Bibliography [1] ISO 7498-1,Information technology—Open Systems Interconnection —Basic reference model: The Basic Model Copyrigt 14aiona organizatio for Stnardzation CISO 2013-All rights reserved Copyright International Organization for Standardization Provided by IHS under license with vaious National Standards Bodies No reproduction or networking permited without license from IHS ISO11898-6:2013(E) ICS 43.040.15 Price based on 14 pages OISOa3R12anoAJsrightsareserved Copyright Ir

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