1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS R ISO 11898 2CAN(Controller Area Network) 2： KS R ISO 11898 2： 2007 2007 9 28 http:/www.kats.go.krKS R ISO11898-2： 2007 ： ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ：2007 9 28 20070709 ： ： ( 025097294) (http:/www.kats.go.kr). 7 5 , . KS R ISO 11898 2： 200
2、7 CAN(Controller Area Network) 2： Road vehicles Controller area network(CAN) Part 2： High-speed medium access unit 2003 1 ISO 11898 2, Road vehicles Controller area network(CAN)Part 2： High-speed medium access unit , . 1 CAN(Controller Area Network) ( 1 Mbit/s) (Medium Access Unit： MAU) (Medium Depe
3、ndent Interface：MDI) . . 2 . . ( ) . KS R ISO 7637 3： 2004, , 3： 12 V 24 V ISO/IEC 8802 3 ： 1996, Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 3： Carrier sense multiple access with collision detecti
4、on(CSMA/CD) access method and physical layer specifications ISO 16845： 2004, Road vehicles Controller area network(CAN) Conformance test plan 3 . 3.1 (bus voltage) CAN CAN_L CAN_H VCAN_L VCAN_H3.2 KS R ISO11898-2： 2007 2 (common mode bus voltage range) VCAN_L VCAN_H . CAN . 3.3 (differential interna
5、l capacitance) CAN CdiffCAN CAN_L CAN_H 3.4 (differential internal resistance) CAN RdiffCAN CAN_L CAN_H 3.5 (differential voltage) CAN Vdiff CAN Vdiff VCAN_H VCAN_L3.6 (internal capacitance) CAN CinCAN CAN_L( CAN_H) 3.7 (internal delay time) CAN tnode CAN IC 3.8 (internal resistance) CAN RinCAN CAN_
6、L( CAN_H) 3.9 (Physical Layer： PL) CAN ( ) CAN CAN . CAN . KS R ISO11898-2： 2007 3 3.10 (physical media) EMC(Electromagnetic Compatibility： ) . CAN_L CAN_H CAN CAN_L CAN_H . , CAN_L , CAN_H . 4 CAN Controller Area Network ECU Electronic Control Unit HS MAU High Speed Medium Access Unit IC Integrated
7、 Circuit MAU Medium Access Unit MDI Medium Dependent Interface NBT Nominal Bit Time SOF Start of Frame 5 MAU 5.1 . , , 6. 7. . 5.2 5.2.1 1 A B . (reflection) . CAN , CAN . KS R ISO11898-2： 2007 4 ACAN 1 CAN 2 CAN nB 1 CAN , . , CAN . . , . (comparator) . 5.2.2 5.2.2.1 ( 2 ). VCAN_H VCAN_L . Vdiff .
8、. . . 5.2.2.2 CAN . Vdiff Vdiff . CAN . n KS R ISO11898-2： 2007 5 U t 2 5.3 MDI CAN . . 5.4 CAN . , CAN 3 . L l d 3 KS R ISO11898-2： 2007 6 6 6.1 MAU ISO 16845 . 4 12 7. . 6.2 CAN VCAN_H VCAN_L 4 ( ). Vdiff . Vdiff VCAN_H VCAN_L 1 CAN 2 4 VCAN_L VCAN_H 6.3 CAN 6.3.1 VCAN_H VCAN_L 5 ( CAN ). 1 CAN 2
9、5 CAN VCAN_L VCAN_H KS R ISO11898-2： 2007 7 Vdiff . Vdiff VCAN_H VCAN_L 6.3.2 CAN CAN 6 , CAN IC . I . , U( ) . V ( VCAN_H ) V ( VCAN_H Vdiff ) CAN . CAN IC . Vdiff U . 1 CAN 2 6 6.4 CAN CAN 7 , . 1 CAN 2 7 I KS R ISO11898-2： 2007 8 . , U( ) . V ( VCAN_L ) V ( VCAN_L Vdiff ) CAN . CAN IC . Vdiff U .
10、 6.5 CAN_L CAN_H 6.5.1 CAN_L CAN_H (Rin_L Rin_H) 8 , CAN IC . Rin_L Rin_H Rtest . UVVVRR=)(HCAN_L,testHin_L, VCAN_L VCAN_H 4 . 1 CAN 2 8 CAN IC Rin 6.5.2 CAN IC Rdiff 9 . Rdiff Rtest . UVVVRR=)(difftestdiff , Vdiff 6.3.1 . KS R ISO11898-2： 2007 9 1 CAN 2 9 CAN IC Rdiff 6.6 Cin Cdiff . Cbusin( 10 ) C
11、in( 11 ) 10 Cbusin 11 CAN Cin KS R ISO11898-2： 2007 10 . CAN (pF) . , . ibusinRC= iin2RC= , 63 % . Cdiff . 2inbusindiffCCC= 6.7 tnode CAN CAN . CAN (SOF) . CAN . tedge_to_edge . tedge 6 NBT (toutputRD toutputDR) tinputRD toutputRD tedge_to_edge 7 NBT sync sync tedge_to_edge (phasing) (CAN ： 1 tq). E
12、CU 12 . ： V 12 ECU KS R ISO11898-2： 2007 11 tinputRD CAN SOF . , ( ). . 13 . tinputRD toutputDR tsample NBT tx tinputRD toutputRD . ： V 13 7 HS MAU 7.1 1 Mbit/s . 1 14 10 . CAN . a) A b) B 14 KS R ISO11898-2： 2007 12 7.2 7.2.1 1 5 CAN . CAN . 1 VCAN_HV 2.5 7.0 VCAN_LV 2.0 2.5 CAN aVdiffmV 120 0 12 C
13、AN a CAN . Vdiff0 ( 4 ). Vdiff 1.2 V . 2 VCAN_HV 3.5 7.0 aVCAN_LV 2.0 1.5 CAN bVdiffV 1.2 2.0 3.0 CAN aVCAN_H VCAN_L Vdiff . VCAN_L VCAN_H Vdiff . bCAN Rdiff Vdiff . Vdiff CAN . Vdiff . 3 CAN VCAN_L VCAN_H aV V VCAN_H 3.0 16.0 12 VCAN_L 3.0 16.0 VCAN_H 3.0 32.0 24 VCAN_L 3.0 32.0 a , . KS R ISO11898
14、-2： 2007 13 4 CAN DC VCAN_HV 2.0 2.5 3.0 VCAN_LV 2.0 2.5 3.0 VdiffmV 500 0 50 Rdiffk 10 100 a bRink 5 50 cVdiffV 1.0 0.5 d, e a CAN_H CAN_L . RL CAN ( ) RL/2 . , RL CAN RL . , RL CAN_H CAN_L Rdiff (6.5.2 ). bCAN_H CAN_L Rin (6.5.1 ). , 3 % . c 0.3 V 0.5 V . CAN_H CAN_L ( ). d e 1 2 . 5 CAN DC VCAN_H
15、V 2.75 3.5 4.5 VCAN_LV 0.5 1.5 2.25 RL/2a VdiffV 1.5 2.0 3.0 RL/2a bVdiffV 0.9 5.0 RL/2a, c, da CAN_H CAN_L . CAN ( ) RL/2 . , CAN RL . , RL CAN_H CAN_L Rdiff . b 0.3 V 0.5 V . CAN_H CAN_L ( ). c d 1 2 . 7.2.2 7.2.2.1 1 CAN . KS R ISO11898-2： 2007 14 7.2.2.2 CAN_H CAN_L KS R ISO 7637 3： 2005( 3a 3b)
16、 . 7.3 CAN 7.3.1 3 CAN CAN_L CAN_H , CAN (6.2 6.3 ). 4 5 ISO 16845 6.2 6.7 CAN CAN_L CAN_H . 7.3.2 1 5 . 15 18 VCAN_H VCAN_L . KS R ISO11898-2： 2007 15 ts a b VCAN_H 15 VCAN_L CAN VCAN_H KS R ISO11898-2： 2007 16 ts a VCAN_H b VCAN_H 16 VCAN_L CAN VCAN_H KS R ISO11898-2： 2007 17 ts aVCAN_H 17 VCAN_L
17、CAN VCAN_H KS R ISO11898-2： 2007 18 ts a VCAN_H b VCAN_H 18 VCAN_L CAN VCAN_H 6 ISO 16845 6. CAN CAN_L CAN_H . KS R ISO11898-2： 2007 19 6 CAN AC tBs 1 a CinpF 20 c bCdiffpF 10 1 Mbit/s a 1 Mbit/s . IC . b . . CinCdiff 0 . l d ( 11 a ). CAN Vdiff 0.9 V Vdiff 0.5 V ( 4 5 ). cHF CAN_H CAN_L 1 Mbit/s UST 7 . 7 UST 1 2 ULV 5 0 UHV 0 5 7.4 MDI ( ) CAN 8 . 8 VBAT 12 V U V 16 VBAT 24 V U V 32 I mA 0 25 80 aIPmA 500 f MHz 25 bRTm 70 a ： 101 tBb CAN CAN . CAN . 7.5 7.5.1 KS R ISO11898-2： 2007 20 CAN . . 9 . 9 ( ) Z 95 120 140 R m/m 70 a ns/m 5 b a CAN CAN CAN . CAN . b 0
