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MSM9225B
Oki MSM9225B Manuals
Manuals and User Guides for Oki MSM9225B. We have
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Oki MSM9225B manual available for free PDF download: User Manual
Oki MSM9225B User Manual (92 pages)
CAN (Controller Area Network) Controller
Brand:
Oki
| Category:
Controller
| Size: 0.49 MB
Table of Contents
Table of Contents
5
Chapter 1 Overview
7
Overview
8
Features
8
Block Diagram
9
Configuration Example
9
Pin Configuration
10
Pin Descriptions
11
Chapter 2 Register Descriptions
13
Memory Space
14
Message Memory
16
Message Memory Related Register
17
Message Control Register (MCR: X0Hex)
17
Identifier 0 (IDR0: X1Hex)
20
Identifier 1 (IDR1: X2Hex)
21
Identifiers 2, 3, 4/Messages 0-7 (MSG0-7 in the Case of Standard Format; IDR2-4, TMSG0-7 in the Case of Extended Format: X3 to Xdhex)
21
Control Registers
29
CAN Control Register (CANC: 0Ehex)
30
CAN Interrupt Control Register (CANI: 0Fhex)
32
Message Box Count Setting Register (NMES: 1Ehex)
34
CAN Bus Timing Register 0 (BTR0: 1Fhex)
34
CAN Bus Timing Register 1 (BTR1: 2Ehex)
36
Communication Input/Output Control Register (TIOC: 2Fhex)
40
Group Message Register (GMR0: 3Ehex, GMR1: 3Fhex)
43
Group Message Mask Register (GMSK)
44
Standby Control Register (STBY: 8Ehex)
46
CAN Control Register 2 (CANC2: 8Fhex)
47
Communication Message Box Number Register (TMN: 9Ehex)
48
CAN Status Register (CANS: 9Fhex)
49
Transmit Error Counter (TEC: Aehex)
50
Receive Error Counter (REC: Afhex)
50
CAN Status Register 2 (CANS2: Behex)
51
Bus off Release Counter (BOCO: Bfhex)
52
Chapter 3 Operational Description
53
Operational Procedure
54
Initial Setting
54
Transmit Procedure
55
Receive Procedure
56
Message Box Rewrites During Operation
57
Remote Frame Operation
58
Automatic Response
58
Manual Response
60
Chapter 4 Microcontroller Interface
62
Serial Interface
63
Parallel Interface
65
MSM9225B Connection Examples
66
Microcontroller Interface
66
Address/Data Separate Bus (no Address Latch Signal)
66
Address/Data Multiplexed Bus
67
Address/Data Separate Bus (with Address Latch Signal)
67
Serial Interface
68
CAN Bus Interface
69
Directly Connected to Bus Transceiver (PCA82C250)
69
Electrically Isolated from Bus Transceiver (PCA82C250)
69
Monitoring the CAN Bus
70
Chapter 5 Electrical Characteristics
71
Electrical Characteristics
72
Absolute Maximum Ratings
72
Recommended Operating Conditions
72
DC Characteristics
73
Rx0, Rx1 Characteristics
73
Tx0, Tx1 Characteristics
73
AC Characteristics
74
Timing Diagrams
76
Separate Bus Mode
76
Separate Bus/Address Latch Mode
77
Multiplexed Bus Mode
78
Serial Mode
79
Other Timing
80
Appendix A Package Dimensions
82
Appendix B MSM9225B Memory Map
83
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