MC68HC908AS60MFN MOTOROLA [Motorola, Inc], MC68HC908AS60MFN Datasheet - Page 328
MC68HC908AS60MFN
Manufacturer Part Number
MC68HC908AS60MFN
Description
HCMOS Microcontroller Unit
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AS60MFN.pdf
(454 pages)
- Current page: 328 of 454
- Download datasheet (6Mb)
Byte Data Link Controller-Digital (BDLC-D)
Technical Data
328
21.5.3.5
21.5.3.6
21.5.3.7
21.5.3.8
21.5.3.9
21.5.4
21.5.4.1
21.5.4.2
21.5.4.3
21.5.4.4
21.5.4.5
21.5.4.6
21.5.4.7
21.5.4.8
21.5.4.9
21.5.4.10
21.5.4.11
21.5.5
21.6
21.6.1
21.6.2
21.6.3
21.6.4
21.6.5
21.6.5.1
21.6.5.2
21.6.5.3
21.6.5.4
21.6.5.5
21.7
21.7.1
21.7.2
21.7.3
21.7.4
21.7.5
21.8
21.8.1
21.8.2
Freescale Semiconductor, Inc.
For More Information On This Product,
Byte Data Link Controller-Digital (BDLC-D)
BDLC Protocol Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
BDLC CPU Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
J1850 VPW Valid/Invalid Bits and Symbols . . . . . . . . . . . . 345
Message Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Protocol Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Rx and Tx Shift Registers. . . . . . . . . . . . . . . . . . . . . . . . . . 352
Rx and Tx Shadow Registers . . . . . . . . . . . . . . . . . . . . . . .353
Digital Loopback Multiplexer . . . . . . . . . . . . . . . . . . . . . . .353
State Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
BDLC Analog and Roundtrip Delay . . . . . . . . . . . . . . . . . .358
BDLC Control Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . 359
BDLC Control Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . 362
BDLC State Vector Register. . . . . . . . . . . . . . . . . . . . . . . . 370
BDLC Data Register
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373
Start-of-Frame Symbol (SOF) . . . . . . . . . . . . . . . . . . . . 344
End-of-Data Symbol (EOD) . . . . . . . . . . . . . . . . . . . . . . 344
End-of-Frame Symbol (EOF) . . . . . . . . . . . . . . . . . . . . . 344
Inter-Frame Separation Symbol (IFS) . . . . . . . . . . . . . . 344
Idle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Invalid Passive Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Valid Passive Logic 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Valid Passive Logic 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Valid EOD Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Valid EOF and IFS Symbols . . . . . . . . . . . . . . . . . . . . . 346
Idle Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .347
Invalid Active Bit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Valid Active Logic 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Valid Active Logic 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Valid SOF Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Valid BREAK Symbol. . . . . . . . . . . . . . . . . . . . . . . . . . . 349
4X Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .353
Receiving a Message in Block Mode . . . . . . . . . . . . . . . 354
Transmitting a Message in Block Mode . . . . . . . . . . . . . 354
J1850 Bus Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Go to: www.freescale.com
. . . . . . . . . . . . . . . . . . . . . . . . . . . .372
MC68HC908AS60 — Rev. 1.0
MOTOROLA
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