MSM6636/6636B User’s Manual
Contents
Contents – 1
Contents
1. OVERVIEW
1-1
1.1
Overview..................................................................................................................................................... 1-1
1.2
Features....................................................................................................................................................... 1-1
1.3
Pin Configuration........................................................................................................................................ 1-2
1.4
Pin Description ........................................................................................................................................... 1-3
1.5
Block Diagram............................................................................................................................................ 1-4
2. COMMUNICATION FORMATS
2-1
2.1
Frame Format.............................................................................................................................................. 2-1
2.2
PWM Bit Format ........................................................................................................................................ 2-4
3. INTERNAL REGISTER DETAILS
3-1
3.1
Transmit Register........................................................................................................................................ 3-1
3.2
Response Register....................................................................................................................................... 3-2
3.3
Transmit Status Register ............................................................................................................................. 3-2
3.4
Receive Register ......................................................................................................................................... 3-3
3.5
Receive Data Length Register..................................................................................................................... 3-5
3.6
Initialization/Read Completion Indication Register.................................................................................... 3-5
3.7
Interrupt Request Flag................................................................................................................................. 3-5
3.8
Interrupt Enable Flag (IE)........................................................................................................................... 3-7
3.9
Sleep Command Register............................................................................................................................ 3-7
3.10 Break Command Register ........................................................................................................................... 3-8
3.11 Mode Setting Register................................................................................................................................. 3-9
3.12 Physical Address Register......................................................................................................................... 3-10
3.13 Functional Address Register ..................................................................................................................... 3-10
3.14 NAK Register ........................................................................................................................................... 3-11
4. CPU INTERFACES
4-1
4.1
MSM6636 ................................................................................................................................................... 4-1
4.1.1
Clock Synchronous Serial Interface ...................................................................................................... 4-2
4.1.2
UART Interface (Start-Stop Synchronization System) .........................................................................4-5
4.2
MSM6636B ................................................................................................................................................ 4-8
4.2.1
Parallel Interface ................................................................................................................................... 4-8
5. FUNCTION DETAILS
5-1
5.1
Arbitration Function ................................................................................................................................... 5-1
5.2
Address Filter Function............................................................................................................................... 5-1
5.3
Automatic Retransmission Function ........................................................................................................... 5-2
5.4
CPU Interrupt Function............................................................................................................................... 5-3
5.5
Receive Message Length Error Detection Function ................................................................................... 5-3
5.6
Local-Station Bus Driver Abnormal Detection Function............................................................................ 5-3
5.7
Communication Check Function between Specific Nodes ........................................................................ 5-3
5.8
Communication Check Function between Multiple Nodes ........................................................................ 5-4
5.9
Break Function............................................................................................................................................ 5-4
5.10 Fault Tolerant Function............................................................................................................................... 5-5