參數(shù)資料
型號(hào): MSM6636JS
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類: 微控制器/微處理器
英文描述: 1 CHANNEL(S), 41.6K bps, LOCAL AREA NETWORK CONTROLLER, PQCC18
封裝: 0.290 INCH, 1.27 MM PITCH, PLASTIC, QFJ-18
文件頁數(shù): 3/72頁
文件大小: 707K
代理商: MSM6636JS
MSM6636/6636B User’s Manual
Communication Formats
2 – 1
2. COMMUNICATION FORMATS
2.1
Frame Format
SOF
(A)
(B)
(C)
(D)
CRC
EOD
(E)
EOF
IFS
3-byte header
Data
Response
101 bits maximum
SOF:
CRC:
EOD:
EOF:
IFS:
Start Of Frame
Cyclic Redundancy Check
End Of Data
End Of Frame
Inter-Frame Separation
Number of Bytes
Contents
(A)
1
Priority and message type
(B)
1
Physical address or functional address of receiver node
(C)
1
Physical address of transmitter node
(D)
(*)
Data
(E)
(*)
In-frame response (IFR)
*
The total sum of byte count of (D) + (E) is 0 to 8.
(A) Bit Configuration of Priority and Message Type
H(P3)
7
P2
6
P1
5
P0
4
K
3
Y
2
Z1
1
Z0
0
MSB
LSB
H:
0 = 3-byte header (MSM6636/6636B)
1 = 1-byte header (not applicable) (See Note below)
P2 to P0: Priority setting bits
Determines priority of message. The smaller the priority value, the higher the priority.
P2
P1
P0
00
0
00
1
11
0
11
1
Priority
High
Low
Note:
The 1-byte header mode is not selected even if “1” is set to “H” bit.
The 3-byte header mode is always selected.
In the MSM6636/6636B, the “H” bit is not used for selective control of the number of header bytes. However,
since “0” has priority over “1”, the priority control depends on the bit value in the “H” bit, that is, the “H” bit
can be used as “P3” priority setting bit.
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