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參數(shù)資料
| 型號： | MSM9225GA-2K |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 2 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PQFP44 |
| 封裝： | 9 X 10 MM, 0.80 MM PITCH, PLASTIC, QFP-44 |
| 文件頁數(shù)： | 47/74頁 |
| 文件大小： | 487K |
| 代理商： | MSM9225GA-2K |
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Semiconductor
MSM9225
51/73
(f) Ack field
The field verifies correct reception.
The Ack field consists of a 1-bit Ack slot and a 1-bit Ack delimiter.
R
D
Ack field
ACK slot
(1 bit)
(CRC field)
(Ebd-of-frame)
Ack delimiter
(1 bit)
If the receive node detects an error between the start-of-frame and the CRC field, Ack slot =
"recessive" is output. If an error is not detected, Ack slot = "dominant" is output.
The transmit node outputs 2 "recessive" bits, and verifies the reception status of the receive node.
(g) End-of-frame
This frame indicates the completion of transmission or reception.
The end-of-frame consists of 7 "recessive" bits.
R
D
End-of-frame
(7 bits)
(Ack field)
(Interframe space or
overload frame)
(h) Interframe space
The interframe space is inserted between the data frame, remote frame, error frame, and
overload frame and the next frame. The interframe space indicates the separation between
frames.
Output is prohibited during intermission.
Error active: The interframe space consists of a 3- or 2-bit intermission and bus idle.
R
D
Interframe space
Intermission
(3/2 bits)
(Each frame)
Bus idle
(0 to bits)
(Each frame)
Error passive: The interframe space consists of intermission, suspend transmission, and bus
idle.
R
D
Interframe space
Intermission
(3/2 bits)
(Each frame)
Suspend transmission
(8 bits)
Bus idle
(0 to bits)
(Each frame)
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