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参数资料
| 型号： | MSM6636JS |
| 厂商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 1 CHANNEL(S), 41.6K bps, LOCAL AREA NETWORK CONTROLLER, PQCC18 |
| 封装： | 0.290 INCH, 1.27 MM PITCH, PLASTIC, QFJ-18 |
| 文件页数： | 35/72页 |
| 文件大小： | 707K |
| 代理商： | MSM6636JS |
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MSM6636/6636B User’s Manual
Function Details
5 – 2
2CH
FID #01
< Functional Address >
8-bit
× 15
↓
3AH
FID #15
2BH
PID #01
< Physical Address >
8-bit
× 1
Address Setting Register
2BH to 3AH
Note: The values of functional address registers (2CH to 3AH) are undefined at reset. Filtering is executed to the
entire #1 to #15 area, therefore be certain to set address values to the entire area, even if not all the 15 types
are used. In this case, set the same functional address values or invalid address values to areas not used.
5.3 Automatic Retransmission Function
When a message cannot be transmitted because of being lost in contention (when BUSY flag is set) or
communication errors (when ABN, D-P, FORM, or INV flag is set), and when a response is not normally returned
even if an in-frame response request is sent (when OVER, CRC, INV, FORM, ABN, or LEN flag is set), automatic
retransmission is possible.
Automatic retransmission can be set for contention loss time and for non-ACK time independently by setting the
“N1, N0” bits of the mode setting register.
For example, if transmission was not possible when “retransmission twice” was selected, this means that the
transmit operations were repeated a total of 3 times. When “no retransmission” was selected, if transmission was
not possible in the first transmission attempt, it notifies the CPU that transmission was not possible.
D2
D1
D0
N0
NAK
—
—N1
2AH
When lost in contention
0
Retransmission twice
1
No retransmission
In the case of non-ACK in IFR
0
Retransmission twice
1
No retransmission
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