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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)： | 17/72頁 |
| 文件大?。?/td> | 707K |
| 代理商： | MSM6636JS |
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MSM6636/6636B User’s Manual
Internal Register Details
3 – 9
3.11 Mode Setting Register
D2
D1
D0
PB0
NB0
NAK
N1
N0
MSB
LSB
2 A
... Mode Setting Register
Setting division ratio of source oscillation (D2 to D0)
The internal selectable frequency divider will realize J1850 specified transmission speed from various source
oscillation such as CPU clock out or other oscillator.
Set the division ratio according to the source oscillation for use by referring to the table below.
D2, D1 and D0 = 1, 1, 1 are used for bus monitor. For details, see Section 8, “Bus Monitor Function.”
Source Oscillation
Division Ratio
D2
D1
D0
4 MHz
1/4
000
5 MHz
1/5
001
8 MHz
1/8
010
10 MHz
1/10
0
1
12 MHz
1/12
1
0
16 MHz
1/16
1
0
1
2 MHz
1/2
110
Selecting NAK return yes/no (NAK)
This bit selects whether NAK register contents should be sent as a response or not when the
MSM6636/6636B is not in response standby status and receives a response request in IFR type 3.
0: Do not return NAK register value
1: Return NAK register value
Setting automatic retransmission function (N1, N0)
(N1) Selecting the function of retransmission in the case of non-ACK
0: Retransmission twice
1: No retransmission
This is a function that automatically retransmits when a response is not returned even though an IFR request
was sent.
(N0) Selecting the function of retransmission in the case of being lost contention.
0: Retransmission twice
1: No retransmission
This is a function that automatically retransmits when lost in contention during simultaneous transmission.
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