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AMIS-30621-ANA PDF预览

AMIS-30621-ANA

更新时间: 2024-01-09 19:51:31
品牌 Logo 应用领域
安森美 - ONSEMI 驱动器光电二极管电动机控制电机
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AMIS-30621-ANA 数据手册

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AMIS30621  
Table 55. SetPosition WRITING FRAME TYPE #4  
Structure  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Byte  
Content  
Identifier  
Data 1  
0
1
2
3
4
5
6
7
8
9
0
0
1
1
1
1
0
0
AppCMD = 0x80  
CMD[6:0] = 0x0B  
AD1[6:0]  
Pos1[15:8]  
Pos1[7:0]  
AD2[6:0]  
Data 2  
1
1
Data 3  
Data 4  
Data 5  
Data 6  
1
Data 7  
Pos2[15:8]  
Pos2[7:0]  
Data 8  
Checksum  
Checksum over data  
Where:  
Adn[6:0]: Motor #n physical address (n [1,2]). Posn[15:0]: Signed 16bit position setpoint for motor #n.  
SetPositionShort  
implementing a maximum of 16 slave nodes. These 4 bits  
are corresponding to the bits PA[3:0]in OTP memory. For  
SetPositionShortoperation: It is recommended to set  
HW0 and HW1 to ’1’. If the ADM bit is set to ’1’ the PA0  
bit in OTP has to programmed to ’1’. If the ADM bit is set  
to ’0’, HW2 has to be set to ’1’.  
This command is provided to the circuit by the  
LIN Master to drive one, two or four motors to a given  
absolute position. It applies only for half stepping mode  
(StepMode[1:0] = “00”) and is ignored when in other  
stepping modes. See Positioning for more details.  
The physical address is coded on 4 bits, hence  
SetPositionShortcan only be used with a network  
Two different cases must be considered, depending on the programmed value of the ADMbit in the OTP memory.  
Bit PA0 in OTP  
memory  
ADM  
AD[3]  
Pin HW0  
Pin HW1  
Pin HW2  
Tied to V  
0
1
1
X
0
1
AD[0]  
BB  
Tied to GND  
Tied to V  
1
1
Tied to V  
DD  
BB  
The priority encoder table (See Priority Encoder) describes the cases where a SetPositionShortcommand will be  
ignored.  
SetPositionShortcorresponds to the following LIN writing frames:  
1. Two (2) data bytes frame for one (1) motor, with specific identifier (type #2)  
Table 56. SetPositionShort WRITING FRAME TYPE #2  
Structure  
Bit 7  
Bit 6  
*
Bit 5  
Bit 4  
ID4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Byte  
Content  
Identifier  
Data 1  
0
1
2
3
*
0
ID3  
ID2  
ID1  
ID0  
Pos[10:8]  
Broad  
AD [3:0]  
Data 2  
Pos [7:0]  
Checksum over data  
Checksum  
Where:  
(*) According to parity computation  
Broad: If broad = ‘0’ all the stepper motors connected to the LIN bus will go to Pos[10:0].  
ID[5:0]: Dynamically allocated identifier to two data bytes SetPositionShortcommand.  
http://onsemi.com  
54  

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