參數(shù)資料
型號(hào)： AMIS-30621-AGA
元件分類： 運(yùn)動(dòng)控制電子
英文描述： STEPPER MOTOR CONTROLLER, 0.8 A, PDSO20
封裝： 300 INCH, PLASTIC, SOIC-20
文件頁(yè)數(shù)： 47/57頁(yè)
文件大?。?/td> 1017K
代理商： AMIS-30621-AGA
AMIS-30621 LIN Micro-stepping Motor Driver
Data Sheet
51
AMI Semiconductor
– Sept. 2007, Rev 1.5
www.amis.com
SetPositionShort
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 four bits, hence SetPositionShort can only be used with a network implementing a maximum of 16
slave nodes. These four address bits are corresponding to bits AD[3:0]. See Physical Address of the Circuit.
The priority encoder table (See Priority Encoder) acknowledges the cases where a SetPositionShort command will be ignored.
SetPositionShort
corresponds to the following LIN writing frames
1) Two data bytes frame for one motor, with specific identifier (type #2)
SetPositionShort Writing Frame
Byte
Content
Structure
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Identifier
*
0
ID4
ID3
ID2
ID1
ID0
1
Data 1
Pos[10:8]
Broad
AD [3:0]
2
Data 2
Pos [7:0]
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 SetPositionShort command.
2) Four data bytes frame for two motors, with specific identifier (type # 2)
SetPositionShort Writing Frame
Byte
Content
Structure
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Identifier
*
1
0
ID3
ID2
ID1
ID0
1
Data 1
Pos1[10:8]
1
AD1[3:0]
2
Data 2
Pos1[7:0]
3
Data 3
Pos2[10:8]
1
AD2[3:0]
4
Data 4
Pos2[7:0]
Where:
(*)
According to parity computation.
ID[5:0]:
Dynamically allocated identifier to four data bytes SetPositionShort command.
Adn[3:0]:
Motor #n physical address least significant bits (n
∈ [1,2]).
Posn[10:0]:
Signed 11-bit position set point for Motor #n (see RAM Registers).
3) Eight data bytes frame for four motors, with specific identifier (type #2)
SetPositionShort Writing Frame
Byte
Content
Structure
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Identifier
*
1
ID3
ID2
ID1
ID0
1
Data 1
Pos1[10:8]
1
AD1[3:0]
2
Data 2
Pos1[7:0]
3
Data 3
Pos2[10:8]
1
AD2[3:0]
4
Data 4
Pos2[7:0]
5
Data 5
Pos3[10:8]
1
AD3[3:0]
6
Data 6
Pos3[7 :0]
7
Data 7
Pos4[10 :8]
1
AD4[3:0]
8
Data 8
Pos4[7:0]
Where:
(*)
According to parity computation.
ID[5:0]:
Dynamically allocated identifier to eight data bytes SetPositionShort command.
Adn[3:0]:
Motor #n physical address least significant bits (n
∈ [1,4]).
Posn[10:0]:
Signed 11-bit position set point for motor #n (see RAM Registers).
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