AMIS-30621 datasheet(29/43 Pages) AMI

29 / 43 page

AMI Semiconductor - Rev. 1.4

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Sleep

This command is provided to the circuit by the LIN Master

to put all the Slave nodes connected to the LIN bus into

sleep mode. If this command occurs during a motion of the

motor, TagPos is reprogrammed to SecPos (provided

SecPos

is different from “100 0000 0000”), or a SoftStop

is executed before going to sleep mode. See LIN 1.2

specification and § 9.2.2.7.

The corresponding LIN frame is a Master Request

Command Frame (identifier 0x3C) with Data byte 1

containing 0x00 while the followings contain 0xFF.

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

0x00

0xFF

Identifier

Data1

Data2

SoftStop

If a SoftStop command occurs during a motion of the

stepper motor, it provokes an immediate deceleration to

VMIN

(see § 8.3) followed by a stop, regardless of the

position reached. Once the motor is stopped, TagPos

ensure keeping the stop position.

Note

A SoftStop command occurring during a RunInit

sequence is not taken into account.

Command SoftStop occurs in the following cases:

- The chip temperature rises above the Thermal shutdown

threshold (see § 5 and § 9.2.2.5);

- The LIN Master requests a SoftStop. Hence SoftStop

will correspond to the following 2 Data bytes LIN writing

frame (type #1).

*) according to parity computation

If Broad = ‘0’ all the stepper motors connected to the LIN

bus will stop with deceleration.

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

ID4

ID3

ID2

ID1

ID0

CMD[6:0] = 0x0F

Broad

AD[6:0]

Identifier

Data1

Data2

AMIS-30621 LIN Microstepping Motordriver

Data Sheet

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