THM3561 Datasheet, PDF (16/21 Pages) THine Electronics, Inc. – Stepping Motor Driver with LVDS Interface

THM3561_Rev1.01_E
Register Map
This product controls the operation of the output transistor by setting a value in the internal register using serial
communication. The function differs depending upon the operation mode and hence, check the mode that is set at the
external pin (DMODE) in the following table.
Register address
(Run command)
Bit
7
6
5
4
8'h00
3
2
1
0
Table 17. Register Map
(a) Phase input mode (DMODE = “Low”)
Default Function
Description
SDR_IN(*1) Pull-up setting
0
SDR_PUPn
0:ON 1:OFF
Reserved bit
0
Reserved
Please usually set to “0”.
Blank function setting
0
BLANK_EN
Please usually set to “1”.
Blank time driver ON 0:1CLK 1:3CLK
0
BLANK_SEL
Setting(*2) driver OFF 0:2CLK 1:4CLK
0
IN_B1
OUTB1 Output transistor
0:ON 1:OFF
0
IN_B0
OUTB0 Output transistor
0:ON 1:OFF
0
IN_A1
OUTA1 Output transistor
0:ON 1:OFF
0
IN_A0
OUTA0 Output transistor
0:ON 1:OFF
Register address
(Run command)
8'h00
(b) Clock input mode (DMODE = “High”)
Bit Default Function
Description
SDR_IN(*1) Pull-up setting
7
0 SDR_PUPn
0:ON 1:OFF
Reserved bit
6
0 Reserved
Please usually set to “0”.
Blank function setting
5
0 BLANK_EN
Please usually set to “1”.
Blank time driver ON 0:1CLK 1:3CLK
4
0 BLANK_SEL
Setting(*2) driver OFF 0:2CLK 1:4CLK
3
0
PEM
2
0
Set the excitations
2'b00: All output OFF 2'b01: 1phase excitation
2'b10: 2phase excitation 2'b11: 1-2phase excitation
Set the direction of step.(*2)
1
0 CW/CCW
0: CW 1: CCW
0
0 CK
Advance the internal step.
0 → 1: Advanced step other: kept step
(*1) The pin name varies depending upon the output mode. For details, see the Pin List.
In case of LVDS output, the SDR_INp pin is used as an internal pull-up and the SDR_Inn pin is used as
pull-down.
In the case of CMOS output, the SDR_IN pin is used as an internal pull-up.
(*2) CLK that becomes the standard of blank time becomes the internal OSCCLK (typ. 1.6MHz).
(*3) For details of the output transistor operation by step forward direction settings, see the items of [Clock
Input Mode] of Driver Operation Mode.
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