THM3561 Datasheet, PDF (4/21 Pages) THine Electronics, Inc. – Stepping Motor Driver with LVDS Interface

THM3561_Rev1.01_E
Pin List (continued)
Table 2. Pin Overview (continued)
Pin name
Pin number Type^*1
Description
ROSC
48
Internal oscillator frequency setting
IN
Connect 47komh resistance between this pin and reference potential
PGND
24,25,36,37 PS
Power ground
GND
19,21
PS
Ground
EXPGND 49
PS
Exposed pad（Ground）
*1: CLO = CMOS level or LVDS output, CLI = CMOS level or LVDS input, PS = Power supply,
OD = Open drain output, OM = Motor drive output, IN = control input
Interface Mode Pin Setting
The #3_SDA_INn pin changes to “OMODE” pin (name) when used with 3-wire or 4-wire CMOS inputs
The interface mode of the serial signal for motor control and serial signal for sensor signal transfers can be selected
by setting IMODE1, IMODE0 pin and OMODE pin. Set as described in the following table depending on the
connection point.
ï½¥Name of serial signal pin for motor control and name of serial signal for sensor signal transfer mentioned in the pin
list are the pin names at the time of LVDS I/O setting.
･The #5_SCL_INn pin should be connected to “Low” level, if it uses a 3-wire CMOS input.
Table 3. Interface Mode Setting
Description Pin#
LVDS input
(IMODE0=H /
IMODE1=L)
LVDS output
3-wire CMOS input
(IMODE0=L / IMODE1=H)
LVDS output
(OMODE=L)
3-wire CMOS
output
(OMODE=H)
4-wire CMOS input
(IMODE0=H / IMODE1=H)
LVDS output
(OMODE=L)
3-wire CMOS
output
(OMODE=H)
Serial signal for the motor control (Forward-Serial)
Data
input
Clock
input
Data
output
Clock
output
3 SDA_INn (Diff.-)
OMODE（for details on High/Low settings, refer to the above mentioned）
4 SDA_INp (Diff.+)
SDA_IN
SI
This should be connected to Low level, if
5 SCL_INn (Diff.-)
CSn
it uses a 3-wire CMOS input
6 SCL_INp (Diff.+)
SCL_IN
SCK
7 SCL_OUTp (Diff.+)
SCL_OUTp
SCL_OUT
SCL_OUTp
SCL_OUT
8 SCL_OUTn (Diff.-)
SCL_OUTn
(NC)
SCL_OUTn
(NC)
9 SDA_OUTp (Diff.+) SDA_OUTp
SDA_OUT
SDA_OUTp
SDA_OUT
10 SDA_OUTn (Diff.-)
SDA_OUTn
(NC)
SDA_OUTn
(NC)
Serial signal for sensor signal transfer (Reverse-Serial)
Output
Input
1 SDR_OUTn(Diff.-)
2 SDR_OUTp(Diff.+)
11 SDR_INp(Diff.+)
12 SDR_INn(Diff.-)
SDR_INp
SDR_INn
SDR_IN
(NC)
(NC)
SO
SDR_INp
SDR_INn
SDR_IN
(NC)
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