THM3561 Datasheet, PDF (19/21 Pages) THine Electronics, Inc. – Stepping Motor Driver with LVDS Interface

THM3561_Rev1.01_E
Serial Interface Connections (continued)
[Cascade and multi-drop connection]
Figure 13. Cascade and Multi-drop Connection
Only address specification mode can be used for sensor signals in the case of multi-drop connection and cascade /
multi-drop mixed connection. In the case of using sensor signals, set the SDR_OUT output to which plurality of
devices are connected, to open drain mode (ODSDRn pin =“L”). Also, set the SDR_IN input of the opposite device to
internal pull-up ON (SDR_PUPn register = “L”).
In the case of using sensor signals for multi-drop connection (including mixing with cascade connection), the
transfer rate lowers drastically for CMOS connections when compared to the LVDS connection. In the case of
selecting this configuration, the use of LVDS connection is recommended. For details on communication rate etc., see
application note.
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