Datasheet

TMC4361A Datasheet | Document Revision 1.22 • 2017-JAN-12
148/230
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Read entire documentation; especially the “Supplemental Directives” on page 224.
 MAIN MANUAL 
N event can be used to latch external position register ENC_POS 0x50 to storage
register ENC_LATCH 0x51 (read access). Two choices are available: Continous latching
and single latching.
In order to continuously latch ENC_POS to ENC_LATCH on N event, do as
follows:
Action:
 Set clr_latch_cont_on_n = 1 ( ENC_CONF register 0x07).
 Set latch_enc_on_n = 1 ( ENC_CONF register 0x07).
Result:
On every N event ENC_POS register 0x50 is latched to ENC_LATCH register 0x51.
In order to only latch ENC_POS to ENC_LATCH for the next N event, do as
follows:
Action:
 Set clr_latch_cont_on_n = 0 ( ENC_CONF register 0x07).
 Set clr_latch_once_on_n = 1 ( ENC_CONF register 0x07).
 Set latch_enc_on_n = 1 ( ENC_CONF register 0x07).
Result:
When the next N event occurs, ENC_POS register 0x50 is latched to ENC_LATCH
register 0x51. After the particular N event, clr_latch_once_on_n is automatically reset
to 0.
N event can be used to latch internal position register X_ACTUAL 0x21 to storage
register X_LATCH 0x36 (read access). Two choices are available: Continous latching
and single latching.
In order to continuously latch X_ACTUAL to X_LATCH on N event, do as
follows:
Action:
 Set clr_latch_cont_on_n = 1 ( ENC_CONF register 0x07).
 Set latch_enc_on_n = 1 ( ENC_CONF register 0x07).
 Set latch_x_on_n = 1 ( ENC_CONF register 0x07).
Result:
On every N event X_ACTUAL register 0x21 is latched to X_LATCH register 0x36.
In order to only latch X_ACTUAL to X_LATCH for the next N event, do as
follows:
Action:
 Set clr_latch_cont_on_n = 0 ( ENC_CONF register 0x07).
 Set clr_latch_once_on_n = 1 ( ENC_CONF register 0x07).
 Set latch_enc_on_n = 1 ( ENC_CONF register 0x07).
 Set latch_x_on_n = 1 ( ENC_CONF register 0x07).
Result:
When the next N event occurs, X_ACTUAL register 0x21 is latched to X_LATCH register
0x36. After the particular N event, clr_latch_once_on_n is automatically reset to 0.
Latching
External Position
Continous
Encoder
Latching
Single Encoder
Latching
Latching
Internal Position
Continous
Latching
Single Latching