L6470HTR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
L6470HTR
STMicroelectronics
'L6470HTR' PDF : 70 Pages View PDF
L6470
Programming manual
9.1.22 STATUS
Table 34. STATUS register
Bit 15
Bit 14
Bit 13
Bit 12 Bit 11
Bit 10 Bit 9
Bit 8
SCK_MOD
Bit 7
STEP_LOSS_B STEP_LOSS_A OCD
Bit 6
Bit 5
Bit 4
TH_SD
Bit 3
TH_WRN UVLO WRONG_CMD
Bit 2 Bit 1
Bit 0
NOTPERF_CMD
MOT_STATUS
DIR SW_EVN SW_F BUSY
HiZ
When the HiZ flag is high, it indicates that the bridges are in high impedance state. Any
motion command makes the device exit from High Z state (HardStop and SoftStop
included), unless error flags forcing a High Z state are active.
The UVLO flag is active low and is set by an undervoltage lockout or reset events (power-up
included).
The TH_WRN, TH_SD, OCD flags are active low and indicate, respectively, thermal
warning, thermal shutdown and overcurrent detection events.
STEP_LOSS_A and STEP_LOSS_B flags are forced low when a stall is detected on bridge
A or bridge B respectively.
The NOTPERF_CMD and WRONG_CMD flags are active high and indicate, respectively,
that the command received by SPI cannot be performed or does not exist at all.
The SW_F flag reports the SW input status (low for open and high for closed).
The SW_EVN flag is active high and indicates a switch turn-on event (SW input falling
edge).
The UVLO, TH_WRN, TH_SD, OCD, STEP_LOSS_A, STEP_LOSS_B, NOTPERF_CMD,
WRONG_CMD and SW_EVN flags are latched: when the respective conditions make them
active (low or high), they remain in that state until a GetStatus command is sent to the IC.
The BUSY bit reflects the BUSY pin status. The BUSY flag is low when a constant speed,
positioning or motion command is under execution and is released (high) after the
command has been completed.
The SCK_MOD bit is an active high flag indicating that the device is working in Step-clock
mode. In this case the step-clock signal should be provided through the STCK input pin. The
DIR bit indicates the current motor direction:
Table 35. STATUS register DIR bit
DIR
Motor direction
1
Forward
0
Reverse
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