Datasheet

Programming manual L6474
46/52 Doc ID 022529 Rev 3
Any attempt to read an inexistent register (wrong address value) causes the command to be
ignored and the WRONG_CMD flag to rise at the end of command byte, the same is true
when an unknown command code is sent.
9.2.5 Enable
The Enable command turns on the power stage of the device.
When the motor is in high-impedance state, an Enable command forces the bridges to exit
from high impedance state.
This command can be given anytime and is immediately executed.
9.2.6 Disable
The Disable command immediately disables the power bridges (high-impedance state) and
raises the HiZ flag.
This command can be given anytime and is immediately executed.
9.2.7 GetStatus
The GetStatus command returns the Status register value. The GetStatus command resets
the STATUS register warning flags. The command forces the system to exit from any error
state. The GetStatus command DOES NOT reset the HiZ flag.
Table 34. HardStop command structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 0 1 1 1 0 0 0 from host
Table 35. Disable command structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 0 1 0 1 0 0 0 from host
Table 36. GetStatus command structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 1 0 1 0 0 0 0 from host
STATUS MSByte to host
STATUS LSByte to host