L6472 STMICROELECTRONICS [STMicroelectronics], L6472 Datasheet - Page 56

• Manufacturer Part Number: L6472
• Description: dSPIN fully integrated microstepping motor driver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Programming manual
9.2.3
9.2.4
56/69
SetParam (PARAM, VALUE)
Table 35.
The SetParam command sets the PARAM register value equal to VALUE; PARAM is the
respective register address listed in
The command should be followed by the new register VALUE (most significant byte first).
The number of bytes composing the VALUE argument depends on the length of the target
register (see
Some registers cannot be written (see
causes the command to be ignored and the WRONG_CMD flag to rise at the end of the
command byte as if an unknown command code was sent (see
Some registers can only be written in particular conditions (see
write one of these registers when the conditions are not satisfied causes the command to be
ignored and the NOTPERF_CMD flag to rise at the end of last argument byte (see
Section
Any attempt to set an inexistent register (wrong address value) causes the command to be
ignored and the WRONG_CMD flag to rise at the end of the command byte as if an
unknown command code was sent.
GetParam (PARAM)
Table 36.
This command reads the current PARAM register value; PARAM is the respective register
address listed in
The command response is the current value of the register (most significant byte first). The
number of bytes composing the command response depends on the length of the target
register (see
The returned value is the register one at the moment of GetParam command decoding. If
the register value changes after this moment, the response is not accordingly updated.
All registers can be read anytime.
Bit 7
Bit 7
0
0
9.1.19).
Bit 6
0
Bit 6
SetParam command structure
GetParam command structure
Table
Table
0
Table
Bit 5
9).
9).
0
Bit 5
9.
1
VALUE Byte 2 (if needed)
VALUE Byte 1 (if needed)
ANS Byte 2 (if needed)
ANS Byte 1 (if needed)
Bit 4
VALUE Byte 0
Doc ID 022729 Rev 1
Bit 4
ANS Byte 0
Table
Bit 3
Table
Bit 3
9.
PARAM
9); any attempt to write one of these registers
Bit 2
PARAM
Bit 2
Bit 1
Bit 1
Bit 0
Section
Table
Bit 0
9); any attempt to
9.1.18).
From host
From host
To host
To host
To host
L6472