IC-MHM Datasheet, PDF (32/63 Pages) IC-Haus GmbH – 14-BIT ABSOLUTE ANGLE HALL ENCODER

iC-MHM
14-BIT ABSOLUTE ANGLE HALL ENCODER
INSTRUCTION REGISTERS
Rev D1, Page 32/63
The iC-MHM provides three instruction registers which
are used to initiate a position preset sequence, reset
the device, set the state of the general-purpose discrete
outputs (when configured), and set the gain values for
the Hall signal amplifiers when the automatic amplitude
control is not used.
Reset and Preset
Bits in this register allow initiating a position preset se-
quence or resetting the iC-MHM.
Reset and
Preset
Bit
0
1
2
3
4
5
6
7
Address 0x74
Name
RESET
PRESET
-
-
-
-
-
-
Description
Device Reset
Initiate Absolute Position Preset
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Table 51: Reset, Preset Instruction Register
The reset instruction resets the device, but does not
read the configuration data from the EEPROM (if con-
nected). Refer to STARTUP AND OPERATION on page
57 for more information.
Discrete Output
The discrete output instruction register allows chang-
ing the state (output level) of the four general-purpose
discrete outputs (when configured).
Output
Bit
0
1
2
3
4
5
6
7
Note
Address 0x75
Name
Description
F_IO0
MCL: 0 = Low and 1 = High Level
F_IO1
P1: 0 = Low and 1 = High Level
F_IO2
P2: 0 = Low and 1 = High Level
F_IO3
P3: 0 = Low and 1 = High Level
-
Reserved
-
Reserved
-
Reserved
-
Reserved
All registers will be reset at power-on.
Table 53: Discrete Output Instruction Register
Refer to DIGITAL I/O PORT on page 26 for more in-
formation on configuring the port as general-purpose
discrete outputs.
Gain
The gain instruction register allows setting the gain val-
ues used by the Hall sensor signal amplifiers when the
automatic amplitude control is not used (ENAC = 0).
The gain values can be read out when the automatic
amplitude control is used (ENAC = 1).
Refer to POSITION OFFSET AND PRESET (Zero Po-
sition) on page 55 for more information on the position
preset sequence.
Writing to the reset and preset instruction register via
BiSS can be blocked to prevent the reset and preset
instructions from being executed.
Gain
Bits
5:0
7:6
Address 0x76
Name
GAINF
GAINR
Description
Fine Gain
Coarse Gain Range
Table 54: Hall Sensor Signal Amplifier Gain
INSPROT
Value
0
1
Addr. 0x0B; bit 1
Protection
Reset and Preset Not Protected
(Writing using BiSS allowed)
Reset and Preset Protected
(Writing using BiSS is not allowed)
Refer to SIGNAL CONDITIONING on page 18 for more
information on GAINR and GAINF.
Table 52: Instruction Register Protection