IC-PVL Datasheet, PDF (12/33 Pages) IC-Haus GmbH – LINEAR/OFF-AXIS BATTERY-BUFFERED HALL MULTITURN ENCODER

iC-PVL LINEAR/OFF-AXIS
preliminary
BATTERY-BUFFERED HALL MULTITURN ENCODER
OPERATING MODE SELECTION
Rev B3, Page 12/33
The input SEL defines the operating mode of iC-PVL.
For the default application as battery buffered multiturn
counter with serial position read-out (SSI Interface), it
is mandatory to connect the SEL input to GND poten-
tial. In case a three bit parallel and differential position
output is desired, a high state at SEL input selects a
parallel encoder mode. It is mandatory to connect SEL
to a defined high or low potential.
An additional operating mode is activated when SEL
is shorted to input PRE. In this mode, the preset pulse
does not trigger an EEPROM read-out. iC-PVL now
behaves as I²C slave and all registers (configuration,
position, status and command registers) are accessible
via I²C device ID 0xC1. These are the first seven bits of
the I²C addressing sequence, in binary representation
0b1100 001, this means group C = 0b1100, device 1 =
0b001.
The register layout visible via I²C is shown on page
11 for each particular address. Please note that some
addresses are read only.
iC-PVL ^{VBAT VDD}
EEPROM
SCL
SDA
I²C
MultiMaster
and Slave
RAM
Config
INT_MODE= 0
SSi Clock In
CLK
PRESET
DI
CLK
PRE
SEL
SSI Interface
Position
Operating Mode Selection
DO
SSI Data Out
DO
GND
Figure 3: SEL = low: serial interface SSI mode
PRESET
iC-PVL ^{VBAT VDD}
PRE
SEL
Position
Encode
010 001
011
000
100
111
101 110
Operating Mode Selection
GND
P0
Parallel Data Out
Bit0
N0
Bit0inv
P1
Bit1
N1
Bit1inv
P2
Bit2
N2
Bit2inv
Figure 5: SEL = high: parallel encoder mode
I2C Register
Access
SCL
SDA
iC-PVL ^{VBAT VDD}
SCL
SDA
I²C
Slave
RAM
Config
INT_MODE= 1
I2C_POS = 1
PRESET
PRE
SEL
Position
Operating Mode Selection
GND
Figure 4: SEL = PRE: I²C slave mode
iC-PVL ^{VBAT VDD}
EEPROM
SCL
SDA
I²C
MultiMaster
RAM
Config
INT_MODE= 1
Shift Data In
DI
CLK
Shift Clock
PRESET
DI
CLK
PRE
SEL
Shift Register
Position
Operating Mode Selection
DO
Shift Data Out
DO
GND
Figure 6: SEL = low: serial interface chain mode