IC-MQ Datasheet, PDF (34/39 Pages) IC-Haus GmbH – PROGRAMMABLE 9-BIT Sin/Cos INTERPOLATION IC WITH RS422 DRIVER

iC-MQ PROGRAMMABLE 9-BIT
Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
Rev D4, Page 34/39
Quick programming in the
single master system
For the purpose of signal conditioning it is possible
to reprogram iC-MQ quickly. If test mode is quit and
EMODE = 00, iC-MQ reads the configuration data in
again. In place of the standard EEPROM (DEVID
0x50) an EEPROM with a different device address can
be read in which can be stored under DEVID (address
0x00, bit 6:0).
In operating modes Mode ABZ, System Test and Mode
191/193 the content of the EEPROM is read in its en-
tirety. For other modes the address area is limited to
0x0-0x31 so that the configuration time for either cali-
bration or IC testing is shortened.
If the setup is switched to test mode during the readin
procedure, readin is aborted and only repeated once
test mode has been terminated.
Quick programming in the
multimaster system
Fast programming of iC-MQ, byte for byte, is possible
with a multimaster-competent programming device. To
this end the integrated I²C slave mode must be en-
abled by ENSL; iC-MQ then reacts to the device ID
0x55.
If no EEPROM is connected, iC-MQ automatically
sets the I²C slave mode enable (after a maximum of
150 ms, see Electrical Characteristics, D11) and deac-
tivates the digital section (ENSL = 1 and END = 0 are
set). Any number of bytes can be written at any one
time; the received data is accepted directly into the
RAM register. The conditions given in the following
table must be taken into consideration here. After pro-
gramming END = 1 must be set to restart sine-to-digital
conversion in the selected mode of operation.