tle4998s Infineon Technologies Corporation, tle4998s Datasheet - Page 23

• Manufacturer Part Number: tle4998s
• Description: Tle4998s/p-programming Guide
• Manufacturer: Infineon Technologies Corporation

• The two ID bits are free bits and can be used by the customer
• PC stands for precal bit. Infineon’s eval software toggles this bit after the first
• LH and LL are lock bits (LH locked if '1', LL locked if '0'). As soon as either LH, LL or
• All other parameters (G, OS, etc.) are are defined and explained in the datasheet
Note: Don’t forget to switch off the FEC during access of the EEPROM to read the data
4.3
Following steps are required to setup the EEPROM and to program new values,
assuming additional external memory called EEP_NEW (new EEP values), EEP_PROG
(for intermediate values) and EEP_OLD (current EEP values).
Application Note
even. The parity P
calculated in a way that the sum of bits is always odd
programming. This way it is possible to see whether a device has still the precalibrated
settings.
both are set to locked state, the interface mode cannot be accessed anymore.
Therefore, LH and LL can be used to lock the interface and avoid that the interface is
accessed and registers changed by mistake after final programming
actually stored in the EEPROM cells to detect possible faults.
Basic EEPROM Access and Programming Procedure
l
of every EEPROM line (adress 0x11 ... 0x1A) needs to be
21
TLE4998S/P-Programming Guide
Interface Access Details - Part III
V 1.1, 2008-08