SDA6000 Datasheet, PDF (126/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
System Control & Configuration
The new password is defined with command 3 and stored in the according 8-bit field in
the SCUSLS register.
The SCUSLC register is defined as follows
SCUSLC
Reset Value: 0000_H
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
COMMAND
rw
Bit
Command
Function
Code of Command to be Executed
Command 0: ‘AAAA_H’
Command 1: ‘5554_H’
Command 2: ‘96 & inverse password’
Command 3: ‘000_b’ & new level & ‘000_b’ & new password
Command 4: ‘8E_H’ & inverse password (Command 4 unlocks protected
registers for one write access if current security level is in
low protected mode.)
The security level status register SCUSLS is a read only register which shows the
current password, the actual security level and the state of the switching state machine.
The SCUSLS is defined as follows:
Users Manual
6-9
2000-06-15