SDA6000 Datasheet, PDF (127/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
System Control & Configuration
SCUSLS
Reset Value: 0000_H
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
STATE
SL
-
-
-
PASSWORD
r
r
r
Bit
Function
PASSWORD Current Password
SL
Current Security Level
‘00’: Unprotected Write Mode
‘01’: Low Protected Mode
‘10’: Reserved
‘11’: Write Protected Mode
STATE
Current State
‘000’: State 0 = Wait for Command 0.
‘001’: State 1 = Wait for Command 1.
‘010’: State 2 = Wait for Command 2.
‘011’: State 3 = Wait for new security level and new password
(Command 3).
‘100’: State 4 = Protected registers are unlocked. Write access to one
register is possible (only in low protected mode).
‘101’: Reserved
‘110’: Reserved
‘111’: Reserved
The following registers are defined as protected (security) registers:
• SYSCON1
• SYSCON2
• SYSCON3
Users Manual
6 - 10
2000-06-15