CDC3231G-C Micronas Intermetall GmbH, CDC3231G-C Datasheet - Page 25

• Manufacturer Part Number: CDC3231G-C
• Description: ARM7-Based Car Dashboard Controller
• Manufacturer: Micronas Intermetall GmbH

CDC 3231G-C
ADVANCE INFORMATION
8. Hardware Options
8.1. Functional Description
Hardware Options are available in several areas to adapt the
IC function to the host system requirements. For details see
the document “CDC32xxG-C Automotive Controller - Family
User Manual, CDC3205G-C Automotive Controller” (6251-
579-1PD).
Hardware Option setting requires two steps:
1. selection is done by programming dedicated address loca-
tions in the HW Options field with the desired options’ code.
2. activation is done by copying the HW Options field to the
corresponding HW Options registers at least once after each
reset.
In this device, as in EMU and MCM devices, all HW Options
are SW progammable.
In future mask ROM derivatives the clock options and the
Watchdog, Clock and Supply Monitors may be hard wired
according to the HW Options field of the ROM code hex file.
Those options can only be altered by changing a production
mask.
To ensure compatible option settings in this IC and future
mask ROM derivatives when run with the same ROM code, it
is mandatory to always write the HW Options field to the HW
option registers directly after reset.
Micronas
25
June 30, 2003; 6251-609-2AI