- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
32
4.2. Parameter Control by Built-in CPU
4.2.1. Processing by CPU
Processing by CPU consists of initial (power-on/sequence) processing and main processing. Note that the
settings below are valid for only one initial process.
• Overwriting of parameters in EEPROM
• Settings of functions of port drivers (reflecting CAT20)
• System settings by running MODESEL (CAT12_Byte1_bit0-3)
• Serial communication protocol setting
4.2.2. CPU Main Processing and Firmware Applications
The main processing of CPU includes the sequencing of each field.
• Execute firmware applications and overwrite the hardware parameters (CAT1-11) for control.
• Execute the port drivers (= parameter control by setting port terminal)
* The values reflected by firmware application may be overwritten again.
Take care to ensure that controls are not duplicated while setting the port drivers.
• Execute commands through communication from PC or external microcomputer
* It is recommended that the execution of firmware application or execution of port drivers be stopped in order
to correctly reflect the parameter overwrite command. These should be stopped in Category 12 (CPU).
CPUHOLD (CAT12_Byte5_bit0) (=1[h]: Stop all firmware processes)
PDRHOLD (CAT12_Byte5_bit5) (=1[h]: Stop only port driver execution)
Parameters such as the above exist.
Sometimes EEPROM write and restart (reflected in initial processing) may be necessary for changes in
parameters for firmware applications such as settings of functions of port drivers.
Fig 4.2-1 Main Firmware Applications
Digital
Clamp
Blemish
Compensation
AE
WB
Ext-Sync
Adjustment
mode
Picture /
Suppress
OPD
arrangement
F/W main functions