- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
37
Fig 5.1-2 Detailed DSP (CXD3172AR) System Initialization Sequence for SS-HQ1
Important
▪
After reset is canceled (XRST L-> H), EEPROM is still accessed for 80 ms, so save XRST=H. During this
time, if the power is cut or the system is reset again, the data stored in EEPROM may be corrupted.
▪
It takes 11 fields from when reset is canceled until initialization is complete (start of AE operation). This
does not include the time for black clamp, AE, or AWB convergence. (This is main routine processing.)
▪
If there is communication with an external microcomputer, it starts after the 11th field.
internal register
initialization
PDR initialization
EVR
communication
initialization
System settings
initialization for
external
communication
PDR control
Loading of parameters from
EEPROM or internal ROM values
Assignment of parameters and
functions to the port driver
CAS I/O and CSROM initialization
Reading of input port state and
incorporation in assigned
parameters
Setting of the TV system,
CCD type, and so on according to
MODESEL in the user settings
(subsequent MODESEL changes
do not take effect)
If SIFSEL is set to "H": setting
the transfer rate of RS-232C.
Detailed sequence of system
initialization