HD49334AHNP Renesas Electronics Corporation., HD49334AHNP Datasheet - Page 20

• Manufacturer Part Number: HD49334AHNP
• Description: Cds/pga & 10-bit A/d Converter
• Manufacturer: Renesas Electronics Corporation.

HD49334ANP/AHNP
Operation Sequence at Power On
Rev.2.00 May 20, 2005 page 18 of 21
V
Start control
of TG and
camera DSP
HD49334ANP/AHNP
serial data transfer
RESET bit
Automatic offset
calibration
The following describes the above serial data transfer. For details on registers 0, 1, 2, and 3, refer to table 10.
DD
(1) Register 2 setting
(2) Register 2 setting
(3) Register 0, 1 and 3 settings
SPBLK
SPSIG
ADCLK
OBP
etc.
or more
or more
0 ms
0 ms
: Set all bits in register 2 to the usage condition, and set the RESET bit to low.
: Cancel the RESET mode by setting the register 2 RESET bit to high.
: After the offset calibration is terminated, set registers 0, 1 and 3.
Do not change other register 2 settings. Offset calibration starts automatically.
Must be stable within the operating
power supply voltage range
(1) Register 2 setting
RESET = "Low"
2 ms or more
(RESET mode)
2 ms or more
(2) Register 2 setting
Offset calibration
(automatically starts
Ends after 40000 clock cycles
after RESET cancellation)
(RESET cancellation)
RESET = "High"
0 ms
or more
(3) Registers 0, 1
and 3 settings