Description of the data path
PIKE Technical Manual
V5.0.0
139
Brightness (black level or offset)
It is possible to set the black level in the camera within the following ranges:
0 ... +16 gray values (@ 8 bit)
Increments are in 1/16 LSB (@ 8 bit)
The IIDC register brightness at offset 800h is used for this purpose.
The following table shows the BRIGHTNESS register.
Note
•
Setting the gain does not change the offset (black
value).
Register
Name
Field
Bit
Description
0xF0F00800
BRIGHTNESS
Presence_Inq
[0]
Presence of this feature:
0: N/A
1: Available
Abs_Control
[1]
Absolute value control
O: Control with value in the value field
1: Control with value in the absolute
value CSR
If this bit= 1 the value in the value field
has to be ignored
---
[2..4]
Reserved
One_Push
[5]
Write: Set bit high to start
Read: Status of the feature:
Bit high: WIP
Bit low: Ready
ON_OFF
[6]
Write: ON or OFF this feature
Read: read a status
0: OFF
1: ON
A_M_MODE
[7]
Write: set mode
Read: read current mode
0: MANUAL
1: AUTO
---
[8..19]
Reserved
Value
[20..31]
Read/Write Value; this field is ignored
when writing the value in Auto or OFF
mode; if readout capability is not avail-
able reading this field has no meaning
Table 44: CSR:
Brightness
