Public Version
www.ti.com
Camera ISP Basic Programming Model
During frame capture, the COUNT bit field is decremented by 1 at each frame capture. The software reads
the COUNT bit field to know how many frames still must be captured.
The COUNT bit can be updated during capture if the COUNT_UNLOCK is set to 1.
6.5.4.6
Camera ISP CSI2 Configure a Periodic Event During Frame Acquisition
The CSI2 receiver can generate a periodic event. This line number is defined in the
[15:0] LINE_NUMBER bit field. The event can be generated once or multiple times per
frame, depending on the
[1] LINE_MODULO bit value:
•
If the LINE_MODULO bit = 0, the event is generated when the line number corresponding to the
LINE_NUMBER bit field is received.
•
If the LINE_MODULO bit = 1, the event is generated when the line number received corresponds to a
multiple of the LINE_NUMBER value (LINE_NUMBER is used as a modulo).
6.5.4.7
Camera ISP CSI2 Linking a Context to a Virtual Channel and a Data Type
The CSI2 receiver supports eight contexts and the CSI2 protocol defines four virtual channels. Therefore,
a CSI2 receiver context can be associated with a virtual channel and a data type. Virtual channels are
defined by a 2-bit field. Valid data types for the CSI2 receiver with their associated values are described in
.
Table 6-60. Camera ISP CSI2 Receiver-Supported Data Types
Value
Data Type
0x0
Others
0x12
Embedded 8-bit nonimage data
0x18
YUV420 8-bit
0x19
YUV420 10-bit
0x1A
YUV420 8-bit legacy
0x1C
YUV420 8-bit + CSPS
0x1D
YUV420 10-bit + CSPS
0x1E
YUV422 8-bit
0x1F
YUV422 10-bit
0x22
RGB565
0x24
RGB888
0x28
RAW6
0x29
RWA7
0x2A
RAW8
0x2B
RAW10
0x2C
RAW12
0x2D
RAW14
0x33
EXP32_24
0x40
USER_DEFINED_8_BIT_DATA_TYPE_1
0x41
USER_DEFINED_8_BIT_DATA_TYPE_2
0x42
USER_DEFINED_8_BIT_DATA_TYPE_3
0x43
USER_DEFINED_8_BIT_DATA_TYPE_4
0x44
USER_DEFINED_8_BIT_DATA_TYPE_5
0x45
USER_DEFINED_8_BIT_DATA_TYPE_6
0x46
USER_DEFINED_8_BIT_DATA_TYPE_7
0x47
USER_DEFINED_8_BIT_DATA_TYPE_8
0x68
RAW6 + EXP8
0x69
RAW7 + EXP8
0x80
USER_DEFINED_8_BIT_DATA_ EXP8
1259
SWPU177N – December 2009 – Revised November 2010
Camera Image Signal Processor
Copyright © 2009–2010, Texas Instruments Incorporated