Texas Instruments OMAP36 Series, Техническое справочное руководство

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Camera ISP Register Manual
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Bits Field Name Description Type Reset
15:8 COUNT Sets the number of frame to acquire. Once the frame RW 0x00
acquisition starts, the COUNT value is decremented after
every frame. When COUNT reaches 0, the
FRAME_NUMBER_IRQ interrupt is triggered and
CTX_EN is set to '0'.
Writes to this bit field are controlled by the
COUNT_UNLOCK bit. During the same Interconnect
write access , the bit-field COUNT_UNLOCK shall be
written in addition to COUNT bit-field in order to change
the COUNT value. COUNT can be overwritten
dynamically with a new count value."
0: Infinite number of frames (no count).
1: 1 frame to acquire
...
255: 255 frames to acquire.
7 EOF_EN Indicates if the end of frame signal shall be asserted at RW 0
the end of the line.
Read 0x0: The end of frame signal is not asserted at the
end of each frame.
Read 0x1: The end of frame signal is asserted at the end
of each frame.
6 EOL_EN Indicates if the end of line signal shall be asserted at the RW 0
end of the line.
Read 0x0: The end of line signal is not asserted at the
end of each frame.
Read 0x1: The end of line signal is asserted at the end of
each frame.
5 CS_EN Enables the checksum check for the received payload RW 0
(long packet only).
0x0: Disabled
0x1: Enabled
4 COUNT_UNLOCK Unlock writes to the COUNT bit field. W 0
Write 0x0: COUNT bit field is locked. Writes have no
effect
Write 0x1: COUNT bit field is unlocked. Writes are
possible.
3 PING_PONG Indicates whether the PING or PONG destination R 1
address (CSI2_CTX_DAT_PING_ADDR or
CSI2_CTX_DAT_PONG_ADDR) was used to write the
last frame.
This bit field toggles after every FEC_NUMBER FEC
sync code received for the current context.
Read 0x0: PING buffer
Read 0x1: PONG buffer
2 VP_FORCE Forces sending of the data to both VPORT and RW 0
Interconnect.
Only applies to formats that existing in 2 versions:
- one sending data to Interconnect port only
- one sending data to VPORTonly (tagged with the +VP
extension)
The format version sending data only to Interconnect
should be choosen.
0x0: Disabled
0x1: Enabled
1 LINE_MODULO Line modulo configuration RW 0
0x0: CSI2_CTX_CTRL3.LINE_NUMBER is used once
per frame for the generation of the LINE_NUMBER_IRQ.
0x1: CSI2_CTX_CTRL3.LINE_NUMBER is used as a
modulo number for the generation of the
LINE_NUMBER_IRQ (multiple times the interrupt can be
generated for each frame)
1542 Camera Image Signal Processor SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated