camisp-193
ccpv2_dy1
ccpv2_dy0
ccpv2_dx0
vdds_csiphy1/vdds_csiphy2
Packing
Video
port
CSI1/CCP2B receiver
ccpv2_dx1
F
I
F
O
To CRSBL
CSIPHY1 or CSIPHY2
DATA
CTRL
Extract
sync
Unpacking
From CRSBL
Unpacking
DPCM
decode
DPCM
encode
External
sensor
VP_HS
VP_VS
VP_DATA[11:0]
VP_PCLK
VPORT
SCM.CONTROL_CAMERA_PHY_CTRL
Public Version
Camera ISP Functional Description
www.ti.com
Figure 6-57. Camera ISP CSI1/CCP2B Receiver Block Diagram
6.4.2.2.2 Camera ISP CSI1/CCP2B Associated PHY
The CSI1/CCP2B receiver's selected PHY is controlled by 2 bits of the
register:
•
The
[2] IO_OUT_SEL bit selects the output mode of the PHY which must be set to 1 for
parallel.
CAUTION
[2] IO_OUT_SEL bit must be set to 1(parallel mode) after reset
and at normal work flow. If not set, it could cause ISP functional stall.
•
The
[10] INV bit selects the clock edge used to sample data:
–
If
[10] INV = 0x0, use the rising edge.
–
If
[10] INV = 0x1, use the falling edge.
The CSI1/CCP2B receiver associated configured PHY is controlled by a SCM registers:
SCM.CONTROL_CAMERA_PHY_CTRL
•
SCM.CONTROL_CAMERA_PHY_CTRL[4] CSI1_RX_sel:
–
CSIPHY1 data is sent to ISP CSI1/ CCP2B if set to 0
–
CSIPHY2 data is sent to ISP CSI1/ CCP2B if set to 1
For information about initializing the CSIPHY associated with CSI1/CCP2B, see
, Camera
ISP CSIPHY Initialization for Work With CSI1/CCP2B Receiver.
See
for further connectivity schema details.
6.4.2.2.3 Camera ISP CSI1/CCP2B Physical Layer
The CSI1/CCP2B serial interface is a unidirectional differential serial interface with two options for the
physical layer: data/clock or data/strobe signals. The physical layer of the CSI1/CCP2B is based on
SubLVDS signaling.
CCP2B defines three classes for data transfer between the transmitter and the receiver.
summarizes the CSI1/CCP2B classifications. Class 1 and class 2 do not apply to the MIPI
CSI1-compatible mode.
Table 6-22. Camera ISP CSI1/CCP2B Transmitter Classification
Class
Data Transfer Capacity
Signaling Method
Class 0 (CSI1/CCP2)
< 208 Mbps
Data/clock
Class 1 (CCP2 only)
208 Mbps to < 416 Mbps
Data/strobe
1160Camera Image Signal Processor
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated