FRAME_BUFFER_WIDTH
FRAME_BUFFER_WIDTH
@line0
@line0
@line1
@line1
@line2
@line2
@line3
Pixel Data
Pixel Data
IMAGE_WIDTH
IMAGE_WIDTH
CSI2_CTX_DAT_PING_ADDR
CSI2_CTX_DAT_PING_ADDR
CSI2_CTX_DAT_OFST
CSI2_CTX_DAT_OFST
CSI2_CTX_DAT_OFST
CSI2_CTX_DAT _OFST
Frame buffer
Frame buffer
Progressive frame
(
FEC_NUMBER = 1)
Interlaced frame
(
FEC_NUMBER = 2)
Frame n
Frame n+1
camisp-250
camisp-251
Control
Data[32]
CSI2 receiver
CSIPHY
Public Version
www.ti.com
Camera ISP Functional Description
Figure 6-71. Camera ISP CSI2 Pixel Data Destination Setting in Progressive and Interlaced Mode
6.4.3.9
Camera ISP CSI2 PHYs
The two PHYs in the device act as the interface between the transmitter (camera sensor) and the
receivers inside the camera ISP. The modules transform the bit stream divided into one or two serial data
lanes into a bit stream compatible with the CSI2 receiver and one clock lane. The two CSIPHY1 and
CSIPHY2 have identical functionality, only difference is that CSIPHY1 is limited to one data line.
shows the CSIPHY overview diagram.
Figure 6-72. Camera ISP CSI2 PHY Overview
The
register logs the CSIPHY event. The events that occur are:
•
Line power state change (all lanes in ULPM, at least one lane exits ULPM, etc.)
•
Error on one lane
NOTE:
For information about initializing the CSIPHY associated with CSI2, see
Camera ISP CSIPHY Initialization for Work With CSI2 Receiver.
Both CSI2A and CSI2C receivers embed a registers to configure/read some PHY parameters:
•
The
register reports completion of reset on the different parts of the module
and configures timing parameters.
1185
SWPU177N – December 2009 – Revised November 2010
Camera Image Signal Processor
Copyright © 2009–2010, Texas Instruments Incorporated