Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
We are using the camera port in parallel sync mode with 8-bit YCbCr data and are trying to increase the speed. So far we can only achieve a 75MHz input rate. At 75MHz we have good data and no dropped frames. When we increase the speed to 80MHz we get no data at all. The technical reference manual (SPRUGN4D) refers to the pixel clock rate in multiple places. The overview states 75MHz but the device features section has a table that states up to 150MHz for 8-bit mode. We would like to run the port at up to 100MHz in 8-bit mode if possible.
What is the upper limit on the camera port’s pixel clock frequency in this mode, and what settings are required in order to achieve it?
Some references to the interface rate from the TRM are attached below.
Thank you
1.3.6
Camera interface
– Supports most of the raw image sensors available in the market
– Includes video processing hardware
– 12-bit parallel interface supported
– Pixel clock up to 75 MHz
Table 1-3
Parallel Input Mode 12 bit input @ 75MHz
8 bit input @ 150MHz
Table 6-62
8bit YCC Input < 90 MHz ISP_CTRL [3:2] PAR_BRIDGE = 0x0 CCDC_CFG[11]
CCDC_SYN_MODE [13:12] INPMOD == 2
&&
CCDC_REC656IF[0] R656ON = 0x0
8bit YCC Input < 148.5 MHz ISP_CTRL[3:2] PAR_BRIDGE = 0x1 ||
ISP_CTRL[3:2] PAR_BRIDGE = 0x2