HI anyone:
Our project need to pass the "hdmi compatible test" but some item fail.
Does anyone know about the hdmi CTS thing and give me a hand ?
Here is the project information:
1. hardware: imx6q
2. software: android4.4.2 kernel:3.0.14
fail items:
1, 7-29, fail only on VIC1 640x480p 60Hz, the lab advise to change the N and CTS value according to the table, but I don't know where to modify :
here is the log:
Test ID 7-29 : ACR
Verify N parameter value.
Found Audio Sample Packet
N Value = 0x1880
Pass
Verify CTS parameter value
Fs_actual = 39423.6005
CTS average = 31250.0000
Clock Accuracy (Bits 28,29) = [0x00]
Pass
Verify CTS transmitting interval
CTS interval = 0.00124292 Second
Error : Illegal CTS interval.
Test ID 7-29 : FAIL
fail 2: 7-13, C2 is too large on DUT OFF :
Hi jiangyaqiang
for supported HDMI timings one can refer to sect.33.4.3 Supported Video Mode
i.MX 6Dual/6Quad Applications Processor Reference Manual
and AN4671
Best regards
igor
HI igorpadykov:
Thanks.
I have checked the video mode, it supports.
And the "Eye pattern" test is pass.
The test fail in CTS (hdmi compatible test), the fail item is :ID 7-29
and it only fail at resolution 640x480.
Here is the log:
(I have checked the N and CTS value, it's setted according toassociation provided, maybe the root cause is not the N and CTS value
)
--
Test ID 7-29 : ACR
Verify N parameter value.
Found Audio Sample Packet
N Value = 0x1880
Pass
Verify CTS parameter value
Fs_actual = 39423.6005
CTS average = 31250.0000
Clock Accuracy (Bits 28,29) = [0x00]
Pass
Verify CTS transmitting interval
CTS interval = 0.00124292 Second
Error : Illegal CTS interval.
Test ID 7-29 : FAIL
Hi jiangyaqiang
for CTS tests may be suggested to proceed with extended support of
https://contact.nxp.com/new-prof-svcs-sw-tech
Best regards
igor
HI :
But the "Professional Engineering Services" need to pay.
We don't want to pay for such an issue, the evk board should have did the test, could you contact your
internal engeer, who have ever handle the CTS ?
Hi jiangyaqiang
unfortunately there are no other standard ways for CTS tests support.
Suggest to apply to local marketing office to check if it is possible to help with other options.
Best regards
igor