DS90UB960-Q1: DS90UB935 as Serializer，data acceptance is not normal

Renf Shi

the 935 mode is Non-Synchronous CLK_IN Mode， sensor connect with 935 si csi-2, data type is yuv422 8 bit ,1920*1280

The following is the 935+960 register configuration

//DS90UB960-Q1
0x01, 0x03  // reset
0x1f, 0x02  // csi 800M
0x32, 0x01  // csi port1 config enable
0x33, 0x02  // 4 lane enable csi for csi port0
0x4c, 0x01  // rx port0
0x58, 0x5A  // pass thou bc 10M
0x5C, 0x38  // 953 alias addr 0x1c
0x5D, 0x60  // sensor slave addr
0x65, 0x80  // sensor alias addr  0x40

0x7c, 0xc0  // csi mode
0x70, 0x1e
0x6d, 0x7c
0x6e, 0xAA
0x72, 0x00
0x7d, 0x01  // set pass_threshold=1
0x20, 0x00


//DS90UB935
0x01, 0x03  // digital reset 0/1.
0x02, 0x33  // 4-lane, Continuous Clock, gen crc, i2c 1.8v.
0x03, 0x12  // CSI-2 Non-synchronous 
0x32, 0x49  // i2c pass-through, parity check.
0x06, 0x6a 
0x07, 0xf2

But the data I received on the 960 works like this

What causes this situation? How to modify. thanks for your help

over 3 years ago

0 Hamzeh Jaradat over 3 years ago

TI__Guru** 114400 points

Hello ???

Are you using just one camera or more?

What is the CLK frequency connected to the SER?

Can you provide the following register values (for DES RX Port0): 0x35, 0x4C-0x4E, 0x73-0x76

0 Renf Shi over 3 years ago in reply to Hamzeh Jaradat

Expert 1080 points

0x35 is 0x01

0x4c is 0x01

0x4d is 0x03

0x4e is 0xED

0x73 is 0x04

0x74 is 0x38

0x75 is 0x0f

0x76 is 0x00

I've changed the tool as lit, but only the small left part is normal

0 Renf Shi over 3 years ago in reply to Hamzeh Jaradat

Expert 1080 points

CLK frequency connected to the SER is 25 MHz

0 Renf Shi over 3 years ago in reply to Hamzeh Jaradat

Expert 1080 points

I installed the Code Example for Pattern Generator of the 935 and output the following screen, I don't know if it is normal

0 Hamzeh Jaradat over 3 years ago in reply to Renf Shi

TI__Guru** 114400 points

Hello ???,

From the reg values you provided it looks like the received image is not stable.
reg 0x4E = 0xED means line length was detected as unstable during a previous video frame. The line length is considered to be stable if all the lines in the video frame have the same length.
Also there are FPD3 Encoder Errors and CSI errors on the received data.
Additionally the the received Line count per frame is not stable.

Line count = 0438 Hex = 1080 DEC
Line length = 0f00 Hex = 3840 DEC
Which means the Imager resolution is 1920x1080 not as you expected 1920x1280. Please double check your Image sensors settings!

0 Renf Shi over 3 years ago in reply to Hamzeh Jaradat

Expert 1080 points

I'm sorry. I said the wrong resolution. It should be 1920x1080 instead of 1920x1280. In addition, how to solve FPD3 encoder errors and CSI errors? Thank you

0 Hamzeh Jaradat over 3 years ago in reply to Renf Shi

TI__Guru** 114400 points

Hello,

FPD3 encoder errors are forward channel errors happens due to for example some external noise or bad quality link.

CSI errors are reported because as I said above, line length and line count are not stable. Please double check your image sensor settings.

0 Renf Shi over 3 years ago in reply to Hamzeh Jaradat

Expert 1080 points

I have verified the sensor part with max96717+max9296, there is no problem with the sensor part, at present, we have removed the crystal oscillator of 935, the plot situation is stuttering, and the values read by 954 are as follows

0x35 = 0x00
0x4c = 0x01
0x4d = 0x3b

0x4e = 0xfd
0x73 = 0x01
0x74 = 0xb3
0x75 = 0x0f
0x76 = 0x00

0 Hamzeh Jaradat over 3 years ago in reply to Renf Shi

TI__Guru** 114400 points

Renf Shi said:
0x35 = 0x00

This is indicating no valid data at the 954 output.

Renf Shi said:
0x4d = 0x3b

Renf Shi said:
0x4e = 0xfd

You have CRC errors, LOCK status changed, Sequence error and different types of CSI errors, which means your link does not transfer a good signal.

Renf Shi said:
0x73 = 0x01
0x74 = 0xb3
0x75 = 0x0f
0x76 = 0x00

Line count = 01B3 Hex = 435 DEC
Line length = 0F00 Hex = 3840 DEC
Which means the Imager resolution is 435x1080 which does not look correct.

0 Renf Shi over 3 years ago in reply to Hamzeh Jaradat

Expert 1080 points

My sensor is using its own crystal, so I want to use Non-Synchronous AON Mode on ti935, so this is why this happens, I don't quite understand what exactly is causing this? Whether the hardware or registers are not configured

0 Hamzeh Jaradat over 3 years ago in reply to Renf Shi

TI__Guru** 114400 points

Are you changing this setup using registers or using hardware, i.e. strapping ?

Can you provide register dump from both SER and DES?

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DS90UB960-Q1: DS90UB935 as Serializer，data acceptance is not normal