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DS90UB960-Q1: DS90UB960 data output is no signal

Dexter Choi
Expert 2795 points
Part Number: DS90UB960-Q1


Dear Sir,

We are using DS90UB960(1) + DS90UB953(4).

we are successfully I2C with DES+SER as below register. 

Video format is as below

MIPI of 2Lane(csi)
YUV-422 format.
Resolution FHD (1080P).

DD90UB960 output is no signal.

can you check below register what is problem.

DES(DS90UB960) configration

DES i2c addr -> 0x30(7bit)

 #print "CSI_PORT_SEL"

sudo /usr/sbin/i2cset -y 2  0x30 0x32  0x01

 #print "CSI_PLL_CTL"

sudo /usr/sbin/i2cset -y 2  0x30 0x1f  0x02

 #print "CSI_EN" (MIPI 2LANE)

sudo /usr/sbin/i2cset -y 2  0x30 0x33  0x21

 #print "FWD_PORT"

sudo /usr/sbin/i2cset -y 2  0x30 0x20 0xe0

----------------------------------------------------

SES(DS90UB953) configration

SER i2c addr -> 0x0c(7bit)

 sudo /usr/sbin/i2cset -y 2  0x0c 0x02 0x13

-----------------------------------------------------

2133.TI_DS90UB953QRHBQ1회로.pdf

7823.TI_DS90UB960WRTDRQ1-1.pdf


 

  • 0
    TI__Genius 11340 points

    Hi Dexter,

    Are you able to read serializer I2C addresses? If not, did you set your aliases?

    - Des reg 0x4C: Select the right RX port to write

    - Reg 0x5B SER DEVICE ID: Set the real serializer I2C address. This is typically loaded already

    - Reg 0x5C SER_ALIAS_ID: Set the alias serializer I2C address

    If serializer I2C can be read/written. Can you check registers 0x61 - 0x63 on your serializer? If the values are 0x00, there's no incoming CSI data. If you can see CSI data from the serializer, can you read registers 0x7A - 0x7B (CSI errors) and 0x73 - 0x76 (Resolution) on the deserializer?

    Best,

    Jiashow

  • 0 in reply to Jiashow Ho
    Expert 2795 points

    Dear Jiashow,

    Thank you for your prompt support.

    I found the problem of this issue that increase Voltage level of  POC.

    Thanks.