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DS90UB948-Q1: PATTERN

Part Number: DS90UB948-Q1

Hi expert,

my customer do the display project, they use DS90UB948, they want to test the pattern, but the display is black screen.

could you help review the customer's config:

0x0F

0x1E

0x10

0x03

0x11

0x43

0x12

0x05

0x65

0x01

0x64

0x01

0x65

0x03

 

0x64

0x11

0x66

0x07  

0x67

0x00  

0x66

0x08

0x67

0x85

0x66

0x09

0x67

0x2f

0x66

0x04

0x67

0x40

0x66

0x05

0x67

0xc5

0x66

0x06

0x67

0x2f

0x66

0x0c  

0x67

0x30

0x66

0x0D

0x67

0x24

0x66

0x0A  

0x67

0x1E

0x66

0x0B  

0x67

0x02

0x66

0x0E

0x67

0x00

0x65

0x0c  

0x64

0x05

  • Colt,

    First of all, what are these settings for? They don't seem to be PATGEN related and I'm even wondering if these are 948 settings or settings for a serializer device??

    0x0F

    0x1E

    0x10

    0x03

    0x11

    0x43

    0x12

    0x05

    948 can't generate timing which falls within this spec directly. You would need to use a serializer PATGEN paired with 948 to generate timing within this spec. The closest timing you could generate to this spec directly from the 948 would be a PCLK rate of ~70MHz. The below settings would set ~70MHz PCLK with the nominal video timings:

    0x66

    0x03

    0x67

    0x02  

    0x66

    0x04

    0x67

    0x40

    0x66

    0x05

    0x67

    0xC5

    0x66

    0x06

    0x67

    0x2F

    0x66

    0x07

    0x67

    0x00

    0x66

    0x08

    0x67

    0x05

    0x66

    0x09  

    0x67

    0x2D

    0x66

    0x0A

    0x67

    0x1E

    0x66

    0x0B  

    0x67

    0x02

    0x66

    0x0C

    0x67

    0x12

    0x66

    0x0D

    0x67

    0x06

    0x66

    0x0E

    0x67

    0x00

    0x65

    0x04  

    0x64

    0x05

    Keep in mind those are settings for the 948 PATGEN. If you are trying to generate PATGEN from a SER device attached to 948, then you will need different settings. 

    Best Regards,

    Casey