DS90UB948-Q1: PATTERN

Colt Zhang

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

over 1 year ago

+1 Casey McCrea over 1 year ago

TI__Guru** 103215 points

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

Interface

Interface forum

DS90UB948-Q1: PATTERN