DS90UB954-Q1EVM: Issue with achieving the desired FPS in DS90UB953/DS90UB954.

Hello Rathna,

Are you using 1 or 2 Cameras connected to the 954?

How is the SER configured? Which Mode? How many lanes?

What is the frequency of the REFCLK on the SER and on the DES?

When you say:

Anonymous said:

we have encountered difficulties achieving the desired 60 fps streaming

What difficulties did you encounter?

Are you seeing errors?

Hi Hamzeh,
     
1, we are connected only one camera to the 954.
2, it's four lane and continuous clock, for your reference I will attach both 30fps (streaming) and 60fps (not streaming) serializer and deserializer dump below.
3, it's 25 Mhz.
4, We are not receiving any buffers. 
5, yes, we are receiving length and checksum error.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
30 fps:

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>Deser(954):

reg 0x0 val = 0x6000

reg 0x1 val = 0x0

reg 0x2 val = 0x2e00

reg 0x3 val = 0x2000

reg 0x4 val = 0xdf00

reg 0x5 val = 0x100

reg 0x6 val = 0x0

reg 0x7 val = 0xfe00

reg 0x8 val = 0x1c00

reg 0x9 val = 0x1000

reg 0xa val = 0x1300

reg 0xb val = 0x2500

reg 0xc val = 0x8100

reg 0xd val = 0x900

reg 0xe val = 0x800

reg 0xf val = 0x7f00

reg 0x10 val = 0x0

reg 0x11 val = 0x0

reg 0x12 val = 0x0

reg 0x13 val = 0x0

reg 0x14 val = 0x0

reg 0x15 val = 0x0

reg 0x16 val = 0x0

reg 0x17 val = 0x0

reg 0x18 val = 0x0

reg 0x19 val = 0x0

reg 0x1a val = 0x0

reg 0x1b val = 0x0

reg 0x1c val = 0x0

reg 0x1d val = 0x0

reg 0x1e val = 0x400

reg 0x1f val = 0x200

reg 0x20 val = 0x2000

reg 0x21 val = 0x4400

reg 0x22 val = 0x100

reg 0x23 val = 0x0

reg 0x24 val = 0x0

reg 0x25 val = 0x0

reg 0x26 val = 0x0

reg 0x27 val = 0x0

reg 0x28 val = 0x0

reg 0x29 val = 0x0

reg 0x2a val = 0x0

reg 0x2b val = 0x0

reg 0x2c val = 0x0

reg 0x2d val = 0x0

reg 0x2e val = 0x0

reg 0x2f val = 0x0

reg 0x30 val = 0x0

reg 0x31 val = 0x0

reg 0x32 val = 0x0

reg 0x33 val = 0x100

reg 0x34 val = 0x4000

reg 0x35 val = 0x300

reg 0x36 val = 0x0

reg 0x37 val = 0x0

reg 0x38 val = 0x0

reg 0x39 val = 0x0

reg 0x3a val = 0x0

reg 0x3b val = 0x100

reg 0x3c val = 0x1400

reg 0x3d val = 0x6f00

reg 0x3e val = 0x0

reg 0x3f val = 0x4000

reg 0x40 val = 0x0

reg 0x41 val = 0xa700

reg 0x42 val = 0x7100

reg 0x43 val = 0x100

reg 0x44 val = 0x0

reg 0x45 val = 0x0

reg 0x46 val = 0x0

reg 0x47 val = 0x0

reg 0x48 val = 0x0

reg 0x49 val = 0x0

reg 0x4a val = 0x1000

reg 0x4b val = 0x1200

reg 0x4c val = 0x100

reg 0x4d val = 0x300

reg 0x4e val = 0x400

reg 0x4f val = 0x6400

reg 0x50 val = 0x0

reg 0x51 val = 0x0

reg 0x52 val = 0x0

reg 0x53 val = 0x300

reg 0x54 val = 0x0

reg 0x55 val = 0x0

reg 0x56 val = 0x0

reg 0x57 val = 0x0

reg 0x58 val = 0x9e00

reg 0x59 val = 0x400

reg 0x5a val = 0x0

reg 0x5b val = 0x3000

reg 0x5c val = 0x1800

reg 0x5d val = sensor id

reg 0x5e val = 0x0

reg 0x5f val = 0x0

reg 0x60 val = 0x0

reg 0x61 val = 0x0

reg 0x62 val = 0x0

reg 0x63 val = 0x0

reg 0x64 val = 0x0

reg 0x65 val = sensoralias

reg 0x66 val = 0x0

reg 0x67 val = 0x0

reg 0x68 val = 0x0

reg 0x69 val = 0x0

reg 0x6a val = 0x0

reg 0x6b val = 0x0

reg 0x6c val = 0x0

reg 0x6d val = 0xb400

reg 0x6e val = 0x8800

reg 0x6f val = 0x8800

reg 0x70 val = 0x1e00

reg 0x71 val = 0x1e00

reg 0x72 val = 0x400

reg 0x73 val = 0x200

reg 0x74 val = 0xd000

reg 0x75 val = 0xa00

reg 0x76 val = 0x0

reg 0x77 val = 0xc500

reg 0x78 val = 0x0

reg 0x79 val = 0x100

reg 0x7a val = 0x0

reg 0x7b val = 0x0

reg 0x7c val = 0x2000

reg 0x7d val = 0x0

reg 0x7e val = 0x0

reg 0x7f val = 0x0

reg 0xa0 val = 0x200

reg 0xa1 val = 0xf00

reg 0xa2 val = 0x0

reg 0xa3 val = 0x0

reg 0xa4 val = 0x800

reg 0xa5 val = 0x1900

reg 0xa6 val = 0x0

reg 0xa7 val = 0x0

reg 0xa8 val = 0x0

reg 0xa9 val = 0x0

reg 0xaa val = 0x0

reg 0xab val = 0x0

reg 0xac val = 0x0

reg 0xad val = 0x0

reg 0xae val = 0x0

reg 0xaf val = 0x0

reg 0xb0 val = 0x400

reg 0xb1 val = 0x1400

reg 0xb2 val = 0x3f00

reg 0xb3 val = 0x800

reg 0xb4 val = 0x2500

reg 0xb5 val = 0x0

reg 0xb6 val = 0x1800

reg 0xb7 val = 0x0

reg 0xb8 val = 0x8c00

reg 0xb9 val = 0x3300

reg 0xba val = 0x8000

reg 0xbb val = 0x7400

reg 0xbc val = 0x8000

reg 0xbd val = 0x0

reg 0xbe val = 0x0

reg 0xbf val = 0x0

reg 0xd0 val = 0x0

reg 0xd1 val = 0x4300

reg 0xd2 val = 0x9400

reg 0xd3 val = 0x300

reg 0xd4 val = 0x6000

reg 0xd5 val = 0xf200

reg 0xd6 val = 0x0

reg 0xd7 val = 0x0

reg 0xd8 val = 0x0

reg 0xd9 val = 0x0

reg 0xda val = 0x0

reg 0xdb val = 0x0

reg 0xdc val = 0x0

reg 0xdd val = 0x0

reg 0xde val = 0x0

reg 0xdf val = 0x0

reg 0xf0 val = 0x5f00

reg 0xf1 val = 0x5500

reg 0xf2 val = 0x4200

reg 0xf3 val = 0x3900

reg 0xf4 val = 0x3500

reg 0xf5 val = 0x3400

reg 0xf6 val = 0x0

reg 0xf7 val = 0x0

reg 0xf8 val = 0x0

reg 0xf9 val = 0x0

reg 0xfa val = 0x0

reg 0xfb val = 0x0

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>Serializer(953)

reg 0x0 val = 0x3000

reg 0x1 val = 0x0

reg 0x2 val = 0x7300

reg 0x3 val = 0x4800

reg 0x4 val = 0x0

reg 0x5 val = 0x300

reg 0x6 val = 0x4100

reg 0x7 val = 0x2800

reg 0x8 val = 0xfe00

reg 0x9 val = 0x1e00

reg 0xa val = 0x1000

reg 0xb val = 0x7f00

reg 0xc val = 0x7f00

reg 0xd val = 0xf000

reg 0xe val = 0xf00

reg 0xf val = 0x0

reg 0x10 val = 0x0

reg 0x11 val = 0x0

reg 0x12 val = 0x0

reg 0x13 val = 0x0

reg 0x14 val = 0x0

reg 0x15 val = 0x2000

reg 0x16 val = 0x1800

reg 0x17 val = 0x3c00

reg 0x18 val = 0x8000

reg 0x19 val = 0x6200

reg 0x1a val = 0x6200

reg 0x1b val = 0x6200

reg 0x1c val = 0x0

reg 0x1d val = 0x0

reg 0x1e val = 0x0

reg 0x20 val = 0x0

reg 0x21 val = 0x0

reg 0x22 val = 0x0

reg 0x23 val = 0x0

reg 0x24 val = 0x0

reg 0x31 val = 0x2000

reg 0x32 val = 0x900

reg 0x33 val = 0x400

reg 0x34 val = 0x0

reg 0x35 val = 0x1000

reg 0x36 val = 0x800

reg 0x37 val = 0x6000

reg 0x38 val = 0x0

reg 0x39 val = 0x0

reg 0x3a val = 0x0

reg 0x3b val = 0x0

reg 0x3c val = 0x0

reg 0x3d val = 0x0

reg 0x3e val = 0x0

reg 0x3f val = 0x0

reg 0x40 val = 0x0

reg 0x41 val = 0x0

reg 0x42 val = 0x0

reg 0x43 val = 0x0

reg 0x44 val = 0x0

reg 0x45 val = 0x0

reg 0x46 val = 0x0

reg 0x47 val = 0x0

reg 0x48 val = 0x0

reg 0x49 val = 0x0

reg 0x50 val = 0x2000

reg 0x51 val = 0xc000

reg 0x52 val = 0x4500

reg 0x53 val = 0x0

reg 0x54 val = 0x0

reg 0x55 val = 0x0

reg 0x56 val = 0x0

reg 0x57 val = 0x0

reg 0x58 val = 0x700

reg 0x59 val = 0x700

reg 0x5a val = 0x700

reg 0x5b val = 0x0

reg 0x5c val = 0x0

reg 0x5d val = 0x0

reg 0x5e val = 0x0

reg 0x5f val = 0x0

reg 0x60 val = 0x0

reg 0x61 val = 0x1e00

reg 0x62 val = 0x0

reg 0x63 val = 0xa00

reg 0x64 val = 0x1100

reg 0xb0 val = 0x400

reg 0xb1 val = 0x4a00

reg 0xb2 val = 0x3f00

reg 0xf0 val = 0x5f00

reg 0xf1 val = 0x5500

reg 0xf2 val = 0x4200

reg 0xf3 val = 0x3900

reg 0xf4 val = 0x3500

reg 0xf5 val = 0x3300

reg 0xf6 val = 0x0

reg 0xf7 val = 0x0

reg 0xf8 val = 0x0

reg 0xf9 val = 0x0

reg 0xfa val = 0x0

reg 0xfb val = 0x0

reg 0xfc val = 0x0

reg 0xfd val = 0x0

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

60 FPS

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>.Deser(954)

reg 0x0 val = 0x6000
reg 0x1 val = 0x0
reg 0x2 val = 0x2e00
reg 0x3 val = 0x2000
reg 0x4 val = 0xdf00
reg 0x5 val = 0x100
reg 0x6 val = 0x0
reg 0x7 val = 0xfe00
reg 0x8 val = 0x1c00
reg 0x9 val = 0x1000
reg 0xa val = 0x1300
reg 0xb val = 0x2500
reg 0xc val = 0x8100
reg 0xd val = 0x900
reg 0xe val = 0x800
reg 0xf val = 0x7f00
reg 0x10 val = 0x0
reg 0x11 val = 0x0
reg 0x12 val = 0x0
reg 0x13 val = 0x0
reg 0x14 val = 0x0
reg 0x15 val = 0x0
reg 0x16 val = 0x0
reg 0x17 val = 0x0
reg 0x18 val = 0x0
reg 0x19 val = 0x0
reg 0x1a val = 0x0
reg 0x1b val = 0x0
reg 0x1c val = 0x0
reg 0x1d val = 0x0
reg 0x1e val = 0x400
reg 0x1f val = 0x200
reg 0x20 val = 0x2000
reg 0x21 val = 0x4400
reg 0x22 val = 0x100
reg 0x23 val = 0x0
reg 0x24 val = 0x0
reg 0x25 val = 0x0
reg 0x26 val = 0x0
reg 0x27 val = 0x0
reg 0x28 val = 0x0
reg 0x29 val = 0x0
reg 0x2a val = 0x0
reg 0x2b val = 0x0
reg 0x2c val = 0x0
reg 0x2d val = 0x0
reg 0x2e val = 0x0
reg 0x2f val = 0x0
reg 0x30 val = 0x0
reg 0x31 val = 0x0
reg 0x32 val = 0x0
reg 0x33 val = 0x100
reg 0x34 val = 0x4000
reg 0x35 val = 0x300
reg 0x36 val = 0x0
reg 0x37 val = 0x0
reg 0x38 val = 0x0
reg 0x39 val = 0x0
reg 0x3a val = 0x0
reg 0x3b val = 0x100
reg 0x3c val = 0x1400
reg 0x3d val = 0x6f00
reg 0x3e val = 0x0
reg 0x3f val = 0x4000
reg 0x40 val = 0x0
reg 0x41 val = 0xa700
reg 0x42 val = 0x7100
reg 0x43 val = 0x100
reg 0x44 val = 0x0
reg 0x45 val = 0x0
reg 0x46 val = 0x0
reg 0x47 val = 0x0
reg 0x48 val = 0x0
reg 0x49 val = 0x0
reg 0x4a val = 0x1000
reg 0x4b val = 0x1200
reg 0x4c val = 0x100
reg 0x4d val = 0x300
reg 0x4e val = 0xc00
reg 0x4f val = 0x6400
reg 0x50 val = 0x0
reg 0x51 val = 0x0
reg 0x52 val = 0x0
reg 0x53 val = 0x300
reg 0x54 val = 0x0
reg 0x55 val = 0x0
reg 0x56 val = 0x0
reg 0x57 val = 0x0
reg 0x58 val = 0x9e00
reg 0x59 val = 0x400
reg 0x5a val = 0x0
reg 0x5b val = 0x3000
reg 0x5c val = 0x1800
reg 0x5d val = sensor id
reg 0x5e val = 0x0
reg 0x5f val = 0x0
reg 0x60 val = 0x0
reg 0x61 val = 0x0
reg 0x62 val = 0x0
reg 0x63 val = 0x0
reg 0x64 val = 0x0
reg 0x65 val = sensor alias
reg 0x66 val = 0x0
reg 0x67 val = 0x0
reg 0x68 val = 0x0
reg 0x69 val = 0x0
reg 0x6a val = 0x0
reg 0x6b val = 0x0
reg 0x6c val = 0x0
reg 0x6d val = 0xb400
reg 0x6e val = 0x8800
reg 0x6f val = 0x8800
reg 0x70 val = 0x1e00
reg 0x71 val = 0x1e00
reg 0x72 val = 0x400
reg 0x73 val = 0x200
reg 0x74 val = 0xd000
reg 0x75 val = 0xa00
reg 0x76 val = 0x0
reg 0x77 val = 0xc500
reg 0x78 val = 0x0
reg 0x79 val = 0x100
reg 0x7a val = 0xc00
reg 0x7b val = 0x800
reg 0x7c val = 0x2000
reg 0x7d val = 0x0
reg 0x7e val = 0x0
reg 0x7f val = 0x0
reg 0xa0 val = 0x200
reg 0xa1 val = 0xf00
reg 0xa2 val = 0x0
reg 0xa3 val = 0x0
reg 0xa4 val = 0x800
reg 0xa5 val = 0x1900
reg 0xa6 val = 0x0
reg 0xa7 val = 0x0
reg 0xa8 val = 0x0
reg 0xa9 val = 0x0
reg 0xaa val = 0x0
reg 0xab val = 0x0
reg 0xac val = 0x0
reg 0xad val = 0x0
reg 0xae val = 0x0
reg 0xaf val = 0x0
reg 0xb0 val = 0x400
reg 0xb1 val = 0x1400
reg 0xb2 val = 0x3f00
reg 0xb3 val = 0x800
reg 0xb4 val = 0x2500
reg 0xb5 val = 0x0
reg 0xb6 val = 0x1800
reg 0xb7 val = 0x0
reg 0xb8 val = 0x8c00
reg 0xb9 val = 0x3300
reg 0xba val = 0x8000
reg 0xbb val = 0x7400
reg 0xbc val = 0x8000
reg 0xbd val = 0x0
reg 0xbe val = 0x0
reg 0xbf val = 0x0
reg 0xd0 val = 0x0
reg 0xd1 val = 0x4300
reg 0xd2 val = 0x9400
reg 0xd3 val = 0x300
reg 0xd4 val = 0x6000
reg 0xd5 val = 0xf200
reg 0xd6 val = 0x0
reg 0xd7 val = 0x0
reg 0xd8 val = 0x0
reg 0xd9 val = 0x0
reg 0xda val = 0x0
reg 0xdb val = 0x6800
reg 0xdc val = 0x0
reg 0xdd val = 0x0
reg 0xde val = 0x0
reg 0xdf val = 0x0
reg 0xf0 val = 0x5f00
reg 0xf1 val = 0x5500
reg 0xf2 val = 0x4200
reg 0xf3 val = 0x3900
reg 0xf4 val = 0x3500
reg 0xf5 val = 0x3400
reg 0xf6 val = 0x0
reg 0xf7 val = 0x0
reg 0xf8 val = 0x0
reg 0xf9 val = 0x0
reg 0xfa val = 0x0
reg 0xfb val = 0x0

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>Serializer(953)

reg 0x0 val = 0x3000
reg 0x1 val = 0x0
reg 0x2 val = 0x7300
reg 0x3 val = 0x4800
reg 0x4 val = 0x0
reg 0x5 val = 0x300
reg 0x6 val = 0x4100
reg 0x7 val = 0x2800
reg 0x8 val = 0xfe00
reg 0x9 val = 0x1e00
reg 0xa val = 0x1000
reg 0xb val = 0x7f00
reg 0xc val = 0x7f00
reg 0xd val = 0xf000
reg 0xe val = 0xf00
reg 0xf val = 0x0
reg 0x10 val = 0x0
reg 0x11 val = 0x0
reg 0x12 val = 0x0
reg 0x13 val = 0x0
reg 0x14 val = 0x0
reg 0x15 val = 0x2000
reg 0x16 val = 0x1800
reg 0x17 val = 0x3c00
reg 0x18 val = 0x8000
reg 0x19 val = 0x6200
reg 0x1a val = 0x6200
reg 0x1b val = 0x6200
reg 0x1c val = 0x0
reg 0x1d val = 0x0
reg 0x1e val = 0x0
reg 0x20 val = 0x0
reg 0x21 val = 0x0
reg 0x22 val = 0x0
reg 0x23 val = 0x0
reg 0x24 val = 0x0
reg 0x25 val = 0x200
reg 0x26 val = 0x0
reg 0x27 val = 0x0
reg 0x28 val = 0x6700
reg 0x29 val = 0x3300
reg 0x2a val = 0x100
reg 0x2b val = 0x0
reg 0x2c val = 0x0
reg 0x2d val = 0x0
reg 0x2e val = 0x0
reg 0x2f val = 0x0
reg 0x30 val = 0x0
reg 0x31 val = 0x2000
reg 0x32 val = 0x900
reg 0x33 val = 0x400
reg 0x34 val = 0x0
reg 0x35 val = 0x1000
reg 0x36 val = 0x800
reg 0x37 val = 0x6000
reg 0x38 val = 0x0
reg 0x39 val = 0x0
reg 0x3a val = 0x0
reg 0x3b val = 0x0
reg 0x3c val = 0x0
reg 0x3d val = 0x0
reg 0x3e val = 0x0
reg 0x3f val = 0x0
reg 0x40 val = 0x0
reg 0x41 val = 0x0
reg 0x42 val = 0x0
reg 0x43 val = 0x0
reg 0x44 val = 0x0
reg 0x45 val = 0x0
reg 0x46 val = 0x0
reg 0x47 val = 0x0
reg 0x48 val = 0x0
reg 0x49 val = 0x0
reg 0x4a val = 0x0
reg 0x4b val = 0x0
reg 0x4c val = 0x0
reg 0x4d val = 0x0
reg 0x4e val = 0x0
reg 0x4f val = 0x0
reg 0x50 val = 0x2000
reg 0x51 val = 0xc000
reg 0x52 val = 0x4500
reg 0x53 val = 0x0
reg 0x54 val = 0x0
reg 0x55 val = 0x0
reg 0x56 val = 0x0
reg 0x57 val = 0x0
reg 0x58 val = 0x700
reg 0x59 val = 0x700
reg 0x5a val = 0x700
reg 0x5b val = 0x0
reg 0x5c val = 0x0
reg 0x5d val = 0x0
reg 0x5e val = 0x0
reg 0x5f val = 0x0
reg 0x60 val = 0x0
reg 0x61 val = 0x1e00
reg 0x62 val = 0x0
reg 0x63 val = 0xa00
reg 0x64 val = 0x1100
reg 0xb0 val = 0x400
reg 0xb1 val = 0x4a00
reg 0xb2 val = 0x3f00
reg 0xf0 val = 0x5f00
reg 0xf1 val = 0x5500
reg 0xf2 val = 0x4200
reg 0xf3 val = 0x3900
reg 0xf4 val = 0x3500
reg 0xf5 val = 0x3300

Hello Rathna,

I have compared both register dumps. The only difference I can see is that in the 60fps case there are CSI errors; Length errors and Checksum errors.

Everything else is identical. The DES is LOCKed and the same Line count and Line length are received in the DES. Also, the DES is having valid CSI data at its CSI-2 Tx port.

Anonymous said:

4, We are not receiving any buffers.

Can you explain this?