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Hi TI,
When I use the SN65DP159, I found the regiseter 0B[4:3] can NOT be written.
I have strapped the I2C_EN/PIN to VCC3V3 through a 10K resister,and the let the TX_TERM_CTL No Connext.
And I set the 0x0B=0x89, When I read back the 0x0B, found it is 0x81, the[4:3] can NOT be changed.
WHY? and How can I fix it.
PS: I have another board same as this one. That one can work normally, and this one has NO hdmi data output.
I don't konw the reason.
Hi,
For the pullup resistor on I2C_EN, please change the resistor from the 10k to 65k as required by the DP159 datasheet.
Once the resistor has been changed from the 10k to the 65k, can you please check to see if you are able to correctly read the register 0x00h to 0x08h?
Thanks
David
Hi David,
I Change the resistor to 65K.
And the register 0x00h t0 0x08h is correct.
But the 0x0B[4:3] still can NOT be written.
Would you please help?
Hi,
The only way the writes to the register 0x0B[4:3] will be ignored when I2C_EN/PIN = 0.
Can you please check the power sequence and use the 0.22uF on the OE pin?
Since it happens on this board only, is it possible that you can re-flow the DP159?
Thanks
David
Hi David,
I change the cap of OE to 0.22uF.
And Check the power sequence is OK.
But the device still has no output data .
So I dump the register as the attachment.
I compared it to the device that can normally work, found the register on page0 is totally same.
Would you please help me ??
page0 Reg[0x0] = 0x44 Reg[0x1] = 0x50 Reg[0x2] = 0x31 Reg[0x3] = 0x35 Reg[0x4] = 0x39 Reg[0x5] = 0x20 Reg[0x6] = 0x20 Reg[0x7] = 0x20 Reg[0x8] = 0x1 Reg[0x9] = 0x2 Reg[0xa] = 0x3b Reg[0xb] = 0x89 Reg[0xc] = 0x0 Reg[0xd] = 0x0 Reg[0xe] = 0x0 Reg[0xf] = 0xf Reg[0x10] = 0x0 Reg[0x11] = 0x0 Reg[0x12] = 0x0 Reg[0x13] = 0x0 Reg[0x14] = 0x0 Reg[0x15] = 0x80 Reg[0x16] = 0xe0 Reg[0x17] = 0x11 Reg[0x18] = 0xff Reg[0x19] = 0xf Reg[0x1a] = 0x0 Reg[0x1b] = 0x0 Reg[0x1c] = 0x0 Reg[0x1d] = 0x0 Reg[0x1e] = 0x0 Reg[0x1f] = 0x0 Reg[0x20] = 0xa Reg[0x21] = 0x0 Reg[0x22] = 0x0 Reg[0x23] = 0x0 Reg[0x24] = 0x0 Reg[0x25] = 0x0 Reg[0x26] = 0x0 Reg[0x27] = 0x0 Reg[0x28] = 0x0 Reg[0x29] = 0x0 Reg[0x2a] = 0x0 Reg[0x2b] = 0x0 Reg[0x2c] = 0x0 Reg[0x2d] = 0x0 Reg[0x2e] = 0x0 Reg[0x2f] = 0x0 Reg[0x30] = 0x0 Reg[0x31] = 0x0 Reg[0x32] = 0x0 Reg[0x33] = 0x0 Reg[0x34] = 0x0 Reg[0x35] = 0x0 Reg[0x36] = 0x0 Reg[0x37] = 0x0 Reg[0x38] = 0x0 Reg[0x39] = 0x0 Reg[0x3a] = 0x0 Reg[0x3b] = 0x0 Reg[0x3c] = 0x0 Reg[0x3d] = 0x0 Reg[0x3e] = 0x0 Reg[0x3f] = 0x0 Reg[0x40] = 0x0 Reg[0x41] = 0x0 Reg[0x42] = 0x0 Reg[0x43] = 0x0 Reg[0x44] = 0x0 Reg[0x45] = 0x0 Reg[0x46] = 0x0 Reg[0x47] = 0x0 Reg[0x48] = 0x0 Reg[0x49] = 0x0 Reg[0x4a] = 0x0 Reg[0x4b] = 0x0 Reg[0x4c] = 0x0 Reg[0x4d] = 0x0 Reg[0x4e] = 0x0 Reg[0x4f] = 0x0 Reg[0x50] = 0x0 Reg[0x51] = 0x0 Reg[0x52] = 0x0 Reg[0x53] = 0x0 Reg[0x54] = 0x0 Reg[0x55] = 0x0 Reg[0x56] = 0x0 Reg[0x57] = 0x0 Reg[0x58] = 0x0 Reg[0x59] = 0x0 Reg[0x5a] = 0x0 Reg[0x5b] = 0x0 Reg[0x5c] = 0x0 Reg[0x5d] = 0x0 Reg[0x5e] = 0x0 Reg[0x5f] = 0x0 Reg[0x60] = 0x0 Reg[0x61] = 0x0 Reg[0x62] = 0x0 Reg[0x63] = 0x0 Reg[0x64] = 0x0 Reg[0x65] = 0x0 Reg[0x66] = 0x0 Reg[0x67] = 0x0 Reg[0x68] = 0x0 Reg[0x69] = 0x0 Reg[0x6a] = 0x0 Reg[0x6b] = 0x0 Reg[0x6c] = 0x0 Reg[0x6d] = 0x0 Reg[0x6e] = 0x0 Reg[0x6f] = 0x0 Reg[0x70] = 0x0 Reg[0x71] = 0x0 Reg[0x72] = 0x0 Reg[0x73] = 0x0 Reg[0x74] = 0x0 Reg[0x75] = 0x0 Reg[0x76] = 0x0 Reg[0x77] = 0x0 Reg[0x78] = 0x0 Reg[0x79] = 0x0 Reg[0x7a] = 0x0 Reg[0x7b] = 0x0 Reg[0x7c] = 0x0 Reg[0x7d] = 0x0 Reg[0x7e] = 0x0 Reg[0x7f] = 0x0 Reg[0x80] = 0x0 Reg[0x81] = 0x0 Reg[0x82] = 0x0 Reg[0x83] = 0x0 Reg[0x84] = 0x0 Reg[0x85] = 0x0 Reg[0x86] = 0x0 Reg[0x87] = 0x0 Reg[0x88] = 0x0 Reg[0x89] = 0x0 Reg[0x8a] = 0x0 Reg[0x8b] = 0x0 Reg[0x8c] = 0x0 Reg[0x8d] = 0x0 Reg[0x8e] = 0x0 Reg[0x8f] = 0x0 Reg[0x90] = 0x0 Reg[0x91] = 0x0 Reg[0x92] = 0x0 Reg[0x93] = 0x0 Reg[0x94] = 0x0 Reg[0x95] = 0x0 Reg[0x96] = 0x0 Reg[0x97] = 0x0 Reg[0x98] = 0x0 Reg[0x99] = 0x0 Reg[0x9a] = 0x0 Reg[0x9b] = 0x0 Reg[0x9c] = 0x0 Reg[0x9d] = 0x0 Reg[0x9e] = 0x0 Reg[0x9f] = 0x0 Reg[0xa0] = 0x0 Reg[0xa1] = 0x0 Reg[0xa2] = 0x0 Reg[0xa3] = 0x0 Reg[0xa4] = 0x0 Reg[0xa5] = 0x0 Reg[0xa6] = 0x0 Reg[0xa7] = 0x0 Reg[0xa8] = 0x0 Reg[0xa9] = 0x0 Reg[0xaa] = 0x0 Reg[0xab] = 0x0 Reg[0xac] = 0x0 Reg[0xad] = 0x0 Reg[0xae] = 0x0 Reg[0xaf] = 0x0 Reg[0xb0] = 0x0 Reg[0xb1] = 0x0 Reg[0xb2] = 0x0 Reg[0xb3] = 0x0 Reg[0xb4] = 0x0 Reg[0xb5] = 0x0 Reg[0xb6] = 0x0 Reg[0xb7] = 0x0 Reg[0xb8] = 0x0 Reg[0xb9] = 0x0 Reg[0xba] = 0x0 Reg[0xbb] = 0x0 Reg[0xbc] = 0x0 Reg[0xbd] = 0x0 Reg[0xbe] = 0x0 Reg[0xbf] = 0x0 Reg[0xc0] = 0x0 Reg[0xc1] = 0x0 Reg[0xc2] = 0x0 Reg[0xc3] = 0x0 Reg[0xc4] = 0x0 Reg[0xc5] = 0x0 Reg[0xc6] = 0x0 Reg[0xc7] = 0x0 Reg[0xc8] = 0x0 Reg[0xc9] = 0x0 Reg[0xca] = 0x0 Reg[0xcb] = 0x0 Reg[0xcc] = 0x0 Reg[0xcd] = 0x0 Reg[0xce] = 0x0 Reg[0xcf] = 0x0 Reg[0xd0] = 0x0 Reg[0xd1] = 0x0 Reg[0xd2] = 0x0 Reg[0xd3] = 0x0 Reg[0xd4] = 0x0 Reg[0xd5] = 0x0 Reg[0xd6] = 0x0 Reg[0xd7] = 0x0 Reg[0xd8] = 0x0 Reg[0xd9] = 0x0 Reg[0xda] = 0x0 Reg[0xdb] = 0x0 Reg[0xdc] = 0x0 Reg[0xdd] = 0x0 Reg[0xde] = 0x0 Reg[0xdf] = 0x0 Reg[0xe0] = 0x0 Reg[0xe1] = 0x0 Reg[0xe2] = 0x0 Reg[0xe3] = 0x0 Reg[0xe4] = 0x0 Reg[0xe5] = 0x0 Reg[0xe6] = 0x0 Reg[0xe7] = 0x0 Reg[0xe8] = 0x0 Reg[0xe9] = 0x0 Reg[0xea] = 0x0 Reg[0xeb] = 0x0 Reg[0xec] = 0x0 Reg[0xed] = 0x0 Reg[0xee] = 0x0 Reg[0xef] = 0x0 Reg[0xf0] = 0x0 Reg[0xf1] = 0x0 Reg[0xf2] = 0x0 Reg[0xf3] = 0x0 Reg[0xf4] = 0x0 Reg[0xf5] = 0x0 Reg[0xf6] = 0x0 Reg[0xf7] = 0x0 Reg[0xf8] = 0x0 Reg[0xf9] = 0x0 Reg[0xfa] = 0x0 Reg[0xfb] = 0x0 Reg[0xfc] = 0x0 Reg[0xfd] = 0x0 Reg[0xfe] = 0x0 page1 Reg[0x0] = 0xc3 Reg[0x1] = 0x1 Reg[0x2] = 0x3f Reg[0x3] = 0x0 Reg[0x4] = 0xa0 Reg[0x5] = 0x0 Reg[0x6] = 0x0 Reg[0x7] = 0x0 Reg[0x8] = 0x4 Reg[0x9] = 0x0 Reg[0xa] = 0x0 Reg[0xb] = 0x33 Reg[0xc] = 0x0 Reg[0xd] = 0x0 Reg[0xe] = 0x11 Reg[0xf] = 0x0 Reg[0x10] = 0xf Reg[0x11] = 0x10 Reg[0x12] = 0x20 Reg[0x13] = 0x7 Reg[0x14] = 0x0 Reg[0x15] = 0x0 Reg[0x16] = 0x0 Reg[0x17] = 0x0 Reg[0x18] = 0x0 Reg[0x19] = 0x0 Reg[0x1a] = 0x0 Reg[0x1b] = 0x0 Reg[0x1c] = 0x0 Reg[0x1d] = 0x0 Reg[0x1e] = 0x0 Reg[0x1f] = 0x0 Reg[0x20] = 0x0 Reg[0x21] = 0x0 Reg[0x22] = 0x0 Reg[0x23] = 0x0 Reg[0x24] = 0x0 Reg[0x25] = 0x0 Reg[0x26] = 0x0 Reg[0x27] = 0x0 Reg[0x28] = 0x0 Reg[0x29] = 0x0 Reg[0x2a] = 0x0 Reg[0x2b] = 0x0 Reg[0x2c] = 0x0 Reg[0x2d] = 0x0 Reg[0x2e] = 0x0 Reg[0x2f] = 0x0 Reg[0x30] = 0x7 Reg[0x31] = 0x30 Reg[0x32] = 0x8 Reg[0x33] = 0x0 Reg[0x34] = 0x0 Reg[0x35] = 0x0 Reg[0x36] = 0x0 Reg[0x37] = 0x0 Reg[0x38] = 0x1 Reg[0x39] = 0x1 Reg[0x3a] = 0x0 Reg[0x3b] = 0x8 Reg[0x3c] = 0x4 Reg[0x3d] = 0x6 Reg[0x3e] = 0x0 Reg[0x3f] = 0x0 Reg[0x40] = 0x80 Reg[0x41] = 0x80 Reg[0x42] = 0x80 Reg[0x43] = 0x80 Reg[0x44] = 0xea Reg[0x45] = 0x0 Reg[0x46] = 0x0 Reg[0x47] = 0x0 Reg[0x48] = 0xf0 Reg[0x49] = 0xfc Reg[0x4a] = 0xff Reg[0x4b] = 0xff Reg[0x4c] = 0x3 Reg[0x4d] = 0x10 Reg[0x4e] = 0x23 Reg[0x4f] = 0x72 Reg[0x50] = 0x0 Reg[0x51] = 0x0 Reg[0x52] = 0x0 Reg[0x53] = 0x0 Reg[0x54] = 0x0 Reg[0x55] = 0x0 Reg[0x56] = 0x0 Reg[0x57] = 0x0 Reg[0x58] = 0x0 Reg[0x59] = 0x0 Reg[0x5a] = 0x0 Reg[0x5b] = 0x0 Reg[0x5c] = 0x40 Reg[0x5d] = 0x40 Reg[0x5e] = 0x40 Reg[0x5f] = 0x40 Reg[0x60] = 0x0 Reg[0x61] = 0x0 Reg[0x62] = 0x0 Reg[0x63] = 0x0 Reg[0x64] = 0x0 Reg[0x65] = 0x0 Reg[0x66] = 0x0 Reg[0x67] = 0x0 Reg[0x68] = 0x0 Reg[0x69] = 0x0 Reg[0x6a] = 0x0 Reg[0x6b] = 0x0 Reg[0x6c] = 0x0 Reg[0x6d] = 0x0 Reg[0x6e] = 0x0 Reg[0x6f] = 0x0 Reg[0x70] = 0x0 Reg[0x71] = 0x0 Reg[0x72] = 0x0 Reg[0x73] = 0x0 Reg[0x74] = 0x0 Reg[0x75] = 0x0 Reg[0x76] = 0x0 Reg[0x77] = 0x0 Reg[0x78] = 0x0 Reg[0x79] = 0x0 Reg[0x7a] = 0x0 Reg[0x7b] = 0x0 Reg[0x7c] = 0x0 Reg[0x7d] = 0x0 Reg[0x7e] = 0x0 Reg[0x7f] = 0x0 Reg[0x80] = 0x0 Reg[0x81] = 0x10 Reg[0x82] = 0x0 Reg[0x83] = 0x0 Reg[0x84] = 0x0 Reg[0x85] = 0x0 Reg[0x86] = 0x0 Reg[0x87] = 0x0 Reg[0x88] = 0x0 Reg[0x89] = 0x0 Reg[0x8a] = 0x0 Reg[0x8b] = 0x0 Reg[0x8c] = 0x0 Reg[0x8d] = 0x0 Reg[0x8e] = 0x0 Reg[0x8f] = 0x0 Reg[0x90] = 0x0 Reg[0x91] = 0x0 Reg[0x92] = 0x0 Reg[0x93] = 0x0 Reg[0x94] = 0x0 Reg[0x95] = 0x0 Reg[0x96] = 0x0 Reg[0x97] = 0x0 Reg[0x98] = 0x0 Reg[0x99] = 0x0 Reg[0x9a] = 0x0 Reg[0x9b] = 0x0 Reg[0x9c] = 0x0 Reg[0x9d] = 0x0 Reg[0x9e] = 0x0 Reg[0x9f] = 0x0 Reg[0xa0] = 0x0 Reg[0xa1] = 0x0 Reg[0xa2] = 0x26 Reg[0xa3] = 0x0 Reg[0xa4] = 0x0 Reg[0xa5] = 0x0 Reg[0xa6] = 0x0 Reg[0xa7] = 0x0 Reg[0xa8] = 0x0 Reg[0xa9] = 0x0 Reg[0xaa] = 0x0 Reg[0xab] = 0x0 Reg[0xac] = 0x0 Reg[0xad] = 0x0 Reg[0xae] = 0x0 Reg[0xaf] = 0x0 Reg[0xb0] = 0xbe Reg[0xb1] = 0x82 Reg[0xb2] = 0x0 Reg[0xb3] = 0x0 Reg[0xb4] = 0x0 Reg[0xb5] = 0x0 Reg[0xb6] = 0x0 Reg[0xb7] = 0x0 Reg[0xb8] = 0x0 Reg[0xb9] = 0x0 Reg[0xba] = 0x0 Reg[0xbb] = 0x0 Reg[0xbc] = 0x0 Reg[0xbd] = 0x0 Reg[0xbe] = 0x0 Reg[0xbf] = 0x0 Reg[0xc0] = 0x0 Reg[0xc1] = 0x0 Reg[0xc2] = 0x0 Reg[0xc3] = 0x0 Reg[0xc4] = 0x0 Reg[0xc5] = 0x0 Reg[0xc6] = 0x0 Reg[0xc7] = 0x0 Reg[0xc8] = 0x0 Reg[0xc9] = 0x0 Reg[0xca] = 0x0 Reg[0xcb] = 0x0 Reg[0xcc] = 0x0 Reg[0xcd] = 0x0 Reg[0xce] = 0x0 Reg[0xcf] = 0x0 Reg[0xd0] = 0x0 Reg[0xd1] = 0x0 Reg[0xd2] = 0x0 Reg[0xd3] = 0x0 Reg[0xd4] = 0x0 Reg[0xd5] = 0x0 Reg[0xd6] = 0x0 Reg[0xd7] = 0x0 Reg[0xd8] = 0x0 Reg[0xd9] = 0x0 Reg[0xda] = 0x0 Reg[0xdb] = 0x0 Reg[0xdc] = 0x0 Reg[0xdd] = 0x0 Reg[0xde] = 0x0 Reg[0xdf] = 0x0 Reg[0xe0] = 0x0 Reg[0xe1] = 0x0 Reg[0xe2] = 0x0 Reg[0xe3] = 0x0 Reg[0xe4] = 0x0 Reg[0xe5] = 0x0 Reg[0xe6] = 0x0 Reg[0xe7] = 0x0 Reg[0xe8] = 0x0 Reg[0xe9] = 0x0 Reg[0xea] = 0x0 Reg[0xeb] = 0x0 Reg[0xec] = 0x0 Reg[0xed] = 0x0 Reg[0xee] = 0x0 Reg[0xef] = 0x0 Reg[0xf0] = 0x0 Reg[0xf1] = 0x0 Reg[0xf2] = 0x0 Reg[0xf3] = 0x0 Reg[0xf4] = 0x0 Reg[0xf5] = 0x0 Reg[0xf6] = 0x0 Reg[0xf7] = 0x0 Reg[0xf8] = 0x0 Reg[0xf9] = 0x0 Reg[0xfa] = 0x0 Reg[0xfb] = 0x0 Reg[0xfc] = 0x0 Reg[0xfd] = 0x0 Reg[0xfe] = 0x0
Hi,
Not able to write to the register and not able to output data are two separate issues.
For the issue not able to write to the registers
Are you now able to write to the registers?
If not, is register 0x0B[4:3] the only register that has this issue?
If you set TX_TERM_CTL = L, and then read register 0x0B in I2C mode, are you still seeing register 0x0B read back 0x81?
With I2C_EN = 1, are you able to correctly write and then read back other registers?
For the issue not able to output data
Can I please take a look at your schematic?
Do you have issue with HDMI1.4, 2.0 or both?
Looking at the register dump, why do you set DDC_TRAIN_SET to 1?
Thanks
David
Hi David,
For the issue not able to write to the registers:
I deleted the resistor which on the HPD_SNK pulled up to HDMI_5V.
Then the register 0x0B can be read and written normally.
For the issue not able to output data
the attachment is the schematic,please check.
Because I don't use the DDC function of the chip,so I disable the DDC_TRAIN_SET.
And the attachment is the registers's value,that has HDMI output and can be displayed on the TV.
(PS. I have another board that can work normally)
Would you please help?? Thank you very much~~SCHEMATIC1 _ P39_GTH_HDMI_FPGA2.pdf
Reg[0x0] = 0x44
Reg[0x1] = 0x50
Reg[0x2] = 0x31
Reg[0x3] = 0x35
Reg[0x4] = 0x39
Reg[0x5] = 0x20
Reg[0x6] = 0x20
Reg[0x7] = 0x20
Reg[0x8] = 0x1
Reg[0x9] = 0x2
Reg[0xa] = 0x3b
Reg[0xb] = 0x89
Reg[0xc] = 0x0
Reg[0xd] = 0x0
Reg[0xe] = 0x0
Reg[0xf] = 0xf
Reg[0x10] = 0x0
Reg[0x11] = 0x0
Reg[0x12] = 0x0
Reg[0x13] = 0x0
Reg[0x14] = 0x0
Reg[0x15] = 0x80
Reg[0x16] = 0xe0
Reg[0x17] = 0x11
Reg[0x18] = 0xff
Reg[0x19] = 0xf
Reg[0x1a] = 0x0
Reg[0x1b] = 0x0
Reg[0x1c] = 0x0
Reg[0x1d] = 0x0
Reg[0x1e] = 0x0
Reg[0x1f] = 0x0
Reg[0x20] = 0xa
Reg[0x21] = 0x0
Reg[0x22] = 0x0
Reg[0x23] = 0x0
Reg[0x24] = 0x0
Reg[0x25] = 0x0
Reg[0x26] = 0x0
Reg[0x27] = 0x0
Reg[0x28] = 0x0
Reg[0x29] = 0x0
Reg[0x2a] = 0x0
Reg[0x2b] = 0x0
Reg[0x2c] = 0x0
Reg[0x2d] = 0x0
Reg[0x2e] = 0x0
Reg[0x2f] = 0x0
Reg[0x30] = 0x0
Reg[0x31] = 0x0
Reg[0x32] = 0x0
Reg[0x33] = 0x0
Reg[0x34] = 0x0
Reg[0x35] = 0x0
Reg[0x36] = 0x0
Reg[0x37] = 0x0
Reg[0x38] = 0x0
Reg[0x39] = 0x0
Reg[0x3a] = 0x0
Reg[0x3b] = 0x0
Reg[0x3c] = 0x0
Reg[0x3d] = 0x0
Reg[0x3e] = 0x0
Reg[0x3f] = 0x0
Reg[0x40] = 0x0
Reg[0x41] = 0x0
Reg[0x42] = 0x0
Reg[0x43] = 0x0
Reg[0x44] = 0x0
Reg[0x45] = 0x0
Reg[0x46] = 0x0
Reg[0x47] = 0x0
Reg[0x48] = 0x0
Reg[0x49] = 0x0
Reg[0x4a] = 0x0
Reg[0x4b] = 0x0
Reg[0x4c] = 0x0
Reg[0x4d] = 0x0
Reg[0x4e] = 0x0
Reg[0x4f] = 0x0
Reg[0x50] = 0x0
Reg[0x51] = 0x0
Reg[0x52] = 0x0
Reg[0x53] = 0x0
Reg[0x54] = 0x0
Reg[0x55] = 0x0
Reg[0x56] = 0x0
Reg[0x57] = 0x0
Reg[0x58] = 0x0
Reg[0x59] = 0x0
Reg[0x5a] = 0x0
Reg[0x5b] = 0x0
Reg[0x5c] = 0x0
Reg[0x5d] = 0x0
Reg[0x5e] = 0x0
Reg[0x5f] = 0x0
Reg[0x60] = 0x0
Reg[0x61] = 0x0
Reg[0x62] = 0x0
Reg[0x63] = 0x0
Reg[0x64] = 0x0
Reg[0x65] = 0x0
Reg[0x66] = 0x0
Reg[0x67] = 0x0
Reg[0x68] = 0x0
Reg[0x69] = 0x0
Reg[0x6a] = 0x0
Reg[0x6b] = 0x0
Reg[0x6c] = 0x0
Reg[0x6d] = 0x0
Reg[0x6e] = 0x0
Reg[0x6f] = 0x0
Reg[0x70] = 0x0
Reg[0x71] = 0x0
Reg[0x72] = 0x0
Reg[0x73] = 0x0
Reg[0x74] = 0x0
Reg[0x75] = 0x0
Reg[0x76] = 0x0
Reg[0x77] = 0x0
Reg[0x78] = 0x0
Reg[0x79] = 0x0
Reg[0x7a] = 0x0
Reg[0x7b] = 0x0
Reg[0x7c] = 0x0
Reg[0x7d] = 0x0
Reg[0x7e] = 0x0
Reg[0x7f] = 0x0
Reg[0x80] = 0x0
Reg[0x81] = 0x0
Reg[0x82] = 0x0
Reg[0x83] = 0x0
Reg[0x84] = 0x0
Reg[0x85] = 0x0
Reg[0x86] = 0x0
Reg[0x87] = 0x0
Reg[0x88] = 0x0
Reg[0x89] = 0x0
Reg[0x8a] = 0x0
Reg[0x8b] = 0x0
Reg[0x8c] = 0x0
Reg[0x8d] = 0x0
Reg[0x8e] = 0x0
Reg[0x8f] = 0x0
Reg[0x90] = 0x0
Reg[0x91] = 0x0
Reg[0x92] = 0x0
Reg[0x93] = 0x0
Reg[0x94] = 0x0
Reg[0x95] = 0x0
Reg[0x96] = 0x0
Reg[0x97] = 0x0
Reg[0x98] = 0x0
Reg[0x99] = 0x0
Reg[0x9a] = 0x0
Reg[0x9b] = 0x0
Reg[0x9c] = 0x0
Reg[0x9d] = 0x0
Reg[0x9e] = 0x0
Reg[0x9f] = 0x0
Reg[0xa0] = 0x0
Reg[0xa1] = 0x0
Reg[0xa2] = 0x0
Reg[0xa3] = 0x0
Reg[0xa4] = 0x0
Reg[0xa5] = 0x0
Reg[0xa6] = 0x0
Reg[0xa7] = 0x0
Reg[0xa8] = 0x0
Reg[0xa9] = 0x0
Reg[0xaa] = 0x0
Reg[0xab] = 0x0
Reg[0xac] = 0x0
Reg[0xad] = 0x0
Reg[0xae] = 0x0
Reg[0xaf] = 0x0
Reg[0xb0] = 0x0
Reg[0xb1] = 0x0
Reg[0xb2] = 0x0
Reg[0xb3] = 0x0
Reg[0xb4] = 0x0
Reg[0xb5] = 0x0
Reg[0xb6] = 0x0
Reg[0xb7] = 0x0
Reg[0xb8] = 0x0
Reg[0xb9] = 0x0
Reg[0xba] = 0x0
Reg[0xbb] = 0x0
Reg[0xbc] = 0x0
Reg[0xbd] = 0x0
Reg[0xbe] = 0x0
Reg[0xbf] = 0x0
Reg[0xc0] = 0x0
Reg[0xc1] = 0x0
Reg[0xc2] = 0x0
Reg[0xc3] = 0x0
Reg[0xc4] = 0x0
Reg[0xc5] = 0x0
Reg[0xc6] = 0x0
Reg[0xc7] = 0x0
Reg[0xc8] = 0x0
Reg[0xc9] = 0x0
Reg[0xca] = 0x0
Reg[0xcb] = 0x0
Reg[0xcc] = 0x0
Reg[0xcd] = 0x0
Reg[0xce] = 0x0
Reg[0xcf] = 0x0
Reg[0xd0] = 0x0
Reg[0xd1] = 0x0
Reg[0xd2] = 0x0
Reg[0xd3] = 0x0
Reg[0xd4] = 0x0
Reg[0xd5] = 0x0
Reg[0xd6] = 0x0
Reg[0xd7] = 0x0
Reg[0xd8] = 0x0
Reg[0xd9] = 0x0
Reg[0xda] = 0x0
Reg[0xdb] = 0x0
Reg[0xdc] = 0x0
Reg[0xdd] = 0x0
Reg[0xde] = 0x0
Reg[0xdf] = 0x0
Reg[0xe0] = 0x0
Reg[0xe1] = 0x0
Reg[0xe2] = 0x0
Reg[0xe3] = 0x0
Reg[0xe4] = 0x0
Reg[0xe5] = 0x0
Reg[0xe6] = 0x0
Reg[0xe7] = 0x0
Reg[0xe8] = 0x0
Reg[0xe9] = 0x0
Reg[0xea] = 0x0
Reg[0xeb] = 0x0
Reg[0xec] = 0x0
Reg[0xed] = 0x0
Reg[0xee] = 0x0
Reg[0xef] = 0x0
Reg[0xf0] = 0x0
Reg[0xf1] = 0x0
Reg[0xf2] = 0x0
Reg[0xf3] = 0x0
Reg[0xf4] = 0x0
Reg[0xf5] = 0x0
Reg[0xf6] = 0x0
Reg[0xf7] = 0x0
Reg[0xf8] = 0x0
Reg[0xf9] = 0x0
Reg[0xfa] = 0x0
Reg[0xfb] = 0x0
Reg[0xfc] = 0x0
Reg[0xfd] = 0x0
Reg[0xfe] = 0x0
page1
Reg[0x0] = 0xc3
Reg[0x1] = 0x1
Reg[0x2] = 0x3f
Reg[0x3] = 0x0
Reg[0x4] = 0xa0
Reg[0x5] = 0x0
Reg[0x6] = 0x0
Reg[0x7] = 0x0
Reg[0x8] = 0x4
Reg[0x9] = 0x0
Reg[0xa] = 0x0
Reg[0xb] = 0x33
Reg[0xc] = 0x0
Reg[0xd] = 0x0
Reg[0xe] = 0x11
Reg[0xf] = 0x0
Reg[0x10] = 0xf
Reg[0x11] = 0x10
Reg[0x12] = 0x20
Reg[0x13] = 0x7
Reg[0x14] = 0x0
Reg[0x15] = 0x0
Reg[0x16] = 0x0
Reg[0x17] = 0x0
Reg[0x18] = 0x0
Reg[0x19] = 0x0
Reg[0x1a] = 0x0
Reg[0x1b] = 0x0
Reg[0x1c] = 0x0
Reg[0x1d] = 0x0
Reg[0x1e] = 0x0
Reg[0x1f] = 0x0
Reg[0x20] = 0x0
Reg[0x21] = 0x0
Reg[0x22] = 0x0
Reg[0x23] = 0x0
Reg[0x24] = 0x0
Reg[0x25] = 0x0
Reg[0x26] = 0x0
Reg[0x27] = 0x0
Reg[0x28] = 0x0
Reg[0x29] = 0x0
Reg[0x2a] = 0x0
Reg[0x2b] = 0x0
Reg[0x2c] = 0x0
Reg[0x2d] = 0x0
Reg[0x2e] = 0x0
Reg[0x2f] = 0x0
Reg[0x30] = 0x7
Reg[0x31] = 0x30
Reg[0x32] = 0x8
Reg[0x33] = 0x0
Reg[0x34] = 0x0
Reg[0x35] = 0x0
Reg[0x36] = 0x0
Reg[0x37] = 0x0
Reg[0x38] = 0x0
Reg[0x39] = 0x8
Reg[0x3a] = 0x9
Reg[0x3b] = 0x8
Reg[0x3c] = 0x4
Reg[0x3d] = 0x6
Reg[0x3e] = 0x0
Reg[0x3f] = 0x0
Reg[0x40] = 0x80
Reg[0x41] = 0x80
Reg[0x42] = 0x80
Reg[0x43] = 0x80
Reg[0x44] = 0xc3
Reg[0x45] = 0x0
Reg[0x46] = 0x0
Reg[0x47] = 0x0
Reg[0x48] = 0x7f
Reg[0x49] = 0xf
Reg[0x4a] = 0x1
Reg[0x4b] = 0xff
Reg[0x4c] = 0x3
Reg[0x4d] = 0x10
Reg[0x4e] = 0x11
Reg[0x4f] = 0x70
Reg[0x50] = 0x0
Reg[0x51] = 0x0
Reg[0x52] = 0x0
Reg[0x53] = 0x0
Reg[0x54] = 0x0
Reg[0x55] = 0x0
Reg[0x56] = 0x0
Reg[0x57] = 0x0
Reg[0x58] = 0x0
Reg[0x59] = 0x0
Reg[0x5a] = 0x0
Reg[0x5b] = 0x0
Reg[0x5c] = 0x40
Reg[0x5d] = 0x40
Reg[0x5e] = 0x40
Reg[0x5f] = 0x40
Reg[0x60] = 0x0
Reg[0x61] = 0x0
Reg[0x62] = 0x0
Reg[0x63] = 0x0
Reg[0x64] = 0x0
Reg[0x65] = 0x0
Reg[0x66] = 0x0
Reg[0x67] = 0x0
Reg[0x68] = 0x0
Reg[0x69] = 0x0
Reg[0x6a] = 0x0
Reg[0x6b] = 0x0
Reg[0x6c] = 0x0
Reg[0x6d] = 0x0
Reg[0x6e] = 0x0
Reg[0x6f] = 0x0
Reg[0x70] = 0x0
Reg[0x71] = 0x0
Reg[0x72] = 0x0
Reg[0x73] = 0x0
Reg[0x74] = 0x0
Reg[0x75] = 0x0
Reg[0x76] = 0x0
Reg[0x77] = 0x0
Reg[0x78] = 0x0
Reg[0x79] = 0x0
Reg[0x7a] = 0x0
Reg[0x7b] = 0x0
Reg[0x7c] = 0x0
Reg[0x7d] = 0x0
Reg[0x7e] = 0x0
Reg[0x7f] = 0x0
Reg[0x80] = 0x0
Reg[0x81] = 0x10
Reg[0x82] = 0x0
Reg[0x83] = 0x0
Reg[0x84] = 0x0
Reg[0x85] = 0x0
Reg[0x86] = 0x0
Reg[0x87] = 0x0
Reg[0x88] = 0x0
Reg[0x89] = 0x0
Reg[0x8a] = 0x0
Reg[0x8b] = 0x0
Reg[0x8c] = 0x0
Reg[0x8d] = 0x0
Reg[0x8e] = 0x0
Reg[0x8f] = 0x0
Reg[0x90] = 0x0
Reg[0x91] = 0x0
Reg[0x92] = 0x0
Reg[0x93] = 0x0
Reg[0x94] = 0x0
Reg[0x95] = 0x0
Reg[0x96] = 0x0
Reg[0x97] = 0x0
Reg[0x98] = 0x0
Reg[0x99] = 0x0
Reg[0x9a] = 0x0
Reg[0x9b] = 0x0
Reg[0x9c] = 0x0
Reg[0x9d] = 0x0
Reg[0x9e] = 0x0
Reg[0x9f] = 0x0
Reg[0xa0] = 0x0
Reg[0xa1] = 0x0
Reg[0xa2] = 0xff
Reg[0xa3] = 0x0
Reg[0xa4] = 0x0
Reg[0xa5] = 0x0
Reg[0xa6] = 0x0
Reg[0xa7] = 0x0
Reg[0xa8] = 0x0
Reg[0xa9] = 0x0
Reg[0xaa] = 0x0
Reg[0xab] = 0x0
Reg[0xac] = 0x0
Reg[0xad] = 0x0
Reg[0xae] = 0x0
Reg[0xaf] = 0x0
Reg[0xb0] = 0xbe
Reg[0xb1] = 0x82
Reg[0xb2] = 0x0
Reg[0xb3] = 0x0
Reg[0xb4] = 0x0
Reg[0xb5] = 0x0
Reg[0xb6] = 0x0
Reg[0xb7] = 0x0
Reg[0xb8] = 0x0
Reg[0xb9] = 0x0
Reg[0xba] = 0x0
Reg[0xbb] = 0x0
Reg[0xbc] = 0x0
Reg[0xbd] = 0x0
Reg[0xbe] = 0x0
Reg[0xbf] = 0x0
Reg[0xc0] = 0x0
Reg[0xc1] = 0x0
Reg[0xc2] = 0x0
Reg[0xc3] = 0x0
Reg[0xc4] = 0x0
Reg[0xc5] = 0x0
Reg[0xc6] = 0x0
Reg[0xc7] = 0x0
Reg[0xc8] = 0x0
Reg[0xc9] = 0x0
Reg[0xca] = 0x0
Reg[0xcb] = 0x0
Reg[0xcc] = 0x0
Reg[0xcd] = 0x0
Reg[0xce] = 0x0
Reg[0xcf] = 0x0
Reg[0xd0] = 0x0
Reg[0xd1] = 0x0
Reg[0xd2] = 0x0
Reg[0xd3] = 0x0
Reg[0xd4] = 0x0
Reg[0xd5] = 0x0
Reg[0xd6] = 0x0
Reg[0xd7] = 0x0
Reg[0xd8] = 0x0
Reg[0xd9] = 0x0
Reg[0xda] = 0x0
Reg[0xdb] = 0x0
Reg[0xdc] = 0x0
Reg[0xdd] = 0x0
Reg[0xde] = 0x0
Reg[0xdf] = 0x0
Reg[0xe0] = 0x0
Reg[0xe1] = 0x0
Reg[0xe2] = 0x0
Reg[0xe3] = 0x0
Reg[0xe4] = 0x0
Reg[0xe5] = 0x0
Reg[0xe6] = 0x0
Reg[0xe7] = 0x0
Reg[0xe8] = 0x0
Reg[0xe9] = 0x0
Reg[0xea] = 0x0
Reg[0xeb] = 0x0
Reg[0xec] = 0x0
Reg[0xed] = 0x0
Reg[0xee] = 0x0
Reg[0xef] = 0x0
Reg[0xf0] = 0x0
Reg[0xf1] = 0x0
Reg[0xf2] = 0x0
Reg[0xf3] = 0x0
Reg[0xf4] = 0x0
Reg[0xf5] = 0x0
Reg[0xf6] = 0x0
Reg[0xf7] = 0x0
Reg[0xf8] = 0x0
Reg[0xf9] = 0x0
Reg[0xfa] = 0x0
Reg[0xfb] = 0x0
Reg[0xfc] = 0x0
Reg[0xfd] = 0x0
Reg[0xfe] = 0x0
Hi,
Looking at the schematic, the pullup on HDMI_SDA and HDMI_SCL needs to be 2k to meet the HDMI spec.
Can you please probe the HPD_SNK and HPD_SRC and make sure both of them are driven high?
Next, can you please probe the input and output clock? What is the clock frequency you are seeing?
Thanks
David
Hi David,
I changed the resistors of HDMI_SDA and SCL to 2K.
And the HPD_SNK and HPD_SRC are driven high.
The input clock is 148.5Mhz,but the output clock has no data and driven high.
Would you please help?
Thanks~~~
Hi David,
if you have any other idea or suggestion, please let me know.
Looking forward to your reply.
Thank you~
Hi,
Could you replace the DP159 with a new unit and see if there is an output clock?
Thanks
David
Hi David,
I changed the chip and the new chip has an output clock.
And I reconfig the regiseter,the chip can work normally .
The picture can be displayed on the TV.
Thanks very much~~