Part Number: SN75DP159
Hello expert,
My customer got a FA case and the issue is their NB cannot show the screen to HDMI display. After A-B-A testing, we know that issue does follow IC. And impedance is shown as below table. It seems like there are OUT and VDD impedance different. May I know if this IC is still good or can we send to FA step? Thanks a lot!
| top side marking | 75DP159 | 75DP159 | |
| TI 74I | TI 88I | ||
| CHFJ G4 | A4YD G4 | ||
| good sample impedance | FA sample impedance | ||
| (PIN NO.) | |||
| 1 | SWAP/POL | 70k | 68k |
| 2 | IN_D2p | 68k | 67k |
| 3 | IN_D2n | 68k | 67k |
| 4 | HPD_SRC | 47k | 47k |
| 5 | IN_D1p | 68k | 67k |
| 6 | IN_D1n | 68k | 67k |
| 7 | GND | 0.7ohm | 0.8ohm |
| 8 | IN_D0p | 68k | 67k |
| 9 | IN_D0n | 68k | 67k |
| 10 | I2C_EN/PIN | 90k | 90k |
| 11 | IN_CLKp | 68k | 67k |
| 12 | IN_CLKn | 68k | 67k |
| 13 | VCC | 31k | 31k |
| 14 | VDD | 1.49k | 2.2k |
| 15 | SCL_CTL | 727k | 731k |
| 16 | SDA_CTL | 730k | 725k |
| 17 | NC | 90k | 90k |
| 18 | CEC_EN | 47k | 46k |
| 19 | GND | 0.3ohm | 0.7ohm |
| 20 | PRE_SEL | 70k | 67k |
| 21 | EQ_SEL/A0 | 70k | 68k |
| 22 | Vsadj | 25k | 24k |
| 23 | VDD | 2.6k | 2.7k |
| 24 | VDD | 2.2k | OL |
| 25 | OUT_CLKn | 75k | 74k |
| 26 | OUT_CLKp | 75k | 74k |
| 27 | #HDMI_SEL/A1 | 90k | 90k |
| 28 | OUT_D0n | 75k | 74k |
| 29 | OUT_D0p | 75k | 74k |
| 30 | GND | 0.3ohm | 0.7ohm |
| 31 | OUT_D1n | 75k | 78k |
| 32 | OUT_D1p | 75k | 78k |
| 33 | HPD_SNK | 191k | 185k |
| 34 | OUT_D2n | 75k | 48k |
| 35 | OUT_D2p | 75k | 48k |
| 36 | TX_TERM_CTTL | 70k | 68k |
| 37 | VDD | 2.2k | 2.4k |
| 38 | SCL_SNK | 751k | 760k |
| 39 | SDA_SNK | 741k | 753k |
| 40 | SLEW_CTL | 68k | 67.5k |
| 41 | GND | 0.3ohm | 0.7ohm |
| 42 | OE | 95k | 94k |
| 43 | VCC | 31k | 31k |
| 44 | AUX_SRCn | 15k | 15k |
| 45 | AUX_SRCp | 16k | 15k |
| 46 | SCL_SRC | 768k | 753k |
| 47 | SDA_SRC | 747k | 735k |
| 48 | VDD | 1.49k | 2.2k |
| Thermal Pad | 0.3ohm | 0.3ohm | |
Best regards,
Ann Lien