CON Board P-GAMMA & DC-DC IC Programming Tutorials.108

datasheet or the list: “T-CON Board P-GAMMA & DC-DC IC Read/Write Pins List”.

1) BUF16821 P-GAMMA IC

The T-CON board 6870C-3500C is come with this BUF16821 IC. This T-CON board is usually using in LG 32~55 inches TV. This GAMMA IC inside ROM has two BANKS. Normally just use 1 BANK only.

The BUF16821 IC pin-14= SCL and pin-15= SDA usually is connect to the T-con Board LVDS connector pin-4= SDA and pin-5= SCL. IC BUF16821 pin-16= AO must connect to GND (use multimeter/ohm meter to measure it), pin-17= BKSEL (default setting is connected to ground).

Use a DIY 51-pins LG32~52 inches LVDS cable with 51-pins

connector, one side connect to RT809F programmer socket pin-6= SCL,

pin-7= SDA, pin-8= GND. Another side is connected to T-CON board LVDS connector (for T-con board 6870C-3500C) pin-4= SDA, pin-5=

SCL and connect the GND pins. The DIY LVDS cable Vcc input one side connects to 12V DC Power Supply. Another side is connecting to the T-CON Board LVDS connector VCC input pin/s.

Attention: Actually you can just use the cables direct connect to their IC pins and supply the Vcc 12V to their T-con Vcc input. After that, this cable is connects to the RT809F programmer and do the

write/programming IC. So it will depend on which method you’re feeling better to use, and then just use it (also for the other Programmable IC tutorials too).

Notes:

a) Please refer to their Panel datasheet or T-CON Board LVDS

b) This BUF16821 IC has a limit times to their each BANK to

write/programming. Maximum per BANK is limit to 16 times. But read/copy is unlimited times to the IC. When the IC reached 16 times to write/programming, the RT809F software will show

“Checksum Error” message on screen and it is because the IC itself has blocking it.

If this IC has two BANKS, then we can disconnect their BKSEL pin from ground (GND) and connect it to 3V (active high). The IC will automatically change to another BANK to save the data. So for the new BANK, we can continue to write/programming another 16 times again.

c) If unsuccessful to write/programming the IC, please double check the above connection and also their VS and VSD voltage range is in the normal values or not.

2) TPS65178 DC-DC IC

The T-CON board 6870C-0401B is come with this TPS65178 IC. This T-CON board is usually using in LG 32~55 inches TV. This DC-DC IC inside has built-in an EEPROM with a limitation allow to WRITE 16 times only.

The connection of the T-CON board (SDA & SCL lines) and RT809F Programmer is same as the BUF16821 IC.

The TPS65175 & TPS65168 also use the same method like TPS6178 IC to do write/programming the programmable IC.

Notes:

a) Please refer to their Panel datasheet or T-CON Board LVDS

connector for the correct VCC voltage values & pins configuration (also for the other Programmable IC tutorials too).

b) Because of this TPS65178 has 1 EEPROM built-in, so don’t

write/programming this IC more than 16 times. If not, it will cause the write/programming fail or checksum error appear and can’t write/programming the new data/firmware into it. But reading IC is unlimited times to use.

c) Inside the RT809F software, you will found a button call “Restore”.

When this IC TPS65178 connected successfully on RT809F, if click on this “Restore” button, the software can help this IC reset to their default voltage output setting like below:

VCC: 3.3V Vcore: 1.8V VDD: 16V VGH: 25.8V VGL: -5V VCOM: 7.3V

d) The TPS65168 IC after click on “Restore” button, IC will reset to their default voltage output setting like below:

VCC: 3.3V Vcore: 1.0V VDD: 16V VGH: 25.7V VGL: -5.24V VCOM: 8V

3) ISL24837A P-GAMMA IC

The T-CON board: Sharp RUNTK_5317TP_0075FV is come with this ISL24837A IC. This T-CON board also can use the 51-pins LVDS cable to do the write/programming as usually using in LG 32~55 inches TV.

This GAMMA IC inside has built-in an EEPROM (260-bits) with a limitation allow to WRITE/PROGRAMMING not more than 300 times only.

The connection of the T-CON board (SDA & SCL lines) and RT809F Programmer is same as the BUF16821 IC. But the pin number is a bit different. The DIY 51-pins LVDS cable connector pin-2 is SDA, pin-3 is SCL and pin-1 is GND. Also don’t forget to provide 12V to their VCC input pin/s.

RT809F Software Programming Programmable IC Process

1) Connect the RT809F Programmer with T-CON Board through DIY 51-pins LG32~55 Inches LVDS Cable. You can refer to the above

Programmable IC tutorial. Double check all the connection and supply the correct voltages to the VCC pin/s.

2) Open RT809F software.

3) Click on the AUTO ISP button, it will detected the programmable IC and it will pop-up a screen with Programmable IC list.

4) Choose the correct Programmable IC part number and click OK.

5) After select Programmable IC, click on the “READ” button to start reading the Programmable IC data/firmware.

6) After finished successful reading the Programmable IC, you can click on the “SAVE” button to copy this data/firmware into your computer or laptop.

7) If you want to WRITE/PROGRAMMING the programmable IC, click on the “OPEN” button and go to the computer folder to select the correct part number (also other part number/model same information). Click on the “WRITE” button to write/programming Programmable IC.

8) If finished successful to write/programming the Programmable IC, it will show “Checksum” ok/success.

9) So you can remove all the cable and connector and put it back the T-CON board to TV and give it a try. Good luck!

T-CON Board P-GAMMA & DC-DC IC Read/Write Pins List