ADV7511W all registers read 0x13,why?

thanks.

what i use is 8-bit addressing.and write & read both can receive "ack".

I2C_write_8bit(0x39,0x41,0x10);usleep(1000);
I2C_write_8bit(0x39,0x98,0x03);usleep(1000);
I2C_write_8bit(0x39,0x9A,0xE0);usleep(1000);
I2C_write_8bit(0x39,0x9C,0x30);usleep(1000);
I2C_write_8bit(0x39,0x9D,0x61);usleep(1000);
I2C_write_8bit(0x39,0xA2,0xA4);usleep(1000);
I2C_write_8bit(0x39,0xA3,0xA4);usleep(1000);
I2C_write_8bit(0x39,0xE0,0xD0);usleep(1000);
I2C_write_8bit(0x39,0xF9,0x00);usleep(1000);

I2C_write_8bit(0x39,0x15,0x00);usleep(1000);
I2C_write_8bit(0x39,0x16,0x30);usleep(1000);
I2C_write_8bit(0x39,0x17,0x02);usleep(1000);
I2C_write_8bit(0x39,0x56,0x1a);usleep(1000);

I2C_write_8bit(0x39,0x18,0x40);usleep(1000);
I2C_write_8bit(0x39,0xAF,0x06);usleep(1000);

I2C_read_8bit(0x39,0x41,&read_buf); xil_printf("0x41=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x98,&read_buf); xil_printf("0x98=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x9A,&read_buf); xil_printf("0x9A=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x9C,&read_buf); xil_printf("0x9C=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x9D,&read_buf); xil_printf("0x9D=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0xA2,&read_buf); xil_printf("0xA2=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0xA3,&read_buf); xil_printf("0xA3=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0xE0,&read_buf); xil_printf("0xE0=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0xF9,&read_buf); xil_printf("0xF9=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x15,&read_buf); xil_printf("0x15=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x16,&read_buf); xil_printf("0x16=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x17,&read_buf); xil_printf("0x17=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x56,&read_buf); xil_printf("0x56=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0x18,&read_buf); xil_printf("0x18=%x\n\r",read_buf);usleep(1000);
I2C_read_8bit(0x39,0xAF,&read_buf); xil_printf("0xAF=%x\n\r",read_buf);usleep(1000);

ok,thanks.but it can not solve the problem.

Hi,

Are you using FPGA on your custom board ? If so please try FPGA reference design forum:https://ez.analog.com/fpga/.Please crosscheck with reference schematics of ADV7511W
And also reading back is a 2 step process. First you write the index register address you want to read back from and then send another Start bit, slave read address and then read back the data.  The second Start is sometimes referred to as a repeat start.

Thanks,

Poornima

HI，

YES,i am using fpga on our custom board,and it is zynqMP.

Today,i move the operation from xilinx SDK to linux,when i use i2c-tools,it work but also has a problem.

i can read and write some registers.like :i read reg-0x15=0x00,and write 0x10,then read again but it back 0x00 from reg-0x15.

whether the PD pin high or low,the i2c address is always  0x39,which mean 0x72.

whether the PD pin high or low,i read 0x41 & 0x42 register, reg-0x41=0x50,reg-0x42=0xf0,and i can not config reg-0x41 to 0x10,it read back reg-0x41=0x50.

note: i measure the hpd=high,i measure the PD when i change the power.

so ,what can be the reason ?

so ,i have to use your lib & driver to config registers? 

hi,i success config reg-0x41 by set reg-0xd6=0xc0,but my hpd already pull high .

that's strange.why?

my board TXC0-/TXC0+ TX0-/TX0+ TX1-/TX1+ TX2-/TX2+ have been pull up to 3.3V, right?

Hi,

As per hardware user guide, A pull-up resistor of 2kΩ (+/-10%) to 1.8V or 3.3V is recommended for each of these SDA/SCL signals. See figure25(Example Schematics) in ADV7511w hardware user guide.

And also for more details,Please refer here https://ez.analog.com/video/f/q-a/9378/hdmi-tx-adv7511w/7044#7044

Please let me know, why register 0x41 is configured as 0x50 for power down the whole chip.
To power up the part,the the Power Down register bit (0x41[6]) must be written to 0 when the HPD pin is high.

Thanks,

Poornima