sorry, I did not answer to one of your questions.
The Locked LED is switching on after finazilation of BAP1000 (and DIR9001) start up. Independent if input signal present.
BCK is a sqarewave with 2.822MHz and about 6.5V Upeak, L/R is at 44.1kHz and about 6.2V. Both signal look tge same: with CS8421 connected or not
The Locked LED is switching on after finazilation of BAP1000 (and DIR9001) start up. Independent if input signal present.
BCK is a sqarewave with 2.822MHz and about 6.5V Upeak, L/R is at 44.1kHz and about 6.2V. Both signal look tge same: with CS8421 connected or not
do you mean just inverting the signal?
I thought that the PLL just locks on the frequency ...
I am wondering if there is some configuration needed since the BAP clocks on 384*Fs...
I thought that the PLL just locks on the frequency ...
I am wondering if there is some configuration needed since the BAP clocks on 384*Fs...
Invert BCLK and change the 16K2 resistor to 1K0 but do not connect it to ground. Connect the other end to V+.
Hi,
just to understand: Inverting BCLK by using a 1kOhm pull-up to V+ instead of 16k2 to GND correct?
Thanks!
just to understand: Inverting BCLK by using a 1kOhm pull-up to V+ instead of 16k2 to GND correct?
Thanks!
Inverting BCLK is a standalone operation. The second action, changing 16k2 connected to ground to 1k0 connected to V+ changes the position of the data in the frame. It goes from Left justified to Right justified. The first action is because the CS5338 has data valid on the falling edge but the CS8421 expects data to be valid on the rising edge hence the need for inversion. The second takes into account the role of FSYNC and its effect on the data.
If you already have some 74 series TTL chips but not the 74HC04, it may be possible to make an inverter from what you have.
Hi,
unfortunately I did not find any 74HC with inverter option.
The only things I found are some optocoppler (4N32) or TTL Comparator (MAX912 CPE).
If I have to order a component anyhow, what would be best for the job?
Thanks
unfortunately I did not find any 74HC with inverter option.
The only things I found are some optocoppler (4N32) or TTL Comparator (MAX912 CPE).
If I have to order a component anyhow, what would be best for the job?
Thanks
74HC04 inverter. There are six in the package. OTOH, if you can handle really small chips, there is the single NAND gate 74LVC1G00.
I think I better stay with the bigger packages (after ripping of the leg of the ADC). Just ordered in SO14.
Thanks!
Thanks!
It works!
Hi,
after some soldering and paranoid checking...everything works splendidly.
So far I have checked only the TOSLINK input. No artifacts, drops, clicks or other issues.
I attached some pictures. Now I have to mechanically fix it properly.
Dear rfbrw my biggest respect and a big, fat THANK YOU!
Hi,
after some soldering and paranoid checking...everything works splendidly.
So far I have checked only the TOSLINK input. No artifacts, drops, clicks or other issues.
I attached some pictures. Now I have to mechanically fix it properly.
Dear rfbrw my biggest respect and a big, fat THANK YOU!
AKG BAP1000 USB-in
As an update to everyone who also would like to upgrade the BAP1000 with a digital input.
With rfbrw's great support I was able to add an USB input. Of course the internal digital architecture is only 16/44.1 but the ASRC takes care of converting different formats.
For USB input the DIR9001 board has to be repaced by an USB Interface Card I2S Output (I took this one: XMOS + CPLD U208 USB Interface Card I2S output for ES9038 DAC board #Xe - Top | eBay).
As an update to everyone who also would like to upgrade the BAP1000 with a digital input.
With rfbrw's great support I was able to add an USB input. Of course the internal digital architecture is only 16/44.1 but the ASRC takes care of converting different formats.
For USB input the DIR9001 board has to be repaced by an USB Interface Card I2S Output (I took this one: XMOS + CPLD U208 USB Interface Card I2S output for ES9038 DAC board #Xe - Top | eBay).
