MicroSD Memory Card Transport Project

[Bunpei]

Originally Posted by lga775

what counters are 74AC163 and 74HC163 for? what are those 176.4khz,88.2khz and 44.1khz for?

As you have noticed, they are used for a frequency demultiplier to get relevant LRCLK or word clocks. In the case of SDTrans192, it just requires a master system clock. It can't accept any external word clock input.

Bunpei

[Bunpei]

Originally Posted by lukedodd

I have joined this thread recently. I would like to purchase the kit, can someone help with the necessary link.

Dear Luke,

I sent detailed information to you by my private message.
Please read it and give me a private usual e-mail reply if you are interested in this kit.
You can look at some pictures on Chiaki's web site also
SDƒJ�[ƒh�Eƒgƒ‰ƒ“ƒXƒ|�[ƒg‚ð�ì‚Á‚Ä‚Ý‚Ü‚µ‚½�@�|‚»‚Ì2�|�@SDTrans192
though the page is written in Japanese.

Best regards,
Bunpei

[lga775]

Originally Posted by Bunpei

As you have noticed, they are used for a frequency demultiplier to get relevant LRCLK or word clocks. In the case of SDTrans192, it just requires a master system clock. It can't accept any external word clock input.

Bunpei

so if let say i would just like to use the clock as 22.5792mhz output i dont need 74HC163?

[Bunpei]

Originally Posted by lga775

so if let say i would just like to use the clock as 22.5792mhz output i dont need 74HC163?

You don't need those counter ICs.

Bunpei

[lga775]

Originally Posted by Bunpei

You don't need those counter ICs.

Bunpei

u mean if i want to merely multiply the clock frequency i don need 74hc163 and 74ac163? do i need sn75157?

[Bunpei]

Originally Posted by lga775

u mean if i want to merely multiply the clock frequency i don need 74hc163 and 74ac163? do i need sn75157?

You need the SN75157 for sine wave -> square wave conversion.
(It's a comparator.)

[lga775]

Originally Posted by Bunpei

You need the SN75157 for sine wave -> square wave conversion.
(It's a comparator.)

hi mr Bunpei.. do you mind to get me a circuit merely for sine wave to square wave conversion and clock multiplying? i really need it for clock multiplying and square wave conversion. Thanks.

[Charcoal]

Where can I check price for kit and for ready made Sdtrans?

[Bunpei]

Originally Posted by lga775

do you mind to get me a circuit merely for sine wave to square wave conversion and clock multiplying? i really need it for clock multiplying and square wave conversion.

To lag775,

Last Friday, I sent my diyAudio private message to you regarding your request. Please read and give me your reply by a private e-mail.

Bunpei

[Bunpei]

Originally Posted by Charcoal

Where can I check price for kit and for ready made Sdtrans?

Dear Charcoal,

I sent you a detailed explanation to you by diyAudio private message.
Please read the message.

Best regards,
Bunpei