(CY7C68300C) About procedure necessary for recognition of CF

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noha_3407421
Level 3
Level 3
Distributor - TED (Japan)
First like received 10 replies posted 10 questions asked

Hi,

I want to confirm about CY7C68320C-100AXC.

(Background)

Customers use the CY7C68300C as a controller for CF (CompactFlash).

There is no problem accessing the CF.

However, if you insert or remove a CF card, it will occasionally not be recognized.

Q.

Would you tell me the steps needed to recognize CF?

*

The following is the content that we believe is necessary for CF recognition.

  1)DRVPWRVLD pin status.

  2)ARESET# pin status. (To confirm if it is asserted for CF reset)

  3)INTRQ# pin status.

  4)Is CF power ON / OFF control necessary for CF reset?

----------------------------

【質問事項】

現状、CFのコントローラとしてCY7C68300Cを使用しています。

CFへのアクセスはできるのですが、CFカードの抜き差しを行うと

たまに認識しなくなることがあります。

CFを認識するにあったって、何かエラーが発生していると

思われますが、CFの認識に必要な手順をご教示ください。

以下、CF認識のために必要ではないかと考えている内容です。

①    DRVPWRVLDピンの状態でCFの有無を確認しているでしょうか?

②    CFリセットのためにARESEST#は発行されているでしょうか?

③    CFの状態確認のため、INTRQの状態確認はされているでしょうか?

④    CFリセットのためにCFの電源ON/OFF制御等は必要でしょうか?

----------------------------

Best Regards,

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1 Solution
HirotakaT_91
Moderator
Moderator
Moderator
500 replies posted 250 replies posted 100 replies posted

Hello,

We are taking a time to find out answer for your queries.

Could you let me know some information as follows?

1. Can the customer get USB trace for during CF plug/unplug? We would like to confirm whether "Test Unit Ready" is successful.

2. What is the configuration bits status on:

a. DRIVE POWER VALID ENABLE : (Bit 0 at Address 0x08)

b. SEARCH_ATA_BUS  (Bit 6 at Address 0x08)

c. SEARCH ATA ON VBUS (Bit 0 at Address 0x0E)

Best regards,

Hirotaka Takayama

View solution in original post

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2 Replies
HirotakaT_91
Moderator
Moderator
Moderator
500 replies posted 250 replies posted 100 replies posted

Hello,

We are taking a time to find out answer for your queries.

Could you let me know some information as follows?

1. Can the customer get USB trace for during CF plug/unplug? We would like to confirm whether "Test Unit Ready" is successful.

2. What is the configuration bits status on:

a. DRIVE POWER VALID ENABLE : (Bit 0 at Address 0x08)

b. SEARCH_ATA_BUS  (Bit 6 at Address 0x08)

c. SEARCH ATA ON VBUS (Bit 0 at Address 0x0E)

Best regards,

Hirotaka Takayama

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noha_3407421
Level 3
Level 3
Distributor - TED (Japan)
First like received 10 replies posted 10 questions asked

Hi Takayama-san,

Thank you for your reply.

We are currently confirming that.

I will add it as soon as I can confirm.

Best Regards,

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