DS160PR822: Does device support 28Gbps operation?

Mark Patton

Part Number: DS160PR822
Other Parts Discussed in Thread: DS160PR410, DS320PR822

Hello TI Team,

We are interested in using the DS160PR822 for both PCIe 4.0 and GBASE-KR/KR4 Ethernet applications, configurable at boot. For PCIe 4.0 use case, we will utilize the RX detect mechanism offered by the chip. For the Ethernet use case, we will disable the RX detect mechanism per datasheet section 7.3.3. Some questions:

1. Does the DS160PR822 support GBASE-KR/KR4 Ethernet applications? If not, is there a more appropriate part for our application?

2. Can the DS160PR822 support data-rates up to 28Gbps operation (similar to the DS160PR410 which can support data-rates up to 25Gbps)? If not, is there a more appropriate part for our application?

3. In MODE=L2 (I2C slave mode), can each lane-pair have its 2x2 crosspoint be individually controlled, or do all 2x2 crosspoints change together as in PIN mode?

Thanks,

-Mark

over 4 years ago

0 Nasser Mohammadi over 4 years ago

TI__Guru* 93670 points

Hi Mark,

Apologize for long delay.

1). PR822 is a linear device and supports KR mode.

2). Suggestion is to to use IBIS-AMI model to check using your s-parameter models. There is another device - DS320PR822 - targeted for PCIe Gen5 which may be more applicable. Please send me a friend request long with your email address so we can provide you these models.

3). Yes this can be controlled through SMBus interface.

Regards ,,Nasser

0 Mark Patton over 3 years ago in reply to Nasser Mohammadi

Prodigy 135 points

Hi Nasser,

Thanks for the response. Please note that I sent a friend request and note your way indicating desire for the IBIS-AMI models and for more information regarding the DS320PR822 device. As our design is moving forward, I very much look forward to hearing back from you.

Regards, Mark

0 Nasser Mohammadi over 3 years ago in reply to Mark Patton

TI__Guru* 93670 points

Hi Mark,

Please send me your company email address through friend request. I can see your request but can't see your message or email address.

Regards ,, Nasser

0 Mark Patton over 3 years ago in reply to Nasser Mohammadi

Prodigy 135 points

Hi Nasser,

I had sent my email and contact info in a private message to you after my original friend request was accepted. The only option that E2E design support is offering me at the moment is to 'Unfriend', which doesn't seem helpful. Therefore, in order to break the seeming logjam here is my email: mark.patton@newwavedv.com. Thanks in advance for your help.

Regards, Mark

0 Nasser Mohammadi over 3 years ago in reply to Mark Patton

TI__Guru* 93670 points

Hi Mark,

Just sent you an email to follow up on this.

Regards ,, Nasser

0 Mark Patton over 3 years ago in reply to Nasser Mohammadi

Prodigy 135 points

Hi Nasser,

Thanks for your email reply and help. It is greatly appreciated.

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DS160PR822: Does device support 28Gbps operation?