Code sees like this, that support hardware must necessarily provide support for 
older equipment l—even models or revs that aren’t sold anymore. That’s just the 
nature of hardware drivers. 

The schematic update policy is a business thing that I’m not qualified to 
comment on. 

Sent from my iPhone

> On Mar 21, 2021, at 9:57 PM, Oscar Pablo <oscar_pab...@outlook.com> wrote:
> 
> 
> i don't understand why keep the the source code for the product that will 
> never show. and release a schematic for the product that will never show. if 
> there is no source code to support the schematic then this schematic is no 
> useful. i know x300 schematic hide the part of pcie. but if other part is ok 
> then it still have value for reference if someone want to use some part of 
> it. 
> 
> 
> From: Marcus D. Leech <patchvonbr...@gmail.com>
> Sent: Sunday, March 21, 2021 3:13 PM
> To: usrp-users@lists.ettus.com <usrp-users@lists.ettus.com>
> Subject: [USRP-users] Re: question of X300 revision
>  
>> On 03/21/2021 04:16 AM, Oscar Pablo wrote:
>> Hi,
>> the public released X300 schematic is revision 1. i want to know if this 
>> revision is the revision in uhd source code. in uhd source code there is 
>> strange words "x300_clock_ctrl is not compatible with revs <= 4 and may    
>> lead to locking issues" so what is the correct source code for revision less 
>> than 4?
>> 
>> 
>> _______________________________________________
>> USRP-users mailing list -- usrp-users@lists.ettus.com
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> My recollection is that hardware rev <= 4 were pre-production and you'll 
> never see them "in the wild".
> 
> 
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