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Author Topic: can 6368 chipset be tweaked?  (Read 13498 times)

snadge

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can 6368 chipset be tweaked?
« on: June 05, 2012, 08:26:35 PM »

can SNRM be set on 6368 chipset does anyone know?

thanks
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Bald_Eagle1

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Re: can 6368 chipset be tweaked?
« Reply #1 on: June 05, 2012, 08:44:04 PM »

I tried a while back on my VDSL2 connection - no go.

"xdslcmd configure --snr" with different values had no effect.
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GigabitEthernet

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Re: can 6368 chipset be tweaked?
« Reply #2 on: June 05, 2012, 08:55:31 PM »

can SNRM be set on 6368 chipset does anyone know?

thanks

Yes, on the DGND3700 (which was a 6368 chipset) for example, putting adslctl configure --snr VALUE set the SNRM. It also worked using xdslcmd configure --snr VALUE on a Huawei HG612 on an ADSL1 (Max) connection.
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snadge

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Re: can 6368 chipset be tweaked?
« Reply #3 on: June 05, 2012, 09:09:55 PM »

ive been told elsehwere you can - it depends on your connection too - of your locked to a profile it will not go above that profile speed regardless of where SNRM is - maybe this is what happened to you BA..?
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Bald_Eagle1

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Re: can 6368 chipset be tweaked?
« Reply #4 on: June 05, 2012, 09:21:52 PM »

ive been told elsehwere you can - it depends on your connection too - of your locked to a profile it will not go above that profile speed regardless of where SNRM is - maybe this is what happened to you BA..?

That's a point. It may well have been during one of my many "stuck" DLM profile periods.

I'll try it again in a few days (I just want to prove my connection's stability over quite a few days first).

I do know the HG612 can hang on at really low SNRM values before resyncing.

I have seen it running at 1dB or less for hours on end in the past.
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snadge

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Re: can 6368 chipset be tweaked?
« Reply #5 on: June 06, 2012, 02:48:06 AM »

the Netgear DGND3700 is a 6368 chipset too - ive read they are 400mhz but one site (WRT Wiki) says its 300Mhz - im sure it was broadcom paper too that said they were 400mhz Viper CPU's ...but cant find it
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burakkucat

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Re: can 6368 chipset be tweaked?
« Reply #6 on: June 06, 2012, 03:18:41 AM »

Here is a Broadcom page on the BCM6368. Is it any help? :-\
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snadge

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Re: can 6368 chipset be tweaked?
« Reply #7 on: June 06, 2012, 04:33:44 PM »

it doesnt say...

but i found this from one of asbo's posts (and ive read other places that say its Dual-Core 400Mhz chip)

Quote
CFE version 1.0.37-102.6 for BCM96368 (32bit,SP,BE)
Build Date: Mon Mar  2 15:45:35 CST 2009 (root@localhost.localdomain)
Copyright (C) 2000-2008 Broadcom Corporation.

Parallel flash device: name MX29LV640BT, id 0x22c9, size 8192KB
CPU type 0x2A031: 400MHz, Bus: 160MHz, Ref: 64MHz
CPU running TP0
Total memory: 33554432 bytes (32MB)
Boot Address 0xb8000000
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burakkucat

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Re: can 6368 chipset be tweaked?
« Reply #8 on: June 06, 2012, 10:40:39 PM »

Looking closely at the first line of the quotation, I see --

Quote
CFE version 1.0.37-102.6 for BCM96368 (32bit,SP,BE)

So BCM96368 or BCM6368, that is the question.  ???
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roseway

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Re: can 6368 chipset be tweaked?
« Reply #9 on: June 06, 2012, 10:57:01 PM »

The same question applies to other chips in the series. Broadcom refers to them without the leading 9, but there are many references to what seems to be the same chip but with the leading 9. I suspect that the 9 is just a packaging version number or something like that.
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  Eric

burakkucat

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Re: can 6368 chipset be tweaked?
« Reply #10 on: June 06, 2012, 11:05:21 PM »

Ah, thank you Eric. That is useful to know.  :)
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guest

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Re: can 6368 chipset be tweaked?
« Reply #11 on: June 07, 2012, 08:35:03 AM »

BCM6368 = chipset
BCM96368 = reference board design

Eg BCM96368MVNGR = VDSL2, 4 x 100Mbps ethernet, 802.11n wireless, USB and two optional FXS ports (VoIP ports)

Hope that clears it up :)
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roseway

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Re: can 6368 chipset be tweaked?
« Reply #12 on: June 07, 2012, 10:50:50 AM »

Thanks rizla :)
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  Eric

guest

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Re: can 6368 chipset be tweaked?
« Reply #13 on: June 07, 2012, 11:48:39 AM »

I think the 9 prefix always designates a reference board design in the Broadcom part numbering scheme. I'm not 100% on that though as I've never seen a definitive part numbering guide from them.

Also worth noting that the BCM6368 chipset has a GigE switch embedded but the reference board design (BCM96368MVNGR) only implements fast ethernet (100Mbps) physical connections.

The reasoning behind that seems to be an EU guideline on power consumption which suggests (haven't done the maths) that you can't have GigE and FXS ports on the board and stay within the power consumption guidelines. Use of FXS ports is virtually unheard of with any UK ISP but they do get used in other EU countries (Teliasonera springs to mind).

Probably shaves a couple of pennies off the hardware cost too. Oh and it will no doubt reduce support costs to ISPs - I wouldn't want to be the one explaining to a clueless end-user why they can't get 1Gbps on the LAN ;)
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snadge

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Re: can 6368 chipset be tweaked?
« Reply #14 on: June 08, 2012, 07:28:31 PM »

thanks Rizla

just too let you all know I got reply from Broadcom who refused to release details about BCM 6328 ..lol

ah well, tried!!
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