Case study: Inside structure of PON equipment

Case study: Inside structure of PON equipment

  Brief statement:  All the PON equipment pictures, shell interfaces and commands example (below) are collected from Internet, which only used as studying purpose.

Server boards in data center

  First of all, let’s take an inside look at Facebook’s first built-from-scratch data center.

Facebook server board

Facebook server board

  Facebook ‪engineer‬ JoshuaCrass holds up a server board he and his team installed at the new data center. The exact number of dual-socket boards is proprietary, but it’s many tens of thousands.

PON equipment boards

  In previous FOT Blog series: “A guide to choose PON equipment”, we have introduced the basic “specifications” idea, also have shared “PON architecture and Key technologies/Card introduction/OLT parameter” etc…

Main PON and  fiber Telecom Chipsets supplier

Main PON and fiber Telecom Chipsets supplier

  And now here we will follow this topic and discussion again, with some detail Inside structure of PON devices. Let’s take an example of the main brand PON modules in the market – “4LAN+2VoIP+WiFi_PON CPE”, as the following portfolios, to display the inside structures detail.

Case study: Inside structure of PON equipment

Case study: Inside structure of PON equipment

Brief PON software information

BusyBox v1.01 (2013.11.06-21:23+0000) Built-in shell (ash)
Enter ‘help’ for a list of built-in commands.
/ # cat /proc/cpuinfo
system type : 4LAN+2VoIP+WiFi_PON CPE
processor : 0
cpu model : Broadcom4350 V8.0
BogoMIPS : 399.36
wait instruction : yes
microsecond timers : yes
tlb_entries : 32
extra interrupt vector : no
hardware watchpoint : no
ASEs implemented :
shadow register sets : 1
core : 0
VCED exceptions : not available
VCEI exceptions : not available
unaligned exceptions : 1416391
processor : 1
cpu model : Broadcom4350 V8.0
BogoMIPS : 402.43
wait instruction : yes
microsecond timers : yes
tlb_entries : 32
extra interrupt vector : no
hardware watchpoint : no
ASEs implemented :
shadow register sets : 1
core : 0
VCED exceptions : not available
VCEI exceptions : not available
unaligned exceptions : 1416391
/ #

Detail PON hardware information

  Motherboard portfolio, nice fins design, a better solution for heating.

Motherboard portfolio

Motherboard portfolio

  2.4G wifi chip BCM43217kmlg.

2.4G wifi chip BCM43217kmlg

2.4G wifi chip BCM43217kmlg

  Optical modules, GPON/EPON Universal.

Optical modules ( GPON/EPON Universal)

Optical modules ( GPON/EPON Universal)

  Voice processing circuit, Digital Signal Processor (DSP).

Voice processing circuit

Voice processing circuit

  ROM portfolio,Spansion ML NAND Flash Memory solution,SLC Flash,1 Gbit=128MByte.

ROM portfolio

ROM portfolio

  RAM portfolio, SK hynix memory solutions: DDR2 H5PS5162GFR.

RAM portfolio

RAM portfolio

PS:512Mbit = 64MByte RAM

 

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