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vamsi_addagada
Joined: 05 Jul 2007
Posts: 132
Helped: 3
Location: bangalore
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 10 Jul 2007 8:17 difference between usb and pci |
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| PLZ TELL ME THAT QUESTION ANSWER
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shiv_emf
Joined: 31 Aug 2005
Posts: 641
Helped: 16
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10 Jul 2007 8:40 i want different between USB and PCI |
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USB universal serial BUS .. which works on 4 lines (v+, v-,d+,d-) ...devices r connected to this port n it carries out operations according to host controller !!
PCI (peripheral component interconnect) is different bus architecture! many devices r connected to PCI bus n depending on priority n request to use bus by device... transaction takes place...
bus width can either 32bit or 64bit
Shiv
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akshay.raoy
Joined: 28 Jun 2007
Posts: 23
Helped: 2
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17 Jul 2007 6:20 Re: i want different between USB and PCI |
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u can use this material to more about USB.....
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thamarai
Joined: 09 Mar 2007
Posts: 32
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17 Jul 2007 8:04 i want different between USB and PCI |
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| USB is used serial data Transmission and PCI is used parallel data transmission.
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vinseth
Joined: 06 Jul 2007
Posts: 37
Helped: 3
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17 Jul 2007 8:58 i want different between USB and PCI |
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| I think USB supports hot plugging while PCI doesnt.
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spbshankar
Joined: 11 Apr 2008
Posts: 6
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12 Apr 2008 17:38 Re: i want different between USB and PCI |
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USB- Seridal communication bus
PCI- parallel communication bus
that one is main difference between those
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pra
Joined: 08 Jan 2005
Posts: 98
Helped: 7
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13 Apr 2008 11:41 i want different between USB and PCI |
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hmmm what the above ones said are not exactly correct.....
PCI supports hot plug support too......
all PCI devices are not parallel data transmission... (ex: PCIe uses serial - deserialization at phy layer)
the main differences between USB n PCI is the protocol.
USB control transfers data serially and the protocol is very easy!
where as in PCI, data is transferred like a normal lan traffic(layer based) i mean its in the form of packets!!!
PCI is very useful for very high speed secured traffic like graphics, audio etc..... where the turn around time n the data security is important!
where as USB r mainly useful for external devices!!
PCI has numerous advantages like power management, interrupt handling which are not there in USB!
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durlov
Joined: 18 Jun 2008
Posts: 4
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20 Jun 2008 15:01 i want different between USB and PCI |
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| Keep in mind though that USB supports the Suspended state and the Resume signaling - specific to the bus power. The suspend current is 500uA. Additionally, wrt device/system power management, any such power management scheme can be implemented on top of the USB protocol controlled by the system software.
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Google
AdSense
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20 Jun 2008 15:01 Ads |
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shield
Joined: 09 Sep 2005
Posts: 52
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20 Jun 2008 16:58 i want different between USB and PCI |
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pra's explanation is more reasonable.
The USB3.0 protocol refers to the PCI-e architecture
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pini_1
Joined: 18 Jun 2007
Posts: 288
Helped: 17
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21 Jun 2008 4:58 Re: i want different between USB and PCI |
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USB is a serial bus while PCI is a parallel one. USB is rate is less than 480 bit per second while PCI is up to 33x32 bit per second (assuming operating frequency of 33 Mhz and 32 bits of data).
USB:
http://bknpk.no-ip.biz/usb_1.html
PCI
http://bknpk.no-ip.biz/LEON/leon_1.html
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ljxpjpjljx
Joined: 05 May 2008
Posts: 533
Helped: 12
Location: Shang Hai
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21 Jun 2008 5:21 Re: i want different between USB and PCI |
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| different protocol , different design!
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niravbhatt
Joined: 16 Mar 2009
Posts: 30
Helped: 2
Location: Ahmedabad,India
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28 Oct 2009 7:59 Re: i want different between USB and PCI |
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USB and PCI both are serial bus.
But USB is most complex in design expect while PCI is bit easier to understand and design.
USB controller can act as Host as well as Device.
Concept of EP in USB is internal communication point while in PCI is the different point to point communication.
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