N900 Hardware USB PHY: Difference between revisions
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The USB PHY is the physical layer controller for the USB port. | The USB PHY is the physical layer controller for the USB port. | ||
=Hardware= | |||
==Hardware== | |||
The [http://www.nxp.com/ NXP] isp1707a is used as the USB PHY chip. [http://www.spinics.net/lists/linux-usb/msg25167.html]. This rights to this part have been bought by ST-Ericson and some information is [http://www.stericsson.com/sales_marketing_resources/USB_transceiverBR_1.pdf available in a brief marketing sheet]. | The [http://www.nxp.com/ NXP] isp1707a is used as the USB PHY chip. [http://www.spinics.net/lists/linux-usb/msg25167.html]. This rights to this part have been bought by ST-Ericson and some information is [http://www.stericsson.com/sales_marketing_resources/USB_transceiverBR_1.pdf available in a brief marketing sheet]. | ||
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A reasonably similar chip (compare chips: [http://www.ebv.com/fileadmin/products/Products/ST-Ericsson/Flyer_USB_Transceivers_1.pdf]) is the 1704 which has a datasheet [http://www.stericsson.com/sales_marketing_resources/CD00222700.pdf] | A reasonably similar chip (compare chips: [http://www.ebv.com/fileadmin/products/Products/ST-Ericsson/Flyer_USB_Transceivers_1.pdf]) is the 1704 which has a datasheet [http://www.stericsson.com/sales_marketing_resources/CD00222700.pdf] | ||
It is connected to the [[N900 Hardware Battery Charger|battery charger chip]] and the [[N900 | It is connected to the [[N900 Hardware Battery Charger|battery charger chip]] and the [[N900 CPU]]. | ||
==Software== | |||
The USB PHY is only dealt with by the kernel. | The USB PHY is only dealt with by the kernel. | ||
[[Category:N900 Hardware]] | [[Category:N900 Hardware]] | ||
Revision as of 14:25, 16 June 2010
The USB PHY is the physical layer controller for the USB port.
Hardware
The NXP isp1707a is used as the USB PHY chip. [1]. This rights to this part have been bought by ST-Ericson and some information is available in a brief marketing sheet.
There is no published datasheet for this chip. It may be available under another name.
A reasonably similar chip (compare chips: [2]) is the 1704 which has a datasheet [3]
It is connected to the battery charger chip and the N900 CPU.
Software
The USB PHY is only dealt with by the kernel.
