N900 Hardware USB PHY

Latest revision as of 04:04, 21 August 2018

The USB PHY is the physical layer controller for the USB port.

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]

Another equivalent chip seems to be the FUSB2500 - see [4]

It is connected to the battery charger chip and the N900 CPU.

The USB PHY is only dealt with by the kernel.

@@ Line 1: / Line 1: @@
 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].
@@ Line 8: / Line 9: @@
 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 Hardware CPU]].
+Another equivalent chip seems to be the [https://www.startpage.com/do/search?query=FUSB2500 FUSB2500] - see [http://talk.maemo.org/showthread.php?p=643577#post643577]
+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.
-=Software=
 [[Category:N900 Hardware]]