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Re: ipx420 resources

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  • dyoung8888
    Thanks to Allan: http://groups.yahoo.com/group/nslu2-linux/message/428 and other messages but, the device side usb port is: USB_DNEG ball E21 connected to R130
    Message 1 of 2 , Aug 30, 2004
      Thanks to Allan:

      http://groups.yahoo.com/group/nslu2-linux/message/428
      and other messages

      but, the device side usb port is:
      USB_DNEG ball E21 connected to R130
      USB_DPOS ball F20 connected to R131

      and the jtag port is:
      TDI ball AE24 connected to R133
      TMS ball AF25 connected to R132
      TCK ball AF26 connected to R134/R138
      TDO ball AD23 connected to R137
      TRSTN ball AC22 connected to R135

      rxdata1 ball Y21 connected to right side of R128
      rts1_n ball AC25 n/c
      cts1_n ball AB24 connected to left side of R142
      txdata1 ball AA22 n/c

      Serial 2 can be connected for RX only.

      --- In nslu2-linux@yahoogroups.com, "jkpeters_37" <johnandtina@b...>
      wrote:
      > I know some tracing of the PCB have occurred. Did we find out if
      the
      > second serial port and/or on-chip USB 1.1 port are connected
      anywhere?
      >
      > Also, reading a bit about the ixp420, it sounds like that second
      > unused NPE can be used as a DMA engine. Thus, it seems it should
      be
      > able to do DMA between the PCI-based USB 2.0 and SDRAM. Does
      anyone
      > know if that's the case? (I'd hate to see a whole co-processor go
      to
      > waste.)
      >
      > jkp
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