Subversion Repositories usb_phy

USB 1.1 PHY

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Status

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This core is done. It was tested with a USB 1.1 core I have written on

a XESS XCV800 board with a a Philips PDIUSBP11A transceiver.

I have NOT yet tested it with my USB 2.0 Function IP core.

Test Bench

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There is no test bench, period !

Please don't email me asking for one, unless you want to hire me to

write one ! As I said above I have tested this core in real hardware and

it works just fine.

Documentation

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Sorry, there is none. I just don't have the time to write it. I have tried

to follow the UTMI interface specification from USB 2.0 with one exception:

I have not added any error checking in the RX PHY, hence the RxError pin

is permanently tide to ground.

'phy_mode' selects between single ended and differential tx_phy output. See

Philips ISP 1105 transceiver data sheet for an explanation of it's MODE

select pin.

Currently this PHY only operates in Full-Speed mode. Required clock frequency

is 48MHz, from which the 12MHz USB transmit and receive clocks are derived.

Misc

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The USB 1.1 Phy Project Page is:

http://www.opencores.org/cores/usb_phy

To find out more about me (Rudolf Usselmann), please visit:

http://www.asics.ws

Directory Structure

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[core_root]

 |

 +-doc                        Documentation

 |

 +-bench--+                   Test Bench

 |        +-verilog           Verilog Sources

 |        +-vhdl              VHDL Sources

 |

 +-rtl----+                   Core RTL Sources

 |        +-verilog           Verilog Sources

 |        +-vhdl              VHDL Sources

 |

 +-sim----+

 |        +-rtl_sim---+       Functional verification Directory

 |        |           +-bin   Makefiles/Run Scripts

 |        |           +-run   Working Directory

 |        |

 |        +-gate_sim--+       Functional & Timing Gate Level

 |                    |       Verification Directory

 |                    +-bin   Makefiles/Run Scripts

 |                    +-run   Working Directory

 |

 +-lint--+                    Lint Directory Tree

 |       +-bin                Makefiles/Run Scripts

 |       +-run                Working Directory

 |       +-log                Linter log & result files

 |

 +-syn---+                    Synthesis Directory Tree

 |       +-bin                Synthesis Scripts

 |       +-run                Working Directory

 |       +-log                Synthesis log files

 |       +-out                Synthesis Output