55
2 System Board
FirmWare Hub (82802AB)
The FWH includes two hardware interfaces:
•
FirmWare Hub interface.
•
Address/Address Multiplexed (A/A Mux) interface.
The IC (Interface Configuration) pin on the FWH provides the control
between these interfaces. The interface mode needs to be selected prior to
power-up or before return from reset (RST# or INIT# low to high
transition).
The FWH interface works with the ICH2 during system operation, while the
A/A Mux interface is designed as a programming interface for component
pre-programming.
An internal CUI (Command User Interface) serves as the control center
between the FWH and A/A Mux interfaces, and internal operation of the
non-volatile memory. A valid command sequence written to the CUI initiates
device automation. An internal WSM (Write State Machine) automatically
executes the algorithms and timings necessary for block erase and program
operations.
Summary of Contents for Kayak XU700
Page 1: ...hp kayak xu700 Technical Reference Manual ...
Page 6: ...Contents 6 ...
Page 26: ...26 1 System Overview Documentation ...
Page 62: ...62 2 System Board Assigned Device Interrupts ...
Page 80: ...80 4 Mass Storage Devices ...
Page 96: ...96 5 HP BIOS BIOS Addresses ...
Page 121: ...121 7 Connectors and Sockets Ethernet UTP Connector ...