HP XU700 manual FirmWare Hub 82802AB, Following table shows the available FWH features

2System Board FirmWare Hub (82802AB)

FirmWare Hub (82802AB)

The FWH (also known as flash memory) is connected to the LPC bus. It contains 4 Mbit (512 kB) of flash memory.

The hardware features of the FWH include: a Random Number Generator (RNG), five General Purpose Inputs (GPI), register-based block locking and hardware-based locking. An integrated combination of logic features and non-volatile memory enables better protection for the storage and update of system code and data, adds flexibility through additional GPIs, and allows for quicker introduction of security/manageability features.

The following table shows the available FWH features.

	Feature		Feature
•	Platform Compatibility:	•	Two Configurable Interfaces:
	❒ Enables security-enhanced platform infrastructure.		❒ FirmWare Hub interface for system operation.
	❒ Part of the Intel I840 chipset.		❒ Address/Address Multiplexed (A/A Mux) interface.
• FirmWare Hub Interface Mode:		• 4 Mbits of Flash Memory for system code/data non-volatile
	❒ Five signal communication interface supporting x8 reads and		storage:
	writes.		❒ Symmetrically blocked, 64 Kbyte memory sections.
	❒ Register-based read and write protection for each code/data		❒ Automated byte program and block erase through an
	storage blocks.		integrated WSM (Write State Machine).
	❒ Five additional GPIs for system design and flexibility.
	❒ A hardware RNG (Random Number Generator).
	❒ Integrated CUI (Command User Interface) for requesting
	access to locking, programming and erasing options. It also
	handles requests for data residing in status, ID and block lock
	registers.
	❒ Operates with 33 MHz PCI clock and 3.3 V input/output.
• A/A Mux Interface/Mode, supporting:		•	Power Supply Specifications:
	❒ 11-pin multiplexed address and 8-pin data I/O interface.		❒ Vcc: 3.3 V +/- 0.3 V.
	❒ Fast on-board or out-of-system programming.		❒ Vpp: 3.3 V and 12 V for fast programming, 80 ns.
•	Industry Standard Packages:	• Case Temperature Operating Range.
	❒ 40L TSOP or 32L PLCC.

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