HP Workstation x1000 hp workstation x1000 - technical reference guide - Page 68

FirmWare Hub 82802AB,

Page 68 highlights

system board FirmWare Hub (82802AB) Feature Feature • Platform compatibility: - Enables security-enhanced platform infrastructure - Part of the Intel 845 chipset • FWH interface mode: - Five signal communication interface supporting 8× reads and writes - Register-based read and write protection for each code/data storage blocks - Hardware write protect pins for the top boot block and the remaining code/data storage blocks - Five additional GPIs for system design and flexibility - A hardware RNG - Integrated Command User Interface (CUI) for requesting access to locking, programming, and erasing options. Also handles requests for data residing in status, ID, and block lock registers. - Operates with 33MHz PCI clock and 3.3V I/O • A/A Mux Interface/Mode, supporting: - 11-pin multiplexed address and 8-pin data I/O interface - Fast on-board or out-of-system programming • Industry standard package: - 32L PLCC • Two configurable interfaces: - FWH interface for system operation - Address/Address Multiplexed (A/A Mux) interface • Four or eight Mbits of flash memory for system code/data nonvolatile storage: - Symmetrically blocked, 64KB memory sections - Available in 8-Mbit (Intel® 82802AC) and 4-Mbit (Intel® 82802AB) densities - Automated byte program and block erase through an integrated Write State Machine (WSM) • Power supply specifications: - Vcc: 3.3V +/- 0.3V - Vpp: 3.3V and 12V for fast programming, 80 hours maximum • Case temperature operating range 68 Chapter 2

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system board
FirmWare Hub (82802AB)
Chapter 2
68
Feature
Feature
Platform compatibility:
Enables security-enhanced platform
infrastructure
Part of the Intel 845 chipset
Two configurable interfaces:
FWH interface for system operation
Address/Address Multiplexed (A/A Mux)
interface
FWH interface mode:
Five signal communication interface
supporting 8
×
reads and writes
Register-based read and write protection
for each code/data storage blocks
Hardware write protect pins for the top
boot block and the remaining code/data
storage blocks
Five additional GPIs for system design
and flexibility
A hardware RNG
Integrated Command User Interface
(CUI) for requesting access to locking,
programming, and erasing options. Also
handles requests for data residing in
status, ID, and block lock registers.
Operates with 33MHz PCI clock and 3.3V
I/O
Four or eight Mbits of flash memory for
system code/data nonvolatile storage:
Symmetrically blocked, 64KB memory
sections
Available in 8-Mbit (Intel® 82802AC) and
4-Mbit (Intel® 82802AB) densities
Automated byte program and block erase
through an integrated Write State
Machine (WSM)
A/A Mux Interface/Mode, supporting:
11-pin multiplexed address and 8-pin
data I/O interface
Fast on-board or out-of-system
programming
Power supply specifications:
Vcc: 3.3V +/- 0.3V
Vpp: 3.3V and 12V for fast programming,
80 hours maximum
Industry standard package:
32L PLCC
Case temperature operating range