82802AB Datasheet, PDF (7/53 Pages) Intel Corporation – Firmware Hub (FWH)

Intel^® 82802AB/AC Firmware Hub
R
Intel^® 82802AB/AC Firmware Hub
(FWH)
Product Features
§ Intel platform compatability
§ Two configurable interfaces
 Enables security-enhanced platform
 Firmware hub interface for platform
infrastructure; facilitates option to remove ISA.
operation
§ Firmware hub hardware interface mode
 5-Signal communication interface supporting
byte-at-a-time reads and writes
 Address/Address-Multiplexed (A/A Mux)
interface for programming during
manufacturing
 Register-based read and write protection for
each code/data storage block
 Hardware write protect pins for the top boot
block and the remaining code/data storage
blocks
 5 Additional GPIs for platform design
flexibility
 Contains a hardware Random Number
§ 4 or 8 Mbits of flash memory for platform
code/data nonvolatile storage
 Symmetrically blocked, 64-KB memory
sections
 Available in 8-Mbit (Intel^® 82802AC) and 4-
Mbit (Intel^® 82802AB) densities
 Automated byte program and block erase via
an integrated Write State Machine (WSM)
Generator (RNG) for enhancing platform
§ Address/Address-Multiplexed (A/A Mux)
security
interface/mode
 Integrated Command User Interface (CUI) for
 11-Pin multiplexed address and 8-pin data
requesting access to locking, programming, and
I/O interface
erasing options. The CUI also handles requests ^{ Supports fast on-board or out-of-system}
for data residing in status, ID, and block-lock
programming for manufacturing
registers.
§ Case temprature operating range
 Operates with 33-MHz PCI clock and
§ Power supply specifications
3.3 V I/O.
 Vcc: 3.3 V ± 0.3 V
§ Industry-standard packages
(40L TSOP or 32L PLCC)
 Vpp: 3.3 V and 12 V for fast programming,
(80 hours maximum)
The Intel^® 82802 (FWH) firmware hub may contain design defects or errors known as errata that may cause the products to
deviate from published specifications. Current characterized errata are available upon request.
Datasheet
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