Intel 82802AB overview
82802AB Intel 82802AB Firmware Hub Intel platform compatability— • Enables security-enhanced platform infrastructure; facilitates option to remove ISA. Firm...
Product details
Manufactured byIntel
Product groupFirmware Hubs
Description82802AB
DescriptionIntel 82802AB Firmware Hub
Key FeaturesIntel platform compatability— • Enables security-enhanced platform infrastructure; facilitates option to remove ISA. Firmware hub hardware interface mode— • 5-Signal communication interface supporting byte-at-a-time reads and writes— • 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 Generator (RNG) for enhancing platform security— • Integrated Command User Interface (CUI) for requesting access to locking, programming, and erasing options. The CUT also handles requests for data residing in status, ID, and block-lock registers.— • Operates with 33-MHz PCI clock and 3.3 V I/O. Industry-standard packages (40L TSOP or 32L PLCC) Two configurable interfaces— • Firmware hub interface for platform operation— • Address/Address-Multiplexed (A/A Mux) interface for programming during manufacturing 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) Address/Address-Multiplexed (A/A Mux) interface/mode— • 11-Pin multiplexed address and 8-pin data I/O interface— • Supports fast on-board or out-of-system programming for manufacturing Case temprature operating range Power supply specifications— • Vcc: 3.3 V ± 0.3 V— • Vpp: 3.3 V and 12 V for fast programming, (80 hours maximum)
OverviewThe Intel® 82802 Firmware Hub (FWH) discrete component is compatible with several Intel chipset platforms and a variety of applications. The device operates under the LPC/FWH interface/protocol. The hardware features of this device include a Random Number Generator (RNG), five General-Purpose Inputs (GPIs), register-based block locking, and hardware-based locking. This combination of logic features and non-volatile memory enables better protection for the storage and update of platform code and data, adds platform flexibility through additional GPIs, and allows for quicker introduction of new security/manageability features into current and future platforms. The platform RNG, accessed through the Intel® Security Driver and third-party software, enables security features for the PC platform. See the product features listed previously for a list of more key features that the Intel FWH provides.
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