82802AC datasheet(4/53 Pages) INTEL

4 / 53 page

Intel

® 82802AB/AC Firmware Hub

Datasheet

5.2.

Operating Conditions .....................................................................................................33

5.2.1.

Interface DC Input/Output Specifications ....................................................34

5.2.2.

Interface AC Input/Output Specifications.....................................................36

5.2.3.

Intel FWH Interface AC Timing Specifications ............................................37

5.2.3.1.

Clock Specification..........................................................................37

5.2.3.2.

Signal Timing Parameters...............................................................38

5.3.

Block Programming Times ............................................................................................40

5.4.

Intel Firmware Hub Interface..........................................................................................40

5.4.1.

Intel FWH Interface Cycles..........................................................................40

5.4.1.1.

Read Cycle Sequence.....................................................................40

5.4.1.2.

Single-Byte Read Waveforms.........................................................42

5.4.1.3.

Write Cycle Sequence.....................................................................42

5.4.1.4.

Write Waveforms ............................................................................43

5.4.1.5.

Response To Invalid Fields.............................................................43

5.4.1.6.

Abort Operations .............................................................................44

5.4.1.7.

Intel FWH Cycle Timing Information ...............................................44

5.5.

RNG Parameters ...........................................................................................................45

PROM Programming Specifications ...........................................................................................47

6.1.

Programming (“A/A Mux”) Mode Operation ...................................................................47

6.2.

Bus Operation ................................................................................................................47

6.2.1.

Output Disable/Enable.................................................................................47

6.2.2.

Row/Column Addresses ..............................................................................47

6.2.3.

Read Operation ...........................................................................................47

6.2.4.

Read Identifier Codes Operation .................................................................48

6.2.5.

Write Operation ...........................................................................................48

6.3.

Command Definitions ....................................................................................................48

6.4.

Electrical Characteristics in A/A Mux Mode ...................................................................48

6.4.1.

Reset Operations.........................................................................................49

6.4.2.

AC Waveforms for Reset Operations..........................................................49

6.4.3.

A/A Mux Read-Only Operations

(1,3).............................................................49

6.4.4.

A/A Mux Write Operations

(1,2) .....................................................................51

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