參數(shù)資料
型號： INTEL82802AB
廠商： Intel Corp.
英文描述： Firmware Hub (FWH)
中文描述： 固件集線器（固件樞紐）
文件頁數(shù)： 23/53頁
文件大小： 471K
代理商： INTEL82802AB
Intel
82802AB/AC Firmware Hub
R
Datasheet
23
4.7.
Block Erase Suspend Command
The Block Erase Suspend command allows block-erase interruption to read or program data in another
block of memory. Once the block erase process starts, writing the Block Erase Suspend command
requests that the WSM suspend the block erase sequence at a predetermined point in the algorithm. The
device outputs status register data when read after the Block Erase Suspend command is written. Polling
the status register can help determine when the block erase operation was suspended.
After a successful suspend, a Read Array command may be written to read data from a block other than
the suspended block. A Program command sequence may also be issued during erase suspend to program
data in blocks other that the block currently in the erase suspend mode.
The other valid commands while block erase is suspended include Read Status Register and Block Erase
Resume. After a Block Erase Resume command is written, the WSM will continue the block erase
process. V
PP
must remain at V
PPH1/2
(the same V
PP
level initially used for the block erase) while block
erase is suspended. RST# or INIT# must also remain at V
IH
. Block erase cannot resume until program
operations initiated during block erase suspend have completed.
4.8.
Program Suspend Comand
The Program Suspend command allows program interruption to read data in other memory locations.
Once the program process starts, writing the Program Suspend command requests that the WSM suspend
the program sequence at a predetermined point in the algorithm. The device continues to output status
register data when read after the Program Suspend command is written. Polling status register bits will
help determine when the program operation was suspended.
After a successful suspend, a Read Array command can be written to read data from locations other than
that which is suspended. The only other valid commands while program is suspended are Read Status
Register and Program Resume. After Program Resume command is written, the WSM will continue the
programming process. V
PP
must remain at V
PPH1/2
(the same V
PP
level used for program) while in program
suspend mode. RST# or INIT# must also remain at V
IH
.
4.9.
Register Based Locking, General-Purpose Input, and
Random Number Generator Registers
A series of registers are available in the Intel FWH to provide software read- and write-locking and GPI
feedback. Also available are the set of control registers for controlling and gathering random numbers.
These registers are accessible through standard addressable memory space (see the following table).
It is recommended that the GPI pins be in the desired state before FWH4 is brought low for the
beginning of the next bus cycle, and remain in that state until the end of the read.
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