n82802 Intel Corporation, n82802 Datasheet - Page 31

• Manufacturer Part Number: n82802
• Description: Firmware Hub Fwh
• Manufacturer: Intel Corporation

4.12.
Datasheet
Figure 6.
R
CUI Automation Flowcharts
Automated Block Erase Flowchart
Full Status Check Procedure
Read Status Register
Check if Desired
Data (See Above)
Block Address
Block Address
Read Status
Block Erase
Write D0h,
Full Status
Write 20h,
Complete
Block Erase
Successful
Register
SR.4,5 =
SR.7 =
SR.5 =
Start
SR.3 =
0
0
1
0
1
1
1
Command Sequence
V
PP
Block Erase
Range Error
Error
Error
Operation
Repeat for subsequent block erasures.
Full status check can be done after each block erase, or after a
SR.5, SR.4, and SR.3 are only cleared by the Clear Status
If error is detected, clear the Status Register before attempting
Write FFh after the last operation to place device in read array mode.
Operation
Standby
sequence of block erasures.
Standby
Write
Write
Standby
Read
Standby
Bus
Register command in cases where multiple blocks are erased
before full status is checked.
retry or other error recovery.
Bus
Erase Setup
Command
Confirm
Erase
Command
Intel
®
82802AB/AC Firmware Hub
Check SR.4,5
Both 1 = Command Sequence Error
Check SR.5
1 = Block Erase Error
Check SR.3
1 = V
Status Register Data
Data = 20h
Addr = Within Block to Be Erased
Data = D0h
Addr = Within Block to Be Erased
Check SR.7
1 = WSM Ready
0 = WSM Busy
PP
Error Detect
Comments
Comments
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