NH82801HBM S LB9A Intel, NH82801HBM S LB9A Datasheet - Page 248
NH82801HBM S LB9A
Manufacturer Part Number
NH82801HBM S LB9A
Description
CONTROLLER HUB, ICH8M, I/O, 82801HBM
Manufacturer
Intel
Datasheet
1.NH82801HBM_S_LB9A.pdf
(890 pages)
Specifications of NH82801HBM S LB9A
Power Dissipation Pd
2.4W
Digital Ic Case Style
BGA
No. Of Pins
676
Pci Bus Type
I/O Controller Hub
Pci Express Base Spec
PCIe 1.1
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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5.23.3.2
Table 98.
5.23.3.3
5.23.3.4
Note:
248
Recommended Command Set and Opcodes
The following table lists recommended opcodes for serial flash commands. Using a
command specified below, with the associated opcode, will allow software developers
to streamline their code and will aid in minimizing latencies.
Recommended Command and Opcode Associations
JEDEC Device Identification
Since each serial flash device may have unique capabilities and commands, the JEDEC
ID is the necessary mechanism for identifying the device so the uniqueness of the
device can be comprehended by the controller (master). The JEDEC ID uses the opcode
9Fh and a specified implementation and usage model. This JEDEC Standard
Manufacturer and Device ID read method is defined in Standard JESD21-C, PRN03-NV1
and is available on the JEDEC website: www.jedec.org.
Multiple Page Write Usage Model
The system BIOS and Intel
require that the serial flash device support multiple writes (minimum of 512 writes) to
a page (256 bytes) without requiring a preceding erase command. BIOS commonly
uses capabilities such as counters that are typically implemented by using byte writes
to ‘increment’ the bits within a page that have been designated as the counter. The
Intel AMT firmware usage model requires the capability for multiple data updates within
any given page. These data updates occur via byte writes without executing a
preceding erase to the given page. Both the BIOS and Intel AMT firmware multiple
page write usage models apply to sequential and non-sequential data writes.
This usage model requirement is based on any given bit only being written once from a
‘1’ to a ‘0’ without requiring the preceding erase. An erase would be required to change
bits back to the ‘1’ state.
Full Chip Erase
Commands
OPCODE
C7h
®
Active Management Technology firmware usage models
Notes
Intel
®
Functional Description
ICH8 Family Datasheet
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