GD82551ER S L66X Intel, GD82551ER S L66X Datasheet - Page 28

• Manufacturer Part Number: GD82551ER S L66X
• Manufacturer: Intel

Specifications of GD82551ER S L66X

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Industrial
• Package Type: BGA
• Mounting: Surface Mount
• Pin Count: 196
• Lead Free Status / Rohs Status: Not Compliant

82551ER — Networking Silicon
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Figure 5. Flash Buffer Write Cycle
Write Accesses: The CPU, as the initiator, drives the address lines AD[31:0], the command and
byte enable lines C/BE#[3:0] and the control lines IRDY# and FRAME#. It also provides the
82551ER with valid data immediately after asserting IRDY#. The 82551ER controls the TRDY#
signal and de-asserts it for a certain number of clocks until valid data is written to the Flash buffer.
By asserting TRDY#, the 82551ER signals the CPU that the current data access has completed.
Flash buffer write accesses can be byte length only.
CLK
FRAME#
AD
C/BE#
IRDY#
TRDY#
DEVSEL#
STOP#
MEM WR
ADDR
DATA
BE#
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