GD82551QM INTEL [Intel Corporation], GD82551QM Datasheet - Page 26

• Manufacturer Part Number: GD82551QM
• Description: Fast Ethernet Multifunction PCI/CardBus Controller
• Manufacturer: INTEL [Intel Corporation]

82551QM — Networking Silicon
20
Figure 5. Flash Buffer Write Cycle
Write Accesses: The CPU, as the initiator, drives the address lines
byte enable lines
82551QM with valid data immediately after asserting
signal and de-asserts it for a certain number of clocks until valid data is written to the Flash buffer.
By asserting
Flash buffer write accesses can be byte length only.
CLK
FRAME#
AD
C/BE#
IRDY#
TRDY#
DEVSEL#
STOP#
TRDY#
C/BE#[3:0] and
, the 82551QM signals the CPU that the current data access has completed.
MEM WR
ADDR
the control lines
DATA
BE#
IRDY#
IRDY#
and
FRAME#
. The 82551QM controls the
AD[31:0],
. It also provides the
the command and
Datasheet
TRDY#