LU82551IT 860607 Intel, LU82551IT 860607 Datasheet - Page 24
LU82551IT 860607
Manufacturer Part Number
LU82551IT 860607
Description
Manufacturer
Intel
Datasheet
1.LU82551IT_860607.pdf
(102 pages)
Specifications of LU82551IT 860607
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (min)
3V
Operating Supply Voltage (max)
3.6V
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
196
Lead Free Status / RoHS Status
Compliant
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82551IT — Networking Silicon
18
Figure 3. CSR I/O 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
82551IT with valid data on each data access immediately after asserting IRDY#. The 82551IT
controls the TRDY# signal and asserts it from the data access. The 82551IT allows the CPU to
issue only one I/O write cycle to the Control/Status Registers, generating a disconnect by asserting
the STOP# signal. This is true for both memory mapped and I/O mapped accesses.
CLK
FRAME#
AD
C/BE#
IRDY#
TRDY#
DEVSEL#
STOP#
1
I/O WR
ADDR
2
3
DATA
BE#
4
5
6
7
8
9
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