LU82551IT INTEL [Intel Corporation], LU82551IT Datasheet - Page 23
LU82551IT
Manufacturer Part Number
LU82551IT
Description
Fast Ethernet PCI Controller
Manufacturer
INTEL [Intel Corporation]
Datasheet
1.LU82551IT.pdf
(102 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LU82551IT
Manufacturer:
YCL
Quantity:
1 000
- Current page: 23 of 102
- Download datasheet (737Kb)
Datasheet
Figure 2. CSR I/O Read Cycle
5.2.1.1.1 Control/Status Register (CSR) Accesses
The 82551IT supports zero wait state single cycle memory or I/O mapped accesses to its CSR
space. Separate BARs request 4 KB of memory space and 64 bytes of I/O space to accomplish
these accesses. The 82551IT provides 4 valid KB of CSR space, which include the following
elements:
The following figures show CSR zero wait state I/O read and write cycles. In the case of accessing
the Control/Status Registers, the CPU is the initiator and the 82551IT is the target of the
transaction.
Read Accesses: The CPU, as the initiator, drives address lines AD[31:0], the command and byte
enable lines C/BE#[3:0] and the control lines IRDY# and FRAME#. As a slave, the 82551IT
controls the TRDY# signal and provides valid data on each data access. The 82551IT allows the
CPU to issue only one read cycle when it accesses the Control/Status Registers, generating a
disconnect by asserting the STOP# signal. The CPU can insert wait states by de-asserting IRDY#
when it is not ready.
•
•
•
•
•
•
System Control Block (SCB) registers
PORT register
Flash control register
EEPROM control register
MDI control register
Flow control registers
CLK
FRAME#
AD
C/BE#
IRDY#
TRDY#
DEVSEL#
STOP#
1
I/O RD
ADDR
2
3
BE#
DATA
4
5
6
Networking Silicon — 82551IT
7
8
9
17
Related parts for LU82551IT
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Microprocessor: Intel Celeron M Processor 320 and Ultra Low Voltage Intel Celeron M Processor at 600MHz
Manufacturer:
Intel Corporation
Part Number:
Description:
Intel 82550 Fast Ethernet Multifunction PCI/CardBus Controller
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 120 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 120 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 64 Mbit. Access speed 150 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 100 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
DA28F640J5A-1505 Volt Intel StrataFlash Memory
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
5 Volt Intel StrataFlash?? Memory
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
5 Volt Intel StrataFlash?? Memory
Manufacturer:
Intel Corporation
Part Number:
Description:
Intel 6300ESB I/O Controller Hub
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel 82801DB I/O Controller Hub (ICH4), Pb-Free SLI
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel 82801FB I/O Controller Hub (ICH6)
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel Strataflash Memory28F128J3 28F640J3 28F320J3
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Controllers, Intel 430TX PCIset: 82439TX System Controller (MTXC)
Manufacturer:
Intel Corporation