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FW82443BX 데이터시트 PDF




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부품번호 FW82443BX 기능
기능 Host Bridge Controller
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FW82443BX 데이터시트, 핀배열, 회로
www.DataSheInett4eUl.®com440BX AGPset:
m82443BX Host Bridge/Controller
.coDatasheet
April 1998
www.DataSheet4Uwww.DataSheet4U.comOrder Number: 290633-001




FW82443BX pdf, 반도체, 판매, 대치품
The I/O subsystem portion of the Intel® 440BX AGPset platform is based on the 82371EB
(PIIX4E), a highly integrated version of the Intel’s PCI-ISA bridge family. The Intel® 440BX
AGPset is ideal for the Mobile AGPset Pentium II processor platforms; providing full support
for all system suspend modes and segmented power planes.
Intel 82443BX Simplified Block Diagram
A[31:3]#
ADS#
BPRI#
BNR#
CPURST#
DBSY#
DEFER#
HD[63:0]#
HIT#
HITM#
HLOCK#
HREQ[4:0]#
HTRDY#
DRDY#
RS[2:0]#
RASA[5:0]/CSA[5:0]#
RASB[5:0]/CSB[5:0]#
CKE[3:2]/CSA[7:6]#
CKE[5:4]/CSB[7:6]#
CASA[7:0]/DQMA[7:0]
CASB[5,1]/DQMB[5,1]
GCKE/CKE1
SRAS[B,A]#
CKE0/FENA
SCAS[B,A]#
MAA[13:0]
MAB[13,12#,11#,10,9#:0#]
WEA#
WEB#
MD[63:0]
MECC[7:0]
HCLKIN
PCLKIN
GTLREF[B:A]
AGPREF
VTT[B:A]
REF5V
PCIRST#
CRESET#
BREQ0#
TESTIN#
GCLKO
GCLKIN
DCLKO
DCLKWR
Host
Interface
DRAM
Interface
Clocks,
Reset,
Test,
and
Misc.
PCI Bus
Interface
(PCI #0)
AGP
Interface
Power
Mgnt
AD[31:0]
C/BE[3:0]#
FRAME#
TRDY#
IRDY#
DEVSEL#
PAR
SERR#
PLOCK#
STOP#
PHOLD#
PHLDA#
WSC#
PREQ0#
PREQ[4:1]#
PGNT0#
PGNT[4:1]#
GAD[31:0]
GC/BE[3:0]#
GFRAME#
GIRDY#
GTRDY#
GSTOP#
GDEVSEL#
GREQ#
GGNT#
GPAR
PIPE#
SBA[7:0]
RBF#
STOP#
ST[2:0]
ADSTB_A
ADSTB_B
SBSTB
CLKRUN#
SUSTAT#
BXPWROK
BX_BLK.VSD
iv 82443BX Host Bridge Datasheet

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FW82443BX 전자부품, 판매, 대치품
4 Functional Description ...............................................................................................4-1
4.1 System Address Map....................................................................................4-1
4.1.1 Memory Address Ranges ................................................................4-2
4.1.1.1 Compatibility Area...............................................................4-3
4.1.1.2 Extended Memory Area ......................................................4-4
4.1.1.3 AGP Memory Address Range.............................................4-6
4.1.1.4 AGP DRAM Graphics Aperture...........................................4-6
4.1.1.5 System Management Mode (SMM) Memory Range...........4-6
4.1.2 Memory Shadowing .........................................................................4-8
4.1.3 I/O Address Space...........................................................................4-8
4.1.4 AGP I/O Address Mapping...............................................................4-8
4.1.5 Decode Rules and Cross-Bridge Address Mapping ........................4-9
4.1.5.1 PCI Interface Decode Rules ...............................................4-9
4.1.5.2 AGP Interface Decode Rules ..............................................4-9
4.1.5.3 Legacy VGA Ranges ........................................................4-10
4.2 Host Interface..............................................................................................4-10
4.2.1 Host Bus Device Support...............................................................4-10
4.2.2 Symmetric Multiprocessor (SMP) Protocol Support.......................4-13
4.2.3 In-Order Queue Pipelining .............................................................4-13
4.2.4 Frame Buffer Memory Support (USWC) ........................................4-13
4.3 DRAM Interface ..........................................................................................4-14
4.3.1 DRAM Organization and Configuration..........................................4-14
4.3.1.1 Configuration Mechanism For DIMMS ..............................4-19
4.3.2 DRAM Address Translation and Decoding ....................................4-20
4.3.3 SDRAMC Register Programming ..................................................4-23
4.3.4 DRAMT Register Programming .....................................................4-23
4.3.5 SDRAM Paging Policy ...................................................................4-24
4.4 PCI Interface ...............................................................................................4-24
4.5 AGP Interface .............................................................................................4-24
4.6 Data Integrity Support .................................................................................4-25
4.6.1 Data Integrity Mode Selection........................................................4-25
4.6.1.1 Non-ECC (Default Mode of Operation) .............................4-25
4.6.1.2 EC Mode ...........................................................................4-25
4.6.1.3 ECC Mode ........................................................................4-25
4.6.1.4 ECC Generation and Error Detection/Correction
and Reporting ...................................................................4-26
4.6.1.5 Optimum ECC Coverage ..................................................4-27
4.6.2 DRAM ECC Error Signaling Mechanism........................................4-27
4.6.3 CPU Bus Integrity ..........................................................................4-27
4.6.4 PCI Bus Integrity ............................................................................4-27
4.7 System Clocking .........................................................................................4-28
4.8 Power Management....................................................................................4-28
4.8.1 Overview ........................................................................................4-28
4.8.2 82443BX Reset..............................................................................4-32
4.8.2.1 CPU Reset ........................................................................4-33
4.8.2.2 CPU Clock Ratio Straps....................................................4-33
4.8.2.3 82443BX Straps ................................................................4-34
4.8.3 Suspend Resume ..........................................................................4-34
4.8.3.1 Suspend Resume protocols ..............................................4-34
4.8.3.2 Suspend Refresh ..............................................................4-34
4.8.4 Clock Control Functions .................................................................4-35
4.8.5 SDRAM Power Down Mode...........................................................4-36
82443BX Host Bridge Datasheet
vii

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부품번호상세설명 및 기능제조사
FW82443BX

Host Bridge Controller

Intel
Intel

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