參數(shù)資料
型號(hào)： 82801E
廠商： INTEL CORP
元件分類(lèi)： 外設(shè)及接口
英文描述： Intel 82801E Communications I/O Controller Hub (C-ICH)
中文描述： MULTIFUNCTION PERIPHERAL, PBGA421
封裝： BGA-421
文件頁(yè)數(shù)： 25/84頁(yè)
文件大小： 1196K
代理商： 82801E
Intel
82801E C-ICH
Advance Information Datasheet
25
3.0
Signal Descriptions
This section provides a detailed description of each signal. The signals are arranged in functional
groups according to their associated interface.
The “#” symbol at the end of the signal name indicates that the active, or asserted state occurs when
the signal is at a low voltage level. When “#” is not present, the signal is asserted when at the high
voltage level.
The following notations are used to describe the signal type:
I
Input pin
O
Output pin
OD
Open drain output pin.
I/O
Bidirectional input/output pin.
3.1
Alphabetical Signal Reference
Table 6. 82801E C-ICH Signal Description (Sheet 1 of 11)
Signal
Type
Description
A20GATE
I
A20 Gate:
This signal is from the keyboard controller. It acts as an alternative
method to force the A20M# signal active. A20GATE eliminates the need for
the external OR gate needed with various other PCIsets.
A20M#
O
Mask A20:
A20M# goes active based on setting the appropriate bit in the
Port 92h register, or based on the A20GATE signal.
Speed Strap:
During the reset sequence, 82801E C-ICH drives A20M# high
if the corresponding bit is set in the FREQ_STRP register.
AD[31:0]
I/O
PCI Address/Data:
AD[31:0] is a multiplexed address and data bus. During
the first clock of a transaction, AD[31:0] contain a physical address (32 bits).
During subsequent clocks, AD[31:0] contain data. The 82801E C-ICH drives
all 0s on AD[31:0] during the address phase of all PCI Special Cycles.
APICCLK
I
APIC Clock:
The APIC clock runs at 33.333 MHz.
APICD[1:0]
I/OD
APIC Data:
These bidirectional open drain signals are used to send and
receive data over the APIC bus. As inputs, the data is valid on the rising edge
of APICCLK. As outputs, new data is driven from the rising edge of the
APICCLK.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
82801FB 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:Intel I/O Controller Hub 6 (ICH6) Family
82801FBM 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:Intel I/O Controller Hub 6 (ICH6) Family
82801FR 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:Intel I/O Controller Hub 6 (ICH6) Family
82801GBICH7 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:Intel I/O Controller Hub 7
82801GBMICH7-M 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:Intel I/O Controller Hub 7
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