參數(shù)資料
型號(hào)： 82557
廠商： Intel Corp.
英文描述： Fast Ethernet PCI Bus Controller(快速以太網(wǎng) PCI總線控制器)
中文描述： 快速以太網(wǎng)PCI總線控制器（快速以太網(wǎng)的PCI總線控制器）
文件頁(yè)數(shù)： 10/57頁(yè)
文件大?。?/td> 601K
代理商： 82557
INTEL 82557 FAST ETHERNET PCI BUS CONTROLLER
10
Symbol
Pin
Type
Name and Function
DEVSEL#
56
STS
Device Select#, when actively driven by the 82557 as a slave, indicates to
the bus master that it has decoded its address as the target of the current
access. As an input, DEVSEL# indicates whether any device on the bus has
been selected.
2.1.4.
ERROR REPORTING PINS
Symbol
Pin
Type
Name and Function
SERR#
60
OD
System Error# is used by the 82557 to report address parity errors. SERR# is
open drain and is actively driven for a single PCI clock when reporting the
error.
PERR#
61
STS
Parity Error# is used by the 82557 for reporting data parity errors during all
PCI transactions except a Special Cycle. The PERR# pin is sustained tri-
state and must be driven active by the 82557 after receiving data two clocks
following the data when a data parity error is detected. The minimum duration
of PERR# is one clock for each data phase that a data parity error is
detected.
2.1.5.
INTERRUPT PIN
Symbol
Pin
Type
Name and Function
INTA#
18
OD
Interrupt A# is used to request an interrupt by the 82557. This is an active
low, level-triggered interrupt signal.
2.1.6.
ARBITRATION PINS
Symbol
Pin
Type
Name and Function
REQ#
15
TS
Request# indicates to the arbiter that the 82557 desires use of the bus. This
is a point-to-point signal. Every master has its own REQ#.
GNT#
14
IN
Grant# indicates to the 82557 that access to the bus has been granted. This
is a point to point signal.
2.1.7.
SYSTEM PINS
Symbol
Pin
Type
Name and Function
CLK
25
IN
Clock provides timing for all transactions on the PCI bus and is an input to
the 82557. All other PCI signals, except RST# and the INT# lines are
sampled on the rising edge of CLK and all other timing parameters are defined
with respect to this edge.
相關(guān)PDF資料
PDF描述
82559 Fast Ethernet Multifunction PCI/CARD bus controller(快速以太網(wǎng)多功能PCI/CARD 總線控制器)
8255A-5 PROGRAMMABLE PERIPHEAL INTERFACE
8255A IC LOGIC 3257 4-BIT 1-OF-2 FET MULTIPLEXER/DEMULTIPLEXER -40+85C SSOP-16 - OBSOLETE
8255A Programmable Peripheral Interface iAPX86 Family
8255A-5 12-Bit, 2.7 V to 5.25 V, 1.5 MSPS Low Power ADC; Package: SOIC - Wide; No of Pins: 24; Temperature Range: Industrial
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
8255702-025 制造商:ITT Interconnect Solutions 功能描述:NASA CONNECTOR - Bulk
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8255702-096 制造商:ITT Interconnect Solutions 功能描述:NASA CONNECTOR - Bulk
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