參數(shù)資料
型號: celeron 700
廠商: Intel Corp.
英文描述: Intel Celeron Processor Up To 700 MHz(頻率達700MHz的INTEL Celeron 處理器)
中文描述: 英特爾賽揚處理器高達700兆赫(頻率達700MHz的英特爾賽揚處理器的)
文件頁數(shù): 114/118頁
文件大小: 990K
代理商: CELERON 700
114
Datasheet
Intel
Celeron Processor up to 700 MHz
LOCK#
I/O
The LOCK# signal indicates to the system that a transaction must occur atomically.
This signal must connect the appropriate pins of all system bus agents. For a locked
sequence of transactions, LOCK# is asserted from the beginning of the first
transaction end of the last transaction.
When the priority agent asserts BPRI# to arbitrate for ownership of the system bus,
it will wait until it observes LOCK# deasserted. This enables symmetric agents to
retain ownership of the system bus throughout the bus locked operation and ensure
the atomicity of lock.
PICCLK
I
The PICCLK (APIC Clock) signal is an input clock to the processor and core logic or
I/O APIC which is required for operation of all processors, core logic, and I/O APIC
components on the APIC bus.
PICD[1:0]
I/O
The PICD[1:0] (APIC Data) signals are used for bidirectional serial message
passing on the APIC bus, and must connect the appropriate pins of the Intel Celeron
processor for proper initialization.
PLL1, PLL2
(PGA packages
only)
I
All Intel Celeron processors have internal analog PLL clock generators that require
quiet power supplies. PLL1 and PLL2 are inputs to the internal PLL and should be
connected to V
CCCORE
through a low-pass filter that minimizes jitter. See the
platform design guide for implementation details.
PRDY#
O
The PRDY (Probe Ready) signal is a processor output used by debug tools to
determine processor debug readiness.
PREQ#
I
The PREQ# (Probe Request) signal is used by debug tools to request debug
operation of the processors.
PWRGOOD
I
The PWRGOOD (Power Good) signal is a 2.5 V tolerant processor input. The
processor requires this signal to be a clean indication that the clocks and power
supplies (V
CCCORE
, etc.) are stable and within their specifications. Clean implies
that the signal will remain low (capable of sinking leakage current), without glitches,
from the time that the power supplies are turned on until they come within
specification. The signal must then transition monotonically to a high (2.5 V) state.
Figure 39
illustrates the relationship of PWRGOOD to other system signals.
PWRGOOD can be driven inactive at any time, but clocks and power must again be
stable before a subsequent rising edge of PWRGOOD. It must also meet the
minimum pulse width specification in
Table 16
and
Table 17
, and be followed by a
1 ms RESET# pulse.
The PWRGOOD signal must be supplied to the processor; it is used to protect
internal circuits against voltage sequencing issues. It should be driven high
throughout boundary scan operation.
PWRGOOD Relationship at Power-On
REQ[4:0]#
I/O
The REQ[4:0]# (Request Command) signals must connect the appropriate pins of
all processor system bus agents. They are asserted by the current bus owner over
two clock cycles to define the currently active transaction type.
Table 54. Alphabetical Signal Reference (Sheet 4 of 7)
Signal
Type
Description
BCLK
PWRGOOD
RESET#
1 ms
VCC
CORE
,
REF
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