- 您现在的位置：买卖IC网 > PDF目录298892 > BX80525U550512E (INTEL CORP) 32-BIT, 550 MHz, MICROPROCESSOR, XMA PDF资料下载
参数资料
| 型号： | BX80525U550512E |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 550 MHz, MICROPROCESSOR, XMA |
| 文件页数： | 10/94页 |
| 文件大小： | 898K |
| 代理商： | BX80525U550512E |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页
Pentium
III Processor at 450 MHz, 500 MHz, 533B MHz, 550 MHz, 600/600B MHz
18
Datasheet
Note that the ‘11111’ (all opens) ID can be used to detect the absence of a processor core in a given
connector as long as the power supply used does not affect these lines. Detection logic and pull-ups
should not affect VID inputs at the power source (see Section 7.0).
The VID pins should be pulled up to a TTL-compatible level with external resistors to the power
source of the regulator only if required by the regulator or external logic monitoring the VID[4:0]
signals. The power source chosen must be guaranteed to be stable whenever the supply to the
voltage regulator is stable. This will prevent the possibility of the processor supply going above the
specified VCC
CORE in the event of a failure in the supply for the VID lines. In the case of a DC-to-DC
converter, this can be accomplished by using the input voltage to the converter for the VID line
pull-ups. A resistor of greater than or equal to 10 k
may be used to connect the VID signals to the
converter input. Note that no changes have been made to the physical connector between the
Intel-enabled VRM 8.1 and VRM 8.2 specifications, though pin definitions have changed.
2.7
Processor System Bus Unused Pins
All RESERVED pins must remain unconnected. Connection of these pins to VCC
CORE, VCCL2, VSS, or
to any other signal (including each other) can result in component malfunction or incompatibility
with future Pentium III processors. See Section 5.5 for a pin listing of the processor and the location
of each RESERVED pin.
All TESTHI pins must be connected to 2.5 V via 1-100 k
pull-up resistor.
PICCLK must be driven with a valid clock input and the PICD[1:0] lines must be pulled-up to
2.5 V even when the APIC will not be used. A separate pull-up resistor must be provided for each
APIC data line.
For reliable operation, always connect unused inputs or bidirectional signals to an appropriate
signal level. Unused AGTL+ inputs should be left as no connects; AGTL+ termination is provided
on the processor. Unused active low CMOS inputs should be connected through a resistor to 2.5 V.
Unused active high inputs should be connected through a resistor to ground (V
SS). Unused outputs
can be left unconnected. A resistor must be used when tying bidirectional signals to power or
ground. When tying any signal to power or ground, a resistor will also allow for system testability.
For unused pins, it is suggested that ~10 k
resistors be used for pull-ups (except for PICD[1:0]
discussed above), and ~1 k
resistors be used as pull-downs.
2.8
Processor System Bus Signal Groups
In order to simplify the following discussion, the Pentium III processor system bus signals have
been combined into groups by buffer type. All Pentium III processor system bus outputs are open
drain and require a high-level source provided externally by the termination or pull-up resistor.
However, the Pentium III processor includes on cartridge termination.
AGTL+ input signals have differential input buffers, which use VREF as a reference signal. AGTL+
output signals require termination to 1.5 V. In this document, the term “AGTL+ Input” refers to the
AGTL+ input group as well as the AGTL+ I/O group when receiving. Similarly, “AGTL+ Output”
refers to the AGTL+ output group as well as the AGTL+ I/O group when driving.
EMI pins may be connected to baseboard ground and/or to chassis ground through zero ohm (0
)
resistors. The 0
resistors should be placed in close proximity to the SC242 connector. The path to
chassis ground should be short in length and have a low impedance.
相关PDF资料 |
PDF描述 |
|---|---|
| BX80525U450512E | 32-BIT, 450 MHz, MICROPROCESSOR, XMA |
| BX80526F500256E | 32-BIT, 500 MHz, MICROPROCESSOR, PPGA370 |
| BX80526F650256E | 32-BIT, 650 MHz, MICROPROCESSOR, PPGA370 |
| BX80526F750256E | 32-BIT, 750 MHz, MICROPROCESSOR, PPGA370 |
| BX80526F850256E | 32-BIT, 850 MHz, MICROPROCESSOR, PPGA370 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| BX80525U600256E | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microprocessor |
| BX80525U600256EB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microprocessor |
| BX80525U650256 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microprocessor |
| BX80525U667256 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microprocessor |
| BX80525U700256 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Microprocessor |
发布紧急采购，3分钟左右您将得到回复。