- 您现在的位置：买卖IC网 > PDF目录69321 > RB80526PZ667256 (INTEL CORP) 64-BIT, 667 MHz, MICROPROCESSOR, CPGA370 PDF资料下载
参数资料
| 型号： | RB80526PZ667256 |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 64-BIT, 667 MHz, MICROPROCESSOR, CPGA370 |
| 封装： | FCPGA-370 |
| 文件页数： | 13/74页 |
| 文件大小： | 502K |
| 代理商： | RB80526PZ667256 |
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页第10页第11页第12页当前第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
20
Datasheet
Pentium III Processor for the PGA370 Socket up to 750 MHz
2.8.2
System Bus Frequency Select Signals (BSEL[1:0])
These signals are used to select the system bus frequency. Table 2.9 defines the possible
combinations of the signals and the frequency associated with each combination. The frequency is
determined by the processor(s), chipset, and clock synthesizer. All system bus agents must operate
at the same frequency. The Pentium III processor for the PGA370 socket operates at 100 MHz
or 133 MHz system bus frequency; 66 MHz system bus operation is not supported. Individual
processors will only operate at their specified front side bus (FSB) frequency, either 100 MHz or
133 MHz, not both.
On motherboards that support operation at either 100 MHz or 133 MHz, the BSEL1 signal must be
pulled up to a logic high by a resistor located on the motherboard and provided as a frequency
selection signal to the clock driver/synthesizer. This signal can also be incorporated into RESET#
logic on the motherboard if only 133 MHz operation is supported (thus forcing the RESET# signal
to remain active as long as the BSEL1 signal is low.
The BSEL0 signal will float from the processor and should be pulled up to a logic high by a resistor
located on the motherboard. The BSEL0 signal can be incorporated into RESET# logic on the
motherboard if 66 MHz operation is unsupported, as demonstrated in Figure 5. Refer to the
appropriate clock synthesizer design guidelines and platform design guide for more details on the
bus frequency select signals.
NOTES:
1. Some clock drivers may require a series resistor on their BSEL1 input.
2. Some chipsets may connect to the BSEL[1:0] signals and require a series resistor. See the appropriate
platform design guide for implementation details.
Figure 5. BSEL[1:0] Example for a 100/133 MHz or 100 MHz Only System Design
Processor
BSEL0
BSEL1
Chipset
Clock Driver
1 K
1 K
3.3V
10 K
Note 1
10 K
Note 2
10 K
Note 2
Table 4.
Frequency Select Truth Table for BSEL[1:0]
BSEL1
BSEL0
Frequency
0
66 MHz (unsupported)
0
1
100 MHz
1
0
Reserved
1
133 MHz
相关PDF资料 |
PDF描述 |
|---|---|
| RB80526RY001128 | 32-BIT, 1000 MHz, MICROPROCESSOR, CPGA370 |
| RB80526RX766128 | 32-BIT, 766 MHz, MICROPROCESSOR, CPGA370 |
| RC5C317B | REAL TIME CLOCK, PDSO14 |
| RC7102 | 133.3 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| RC7108 | 150 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RB80526PZ733256 | 制造商:Rochester Electronics LLC 功能描述:PIII 733/133 256K ON DIE FC-PGA - Bulk |
| RB80526PZ733256S L4CG | 制造商:Intel 功能描述:MPU Pentium 制造商:Intel 功能描述:MPU Pentium? III Processor 0.18um 733MHz 370-Pin FCPGA |
| RB80526PZ733256S L4ZL | 制造商:Intel 功能描述:MPU Pentium 制造商:Intel 功能描述:MPU Pentium? III Processor 0.18um 733MHz 370-Pin FCPGA |
| RB80526PZ800256 | 制造商:Rochester Electronics LLC 功能描述:PIII 800/133 256K ON DIE FC-PGA - Bulk |
| RB80526PZ866256 | 制造商:Rochester Electronics LLC 功能描述:PIII 866/133 256K ON DIE FC-PGA - Bulk |
发布紧急采购，3分钟左右您将得到回复。