參數(shù)資料
型號(hào)： BX80562X3230SLACS
廠商： INTEL CORP
元件分類： 微控制器/微處理器
英文描述： 64-BIT, 266 MHz, MICROPROCESSOR, PBGA775
封裝： LGA-775
文件頁(yè)數(shù)： 21/96頁(yè)
文件大?。?/td> 1398K
代理商： BX80562X3230SLACS
Electrical Specifications
28
Quad-Core Intel Xeon Processor 3200 Series Datasheet
2.6.3.1
GTL+ Front Side Bus Specifications
In most cases, termination resistors are not required as these are integrated into the
processor silicon. See Table 2-7 for details on which GTL+ signals do not include on-die
termination.
Valid high and low levels are determined by the input buffers by comparing with a
reference voltage called GTLREF. Table 2-13 lists the GTLREF specifications. The GTL+
reference voltage (GTLREF) should be generated on the system board using high
precision voltage divider circuits.
2.7
Clock Specifications
2.7.1
Front Side Bus Clock (BCLK[1:0]) and Processor Clocking
BCLK[1:0] directly controls the FSB interface speed as well as the core frequency of the
processor. As in previous generation processors, the processor’s core frequency is a
multiple of the BCLK[1:0] frequency. The processor bus ratio multiplier will be set at its
default ratio during manufacturing.
The processor uses a differential clocking implementation. For more information on the
processor clocking, contact your Intel field representative.
Table 2-13. GTL+ Bus Voltage Definitions
Symbol
Parameter
Min
Typ
Max
Units
Notes1
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
GTLREF_PU
GTLREF pull-up resistor
124 * 0.99
124
124 * 1.01
Ω
2
2.
GTLREF is to be generated from VTT by a voltage divider of 1% resistors (one divider for each
GTLEREF land). Refer to the applicable platform design guide.
GTLREF_PD
GTLREF pull-down resistor
210 * 0.99
210
210 * 1.01
Ω
RTT
Termination Resistance
45
50
55
Ω
3
3. RTT is the on-die termination resistance measured at VTT/3 of the GTL+ output driver.
COMP[3:0]
COMP Resistance
49.40
49.90
50.40
Ω
4
4. COMP resistance must be provided on the system board with 1% resistors. COMP[3:0] and
COMP8 resistors are to VSS.
COMP8
COMP Resistance
24.65
24.90
25.15
Ω
Table 2-14. Core Frequency to FSB Multiplier Configuration
Multiplication of System Core
Frequency to FSB Frequency
Core Frequency
(266 MHz BCLK/1066 MHz FSB)
Notes1, 2
Notes:
1.
Individual processors operate only at or below the rated frequency.
2.
Listed frequencies are not necessarily committed production frequencies.
1/6
1.60 GHz
-
1/7
1.87 GHz
-
1/8
2.13 GHz
-
1/9
2.40 GHz
-
1/10
2.66 GHz
-
1/11
2.93 GHz
-
1/12
3.20 GHz
-
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