參數(shù)資料
型號: BX80557E2140
廠商: INTEL CORP
元件分類: 微控制器/微處理器
英文描述: MICROPROCESSOR, PBGA775
封裝: LGA-775
文件頁數(shù): 28/107頁
文件大?。?/td> 1474K
代理商: BX80557E2140
Datasheet
27
Electrical Specifications
Table 14.
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 on
Intel 975X and 96x Express
Chipset family boards
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).
GTLREF_PD
GTLREF pull down resistor
on Intel 975X and 96x
Express Chipset family
boards
210 * 0.99
210
210 * 1.01
Ω
GTLREF_PU
GTLREF pull up resistor on
Intel Series 3 Express
Chipset family boards
100 * 0.99
100
100 * 1.01
Ω
GTLREF_PD
GTLREF pull down resistor
on Intel Series 3 Express
Chipset family boards
200 * 0.99
200
200 * 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
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