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參數(shù)資料
| 型號： | BXM80526B450256 |
| 廠商： | INTEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 64-BIT, 450 MHz, MICROPROCESSOR, CPGA495 |
| 封裝： | MICRO PGA-495 |
| 文件頁數(shù)： | 75/84頁 |
| 文件大?。?/td> | 450K |
| 代理商： | BXM80526B450256 |
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Mobile Pentium III Processor in BGA2 and Micro-PGA2 Packages Datasheet
Intel Corporation
69
THERMDA, THERMDC (Analog)
The THERMDA (Thermal Diode Anode) and THERMDC (Thermal Diode Cathode) signals
connect to the anode and cathode of the on-die thermal diode.
TMS (I - 1.5V Tolerant)
The TMS (Test Mode Select) signal is a JTAG support signal used by debug tools.
TRDY# (I - GTL+)
The TRDY# (Target Ready) signal is asserted by the target to indicate that the target is ready to
receive write or implicit write-back data transfer. TRDY# must be connected to the appropriate
pins/balls on both agents on the system bus.
TRST# (I - 1.5V Tolerant)
The TRST# (Test Reset) signal resets the Test Access Port (TAP) logic. The mobile Pentium III
processors do not self-reset during power on; therefore, it is necessary to drive this signal low
during power-on reset.
VID[4:0] (O – Open-drain)
The VID[4:0] (Voltage ID) pins/balls can be used to support automatic selection of power supply
voltages. These pins/balls are not signals, they are either an open circuit or a short to VSS on the
processor substrate. The combination of opens and shorts encodes the voltage required by the
processor. External to pull-ups are required to sense the encoded VID. For processors that have
Intel SpeedStep technology enabled, VID[4:0] encode the voltage required in the battery-
optimized mode. VID[4:0] are needed to cleanly support voltage specification changes on mobile
Pentium III processors. The voltage encoded by VID[4:0] is defined in Table 39. A “1” in this
table refers to an open pin/ball and a “0” refers to a short to VSS. The power supply must provide
the requested voltage or disable itself.
Please note that in order to implement VID on the BGA2 package, some VID[4:0] balls may be
depopulated. For the BGA2 package, a “1” in Table 39 implies that the corresponding VID ball is
depopulated, while a “0” implies that the corresponding VID ball is not depopulated.
But on the Micro-PGA2 package, VID[4:0] pins are not depopulated.
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