參數(shù)資料
型號: Pentium III cpu with mobile
廠商: Intel Corp.
英文描述: Pentium III processor Mobile Module Connector 2 (MMC-2)(帶移動模塊連接器2奔III處理器)
中文描述: 奔騰III處理器的移動模塊連接器2(絲裂霉素2)(帶移動模塊連接器2奔三處理器)
文件頁數(shù): 19/64頁
文件大?。?/td> 773K
代理商: PENTIUM III CPU WITH MOBILE
Pentium
III Processor Mobile Module MMC-2
245304-003
Datasheet
13
3.1.7
Clock Signals
Table 7
provides descriptions of the clock signals.
Table 7. Clock Signal Descriptions
Name
Type
Voltage
Description
PCLK
I
PCI
V_3
PCI Clock In:
PCLK, an input to the mobile module, is one of the
system
s PCI clocks.
All of the 82443BX Host Bridge logic uses this
clock in the PCI clock domain.
This clock is stopped when the PIIX4E/
M PCI_STP# signal is asserted and/or during all suspend states.
HCLK0
I
CMOS
V_CLK
Host Clock In:
This clock is an input to the mobile module from the
CK100-M/CK100-SM clock source. The processor and the 82443BX
Host Bridge system controller use HCLK0. This clock is stopped when
the PIIX4E/M CPU_STP# signal is asserted and/or during all suspend
states.
Note
: HCLK0 and BCLK are used interchangeably.
HCLK1
I
CMOS
V_CLK
Host Clock In:
This clock is an input to the mobile module from the
CK100-M/CK100-SM clock source.
This signal is not implemented on the mobile module.
DCLK0
O
CMOS
V_3
SDRAM Clock Out:
A 66-MHz SDRAM clock reference generated
internally by the 82443BX Host Bridge system controller onboard PLL.
It feeds an external buffer that produces multiple copies for the SO-
DIMMs.
DCLKRD
I
CMOS
V_3
SDRAM Read Clock:
Feedback reference from the SDRAM clock
buffer. The 82443BX Host Bridge System Controller uses this clock
when reading data from the SDRAM array.
This signal is not implemented on the mobile module.
DCLKWR
I
CMOS
V_3
SDRAM Write Clock:
Feedback reference from the SDRAM clock
buffer. The 82443BX Host Bridge system controller uses this clock
when writing data to the SDRAM array.
GCLKIN
I
CMOS
V_3
AGP Clock In:
The GCLKIN input is a feedback reference from the
GCLKO signal.
GCLKO
O
CMOS
V_3
AGP Clock Out:
This signal is generated by the 82443BX Host
Bridge system controller onboard PLL from the HCLK0 host clock
reference. The frequency of GCLKO is 66 MHz. The GCLKO output is
used to feed both the PLL reference input pins on the 82443BX Host
Bridge system controller and the AGP device. The board layout must
maintain complete symmetry on loading and trace geometry to
minimize AGP clock skew.
FQS
O
CMOS
V_3S
Frequency Select:
This output indicates the desired host clock
frequency for the mobile module.
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