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| 型號： | MC8641DVU1250HC |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 166.66 MHz, MICROPROCESSOR, CBGA1023 |
| 封裝： | 33 X 33 MM, ROHS COMPLIANT, CERAMIC, BGA-1023 |
| 文件頁數(shù)： | 100/130頁 |
| 文件大小： | 1493K |
| 代理商： | MC8641DVU1250HC |
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MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
71
PCI Express
TTX-EYE
Minimum TX Eye
Width
0.70
—
UI
The maximum Transmitter jitter can be derived as
TTX-MAX-JITTER = 1 – TTX-EYE= 0.3 UI.
See Notes 2 and 3.
TTX-EYE-MEDIAN-to-
MAX-JITTER
Maximum time
between the jitter
median and
maximum
deviation from
the median.
—
0.15
UI
Jitter is defined as the measurement variation of the
crossing points (VTX-DIFFp-p = 0 V) in relation to a
recovered TX UI. A recovered TX UI is calculated over
3500 consecutive unit intervals of sample data. Jitter
is measured using all edges of the 250 consecutive UI
in the center of the 3500 UI used for calculating the TX
UI. See Notes 2 and 3.
TTX-RISE, TTX-FALL
D+/D– TX Output
Rise/Fall Time
0.125
—
UI
See Notes 2 and 5
VTX-CM-ACp
RMS AC Peak
Common Mode
Output Voltage
——
20
mV
VTX-CM-ACp = RMS(|VTXD+ + VTXD-|/2 – VTX-CM-DC)
VTX-CM-DC = DC(avg) of |VTX-D+ + VTX-D-|/2
See Note 2
VTX-CM-DC-ACTIVE-
IDLE-DELTA
Absolute Delta of
DC Common
Mode Voltage
During L0 and
Electrical Idle
0
—
100
mV
|VTX-CM-DC (during L0) – VTX-CM-Idle-DC (During Electrical
Idle)|<=100 mV
VTX-CM-DC = DC(avg) of |VTX-D+ + VTX-D-|/2 [L0]
VTX-CM-Idle-DC = DC(avg) of |VTX-D+ + VTX-D-|/2
[Electrical Idle]
See Note 2.
VTX-CM-DC-LINE-DELTA Absolute Delta of
DC Common
Mode between
D+ and D–
0—
25
mV
|VTX-CM-DC-D+ – VTX-CM-DC-D-| <= 25 mV
VTX-CM-DC-D+ = DC(avg) of |VTX-D+|
VTX-CM-DC-D- = DC(avg) of |VTX-D-|
See Note 2.
VTX-IDLE-DIFFp
Electrical Idle
differential Peak
Output Voltage
0—
20
mV
VTX-IDLE-DIFFp = |VTX-IDLE-D+ –VTX-IDLE-D-| <= 20 mV
See Note 2.
VTX-RCV-DETECT
The amount of
voltage change
allowed during
Receiver
Detection
—
600
mV
The total amount of voltage change that a transmitter
can apply to sense whether a low impedance
Receiver is present. See Note 6.
VTX-DC-CM
The TX DC
Common Mode
Voltage
0
—
3.6
V
The allowed DC Common Mode voltage under any
conditions. See Note 6.
ITX-SHORT
TX Short Circuit
Current Limit
—
90
mA
The total current the Transmitter can provide when
shorted to its ground
TTX-IDLE-MIN
Minimum time
spent in
Electrical Idle
50
—
UI
Minimum time a Transmitter must be in Electrical Idle
Utilized by the Receiver to start looking for an
Electrical Idle Exit after successfully receiving an
Electrical Idle ordered set
Table 49. Differential Transmitter (TX) Output Specifications (continued)
Symbol
Parameter
Min
Nom
Max
Units
Comments
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| MC8641DVU1250J | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications |
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