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参数资料
型号： MPC8314VRAGDA
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： MICROPROCESSOR, PBGA620
封装： 29 X 29 MM, LEAD FREE, PLASTIC, TEPBGA-620
文件页数： 70/106页
文件大小： 1253K
代理商： MPC8314VRAGDA
MPC8314E PowerQUICC II Pro Processor Hardware Specifications, Rev. 0
66
Freescale Semiconductor
PCI Express
Maximum time between
the jitter median and
maximum deviation from
the median.
TRX-EYE-MEDIAN-to-MAX
-JITTER
Jitter is defined as the
measurement variation of the
crossing points (VRX-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.
—
0.3
UI
2, 3, 7
AC peak common mode
input voltage
VRX-CM-ACp
VRX-CM-ACp = |VRXD+ +
VRXD-|/2 - VRX-CM-DC
VRX-CM-DC = DC(avg) of
|VRX-D+ + VRX-D-|/2
——
150
mV
2
Differential return loss
RLRX-DIFF
Measured over 50 MHz to
1.25 GHz with the D+ and D-
lines biased at +300 mV and
-300 mV, respectively.
15
—
dB
4
Common mode return
loss
RLRX-CM
Measured over 50 MHz to
1.25 GHz with the D+ and D-
lines biased at 0 V.
6—
—
dB
4
DC differential input
impedance
ZRX-DIFF-DC
RX DC differential mode
impedance.
80
100
120
Ω
5
DC Input Impedance
ZRX-DC
Required RX D+ as well as D-
DC Impedance (50 ± 20%
tolerance).
40
50
60
Ω
2, 5
Powered down DC input
impedance
ZRX-HIGH-IMP-DC
Required RX D+ as well as D-
DC Impedance when the
Receiver terminations do not
have power.
200 k
—
Ω
6
Electrical idle detect
threshold
VRX-IDLE-DET-DIFFp-p VPEEIDT = 2*|VRX-D+ -VRX-D-|
Measured at the package pins
of the Receiver
65
—
175
mV
—
Unexpected Electrical Idle
Enter Detect Threshold
Integration Time
TRX-IDLE-DET-DIFF-
ENTERTIME
An unexpected Electrical Idle
(Vrx-diffp-p <
Vrx-idle-det-diffp-p) must be
recognized no longer than
Trx-idle-det-diff-entertime to
signal an unexpected idle
condition.
——
10
ms
—
Table 55. Differential Receiver (RX) Input Specifications (continued)
Parameter
Symbol
Comments
Min
Typical
Max
Units
Notes
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