參數(shù)資料
型號(hào)： MPC8378CVRANDA
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 266 MHz, MICROPROCESSOR, PBGA689
封裝： 31 X 31 MM, 2.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-689
文件頁數(shù)： 95/125頁
文件大?。?/td> 894K
代理商： MPC8378CVRANDA
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
71
Maximum time between
the jitter median and
maximum deviation from
the median.
Jitter is defined as the
measurement variation of the
crossing points (VPEDPPRX = 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.
TRX-EYE-MEDIAN-to
-MAX-JITTER
——
0.3
UI
2, 3, 7
AC peak common mode
input voltage
VPEACPCMRX = |VRXD+ –
VRXD-|/2 – VRX-CM-DC
VRX-CM-DC = DC(avg) of |VRX-D+
– VRX-D-|/2
VRX-CM-ACp
—
150
mV
2
Differential return loss
Measured over 50 MHz to 1.25
GHz with the D+ and D– lines
biased at +300 mV and –300
mV, respectively.
RLRX-DIFF
10
—
dB
4
Common mode return
loss
Measured over 50 MHz to 1.25
GHz with the D+ and D– lines
biased at 0 V.
RLRX-CM
6—
—
dB
4
DC differential input
impedance
RX DC differential mode
impedance.
ZRX-DIFF-DC
80
100
120
5
DC Input Impedance
Required RX D+ as well as D-
DC impedance (50 ± 20%
tolerance).
ZRX-DC
40
50
60
2, 5
Powered down DC input
impedance
Required RX D+ as well as D–
DC impedance when the
receiver terminations do not
have power.
ZRX-HIGH-IMP-DC
200 k
—
6
Electrical idle detect
threshold
VPEEIDT = 2 |VRX-D+ -VRX-D-|
Measured at the package pins
of the receiver
VRX-IDLE-DET-DIFF
p-p
65
—
175
mV
—
Unexpected Electrical Idle
Enter Detect Threshold
Integration Time
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.
TRX-IDLE-DET-DIFF-
ENTERTIME
——
10
ms
—
Table 58. Differential Receiver (Rx) Input Specifications (continued)
Parameter
Comments
Symbol
Min
Typical
Max
Units
Note
相關(guān)PDF資料
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參數(shù)描述
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