參數(shù)資料
型號(hào): MPC8315VRADDA
廠商: Freescale Semiconductor
文件頁數(shù): 69/106頁
文件大?。?/td> 0K
描述: MPU POWERQUICC II PRO 620-PBGA
標(biāo)準(zhǔn)包裝: 36
系列: MPC83xx
處理器類型: 32-位 MPC83xx PowerQUICC II Pro
速度: 266MHz
電壓: 1V
安裝類型: 表面貼裝
封裝/外殼: 620-BBGA 裸露焊盤
供應(yīng)商設(shè)備封裝: 620-PBGA(29x29)
包裝: 托盤
MPC8315E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
65
PCI Express
16.4.3
Differential Receiver (RX) Input Specifications
This table defines the specifications for the differential input at all receivers (RXs). The parameters are
specified at the component pins.
Table 55. Differential Receiver (RX) Input Specifications
Parameter
Symbol
Comments
Min
Typical
Max
Unit
Note
Unit interval
UI
Each UI is 400 ps ± 300 ppm. UI
does not account for Spread
Spectrum Clock dictated
variations.
399.88
400
400.12
ps
1
Differential peak-to-peak
output voltage
VRX-DIFFp-p
VRX-DIFFp-p = 2*|VRX-D+ - VRX-D-|
0.175
1.200
V
2
Minimum receiver eye width
TRX-EYE
The maximum interconnect
media and Transmitter jitter that
can be tolerated by the Receiver
can be derived as
TRX-MAX-JITTER = 1 - URX-EYE=
0.6 UI.
0.4
UI
2, 3
Maximum time between the
jitter median and maximum
deviation from the median.
TRX-EYE-MEDIAN-to-MAX-JI
TTER
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
5
DC Input Impedance
ZRX-DC
Required RX D+ as well as D-
DC Impedance (50 ± 20%
tolerance).
40
50
60
2, 5
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