参数资料
型号: MPC8314EVRAGDA
厂商: Freescale Semiconductor
文件页数: 62/101页
文件大小: 0K
描述: MPU POWERQUICC II PRO 620-PBGA
标准包装: 36
系列: MPC83xx
处理器类型: 32-位 MPC83xx PowerQUICC II Pro
速度: 400MHz
电压: 1V
安装类型: 表面贴装
封装/外壳: 620-BBGA 裸露焊盘
供应商设备封装: 620-PBGA(29x29)
包装: 托盘
MPC8314E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
63
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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