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参数资料
型号： MPC8377EVRAGDA
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： 32-BIT, 266 MHz, MICROPROCESSOR, PBGA689
封装： 31 X 31 MM, 2.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-689
文件页数： 82/124页
文件大小： 1462K
代理商： MPC8377EVRAGDA
MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
60
Freescale Semiconductor
PCI Express
15.4.1
Differential Transmitter (Tx) Output
Table 51 defines the specifications for the differential output at all transmitters. The parameters are
specified at the component pins.
Table 51. Differential Transmitter (Tx) Output Specifications
Parameter
Conditions
Symbol
Min
Typical
Max
Units
Notes
Unit interval
Each UPETX is 400 ps ± 300
ppm. UPETX does not account
for Spread Spectrum Clock
dictated variations.
UI
399.88
400
400.12
ps
1
Differential
peak-to-peak output
voltage
VPEDPPTX = 2 × |VTX-D+ –
VTX-D-|
VTX-DIFFp-p
0.8
—
1.2
V
2
De-emphasized
differential output
voltage (ratio)
Ratio of the VPEDPPTX of the
second and following bits after
a transition divided by the
VPEDPPTX of the first bit after a
transition.
VTX-DE-RATIO
–3.0
–3.5
–4.0
dB
2
Minimum Tx eye width
The maximum Transmitter
jitter can be derived as
TTX-MAX-JITTER = 1 –
UPEEWTX= 0.3 UI.
TTX-EYE
0.70
—
UI
2, 3
Maximum time between
the jitter median and
maximum deviation
from the median
Jitter is defined as the
measurement variation of the
crossing points (VPEDPPTX = 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.
TTX-EYE-MEDIAN-to-
MAX-JITTER
—
0.15
UI
2, 3
D+/D– Tx output
rise/fall time
—TTX-RISE, TTX-FALL
0.125
—
UI
2, 5
RMS AC peak common
mode output voltage
VPEACPCMTX = RMS(|VTXD+ –
VTXD-|/2 – VTX-CM-DC)
VTX-CM-DC = DC(avg) of
|VTX-D+ – VTX-D-|/2
VTX-CM-ACp
——
20
mV
2
Absolute delta of DC
common mode voltage
during LO and electrical
idle
|VTX-CM-DC (during LO) –
VTX-CM-Idle-DC (During Electrical
Idle)|<=100 mV
VTX-CM-DC = DC(avg) of
|VTX-D+ – VTX-D-|/2 [LO]
VTX-CM-Idle-DC = DC(avg) of
|VTX-D+ – VTX-D-|/2 [Electrical
Idle]
VTX-CM-DC- ACTIVE-
IDLE-DELTA
0—
100
mV
2
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相关代理商/技术参数
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MPC8377EVRAJFA 功能描述:微处理器 - MPU 8377 PBGA ST PbFr W/ENC RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324
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