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参数资料
型号： MPC8548EPXAQGB
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： 32-BIT, 1000 MHz, MICROPROCESSOR, PBGA783
封装： 29 X 29 MM, 1 MM PITCH, PLASTIC, BGA-783
文件页数： 112/143页
文件大小： 1460K
代理商： MPC8548EPXAQGB
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 8
70
Freescale Semiconductor
PCI Express
17.3
Clocking Dependencies
The ports on the two ends of a link must transmit data at a rate that is within 600 parts per million (ppm)
of each other at all times. This is specified to allow bit rate clock sources with a ±300 ppm tolerance.
17.4
Physical Layer Specifications
The following is a summary of the specifications for the physical layer of PCI Express on this device. For
further details as well as the specifications of the transport and data link layer refer to PCI Express Base
Specification. Rev. 1.0a.
17.4.1
Differential Transmitter (TX) Output
Table 56 defines the specifications for the differential output at all transmitters (TXs). The parameters are
specified at the component pins.
Table 56. Differential Transmitter (TX) Output Specifications
Symbol
Parameter
Min
Nom
Max
Unit
Comments
UI
Unit interval
399.88
400
400.12
ps
Each UI is 400 ps ± 300 ppm. UI does not account
for spread spectrum clock dictated variations.
See Note 1.
VTX-DIFFp-p
Differential
peak-to-peak
output voltage
0.8
—
1.2
V
VTX-DIFFp-p = 2 × |VTX-D+ – VTX-D–|. See Note 2.
VTX-DE-RATIO
De- emphasized
differential
output voltage
(ratio)
–3.0
–3.5
–4.0
dB
Ratio of the VTX-DIFFp-p of the second and
following bits after a transition divided by the
VTX-DIFFp-p of the first bit after a transition.
See Note 2.
TTX-EYE
Minimum TX eye
width
0.70
—
UI
The maximum transmitter jitter can be derived as
TTX-MAX-JITTER = 1 – TTX-EYE = 0.3 UI.
See Notes 2 and 3.
TTX-EYE-MEDIAN-to-
MAX-JITTER
Maximum time
between the
jitter median and
maximum
deviation from
the median.
—
0.15
UI
Jitter is defined as the measurement variation of
the crossing points (VTX-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.
See Notes 2 and 3.
TTX-RISE, TTX-FALL
D+/D– TX output
rise/fall time
0.125
—
UI
See Notes 2 and 5.
VTX-CM-ACp
RMS AC peak
common mode
output voltage
——
20
mV
VTX-CM-ACp = RMS(|VTXD+ + VTXD–|/2 –
VTX-CM-DC)
VTX-CM-DC = DC(avg) of |VTX-D+ + VTX-D–|/2.
See Note 2.
相关PDF资料
PDF描述
MPC8548EPXAVHA 32-BIT, 1500 MHz, MICROPROCESSOR, PBGA783
MPC8548ECPXAUJA 32-BIT, 1333 MHz, MICROPROCESSOR, PBGA783
MPC8548ECHXATG 32-BIT, 1200 MHz, MICROPROCESSOR, CBGA783
MPC8548EHXAUJ 32-BIT, 1333 MHz, MICROPROCESSOR, CBGA783
MPC8548ECVUAQG 32-BIT, 1000 MHz, MICROPROCESSOR, CBGA783
相关代理商/技术参数
参数描述
MPC8548EPXAQGD 功能描述:微处理器 - MPU PQ38 PB ST WE 1000 R3.0 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
MPC8548EPXATGA 制造商:Freescale Semiconductor 功能描述:MPC85XX RISC 32-BIT CMOS 1.2GHZ 1.8V/2.5V/3.3V 783-PIN BGA T - Bulk
MPC8548EPXATGB 功能描述:微处理器 - MPU FG PQ38 8548 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
MPC8548EPXAUJA 制造商:Freescale Semiconductor 功能描述:MPC85XX RISC 32-BIT CMOS 1.333GHZ 1.8V/2.5V/3.3V 783-PIN BGA - Bulk
MPC8548EPXAUJB 功能描述:微处理器 - MPU FG PQ38 8548 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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