参数资料
型号: MPC8535ECVTATH
厂商: Freescale Semiconductor
文件页数: 125/126页
文件大小: 0K
描述: MCU PWRQUICC II 1250MHZ 783-PBGA
标准包装: 1
系列: MPC85xx
处理器类型: 32-位 MPC85xx PowerQUICC III
速度: 1.25GHz
电压: 1V
安装类型: 表面贴装
封装/外壳: 783-BBGA,FCBGA
供应商设备封装: 783-FCPBGA(29x29)
包装: 托盘
MPC8535E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Electrical Characteristics
Freescale Semiconductor
98
Figure 67. Single-Ended Measurement Points for Rise and Fall Time Matching
The other detailed AC requirements of the SerDes Reference Clocks is defined by each interface protocol based on application
usage. See the following sections for detailed information:
2.20.2.4.1
Spread Spectrum Clock
SD1_REF_CLK/SD1_REF_CLK were designed to work with a spread spectrum clock (+0 to -0.5% spreading at 30–33 kHz
rate is allowed), assuming both ends have same reference clock. For better results, a source without significant unintended
modulation should be used.
SD2_REF_CLK/SD2_REF_CLK are not intended to be used with, and should not be clocked by, a spread spectrum clock
source.
2.20.3
SerDes Transmitter and Receiver Reference Circuits
This figure shows the reference circuits for SerDes data lane’s transmitter and receiver.
Figure 68. SerDes Transmitter and Receiver Reference Circuits
The DC and AC specification of SerDes data lanes are defined in each interface protocol section below (PCI Express, SATA or
SGMII) in this document based on the application usage:
Please note that external AC Coupling capacitor is required for the above three serial transmission protocols with the capacitor
value defined in specification of each protocol section.
SD
n_REF_CLK
SD
n_REF_CLK
SD
n_REF_CLK
SD
n_REF_CLK
SD
n_REF_CLK
VCROSS MEDIAN
VCROSS MEDIAN + 100 mV
VCROSS MEDIAN – 100 mV
TFALL
TRISE
50
Ω
50
Ω
Receiver
Transmitter
SD1_TXn or
SD2_TXn
SD1_TXn or
SD2_TXn
SD1_RXn or
SD2_RXn
SD1_RXn or
SD2_RXn
50
Ω
50
Ω
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