參數(shù)資料
型號(hào)： MPC8308CZQAGD
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 266 MHz, MICROPROCESSOR, PBGA473
封裝： 19 X 19 MM, 0.80 MM PITCH, 1.39 MM HEIGHT, MAPBGA-473
文件頁(yè)數(shù)： 28/88頁(yè)
文件大小： 2550K
代理商： MPC8308CZQAGD
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 1
34
Freescale Semiconductor
PCI Express
10.2.4.1
Spread Spectrum Clock
SD_REF_CLK/SD_REF_CLK are not intended to be used with, and should not be clocked by, a spread
spectrum clock source.
10.3
SerDes Transmitter and Receiver Reference Circuits
Figure 26 shows the reference circuits for SerDes data lane’s transmitter and receiver.
Figure 26. SerDes Transmitter and Receiver Reference Circuits
The DC and AC specification of SerDes data lanes are defined in Section 11, “PCI Express.”
Note that external AC-coupling capacitor is required for the PCI Express serial transmission protocol with
the capacitor value defined in specification of PCI Express protocol section.
11 PCI Express
This section describes the DC and AC electrical specifications for the PCI Express bus.
11.1
DC Requirements for PCI Express SD_REF_CLK and
SD_REF_CLK
For more information, see Section 10.2, “SerDes Reference Clocks.”
11.2
AC Requirements for PCI Express SerDes Clocks
Table 33 lists the PCI Express SerDes clock AC requirements.
Table 33. SD_REF_CLK and SD_REF_CLK AC Requirements
Symbol
Parameter Description
Min
Typ
Max
Units
Notes
tREF
REFCLK cycle time (for 125 MHz and 100 MHz)
8
10
—
ns
—
tREFCJ
REFCLK cycle-to-cycle jitter. Difference in the period
of any two adjacent REFCLK cycles.
——
100
ps
—
tREFPJ
Phase jitter. Deviation in edge location with respect to
mean edge location.
–50
—
50
ps
—
50
Ω
50
Ω
Receiver
Transmitter
TX
n
TX
n
RX
n
RX
n
50
Ω
50
Ω
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC8308CZQAGDA 功能描述:微處理器 - MPU E300 EXT TEMP PB 400 RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC8308-KIT 功能描述:開發(fā)板和工具包 - 其他處理器 For MPC8308 Ethernet USB I2C SPI RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓:
MPC8308-NSG 功能描述:開發(fā)板和工具包 - 其他處理器 MPC8308-NSG RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓:
MPC8308-NSG 制造商:Freescale Semiconductor 功能描述:MPC8308-NSG*NIC*
MPC8308-RDB 功能描述:開發(fā)板和工具包 - 其他處理器 Refer. Board MPC8308 RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓:
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