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)： 26/88頁(yè)
文件大小： 2550K
代理商： MPC8308CZQAGD
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 1
32
Freescale Semiconductor
High-Speed Serial Interfaces (HSSI)
Figure 23 shows the SerDes reference clock connection reference circuits for a single-ended clock driver.
It assumes the DC levels of the clock driver are compatible with the device’s SerDes reference clock
input’s DC requirement.
Figure 23. Single-Ended Connection (Reference Only)
10.2.4
AC Requirements for SerDes Reference Clocks
The clock driver selected should provide a high-quality reference clock with low-phase noise and
cycle-to-cycle jitter. Phase noise less than 100 kHz can be tracked by the PLL and data recovery loops, and
is less of a problem. Phase noise above 15 MHz is filtered by the PLL. The most problematic phase noise
occurs in the 1–15 MHz range. The source impedance of the clock driver should be 50
Ω to match the
transmission line and reduce reflections which are a source of noise to the system.
Table 32 describes some AC parameters for PCI Express protocol.
Table 32. SerDes Reference Clock AC Parameters
At recommended operating conditions with XCOREVDD= 1.0V ± 5%
Parameter
Symbol
Min
Max
Unit
Notes
Rising Edge Rate
Rise Edge Rate
1.0
4.0
V/ns
2, 3
Falling Edge Rate
Fall Edge Rate
1.0
4.0
V/ns
2, 3
Differential Input High Voltage
VIH
+200
—
mV
2
Differential Input Low Voltage
VIL
—
–200
mV
2
50
Ω
50
Ω
SD_REF_CLK
100
Ω differential PWB trace
SerDes Refer.
CLK Receiver
Clock Driver
CLK_Out
Single-Ended
CLK Driver Chip
MPC8308
33
Ω
Total 50
Ω. Assume clock driver’s
output impedance is about 16
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(kāi)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(kāi)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(kāi)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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