参数资料
型号: MPC8548EVTAQGB
厂商: Freescale Semiconductor
文件页数: 51/151页
文件大小: 0K
描述: IC MPU PWRQUICC III 783FCPBGA
产品培训模块: MPC8548 PowerQUICC III Processors
标准包装: 1
系列: MPC85xx
处理器类型: 32-位 MPC85xx PowerQUICC III
速度: 1.0GHz
电压: 1.1V
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
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 9
144
Freescale Semiconductor
System Design Information
SD_REF_CLK
NOTE
It is recommended to power down the unused lane through SRDSCR1[0:7]
register (offset = 0xE_0F08) (this prevents the oscillations and holds the
receiver output in a fixed state) that maps to SERDES lane 0 to lane 7
accordingly.
Pins V28 and M26 must be tied to XVDD. Pins V27 and M25 must be tied to GND through a 300-
resistor.
22.11 Guideline for PCI Interface Termination
PCI termination if PCI 1 or PCI 2 is not used at all.
Option 1
If PCI arbiter is enabled during POR:
All AD pins are driven to the stable states after POR. Therefore, all ADs pins can be floating.
All PCI control pins can be grouped together and tied to OVDD through a single 10-k resistor.
It is optional to disable PCI block through DEVDISR register after POR reset.
Option 2
If PCI arbiter is disabled during POR:
All AD pins are in the input state. Therefore, all ADs pins need to be grouped together and tied to
OVDD through a single (or multiple) 10-k resistor(s).
All PCI control pins can be grouped together and tied to OVDD through a single 10-k resistor.
It is optional to disable PCI block through DEVDISR register after POR reset.
22.12 Guideline for LBIU Termination
If the LBIU parity pins are not used, the following is the termination recommendation:
For LDP[0:3]—tie them to ground or the power supply rail via a 4.7-k
resistor.
For LPBSE—tie it to the power supply rail via a 4.7-k
resistor (pull-up resistor).
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