參數(shù)資料
型號(hào)： MPC8323ECZQAFDC
廠商： Freescale Semiconductor
文件頁(yè)數(shù)： 62/82頁(yè)
文件大?。?/td> 0K
描述： IC MPU PWRQUICC II 516-PBGA
產(chǎn)品培訓(xùn)模塊： MPC8323E PowerQUICC II Pro Processor
標(biāo)準(zhǔn)包裝： 40
系列： MPC83xx
處理器類(lèi)型： 32-位 MPC83xx PowerQUICC II Pro
速度： 333MHz
電壓： 1V
安裝類(lèi)型： 表面貼裝
封裝/外殼： 516-BBGA
供應(yīng)商設(shè)備封裝： 516-FPBGA（27x27）
包裝： 托盤(pán)
配用： MPC8323E-RDB-ND - BOARD REFERENCE DESIGN
MPC8323E PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 4
Freescale Semiconductor
65
Clocking
22.1
Clocking in PCI Host Mode
When the MPC8323E is configured as a PCI host device (RCWH[PCIHOST] = 1), CLKIN is its primary
input clock. CLKIN feeds the PCI clock divider (
÷2) and the PCI_SYNC_OUT and PCI_CLK_OUT
multiplexors. The CFG_CLKIN_DIV configuration input selects whether CLKIN or CLKIN/2 is driven
out on the PCI_SYNC_OUT signal.
PCI_SYNC_OUT is connected externally to PCI_SYNC_IN to allow the internal clock subsystem to
synchronize to the system PCI clocks. PCI_SYNC_OUT must be connected properly to PCI_SYNC_IN,
with equal delay to all PCI agent devices in the system.
22.1.1
PCI Clock Outputs (PCI_CLK_OUT[0:2])
When the MPC8323E is configured as a PCI host, it provides three separate clock output signals,
PCI_CLK_OUT[0:2], for external PCI agents.
When the device comes out of reset, the PCI clock outputs are disabled and are actively driven to a steady
low state. Each of the individual clock outputs can be enabled (enable toggling of the clock) by setting its
corresponding OCCR[PCICOEn] bit. All output clocks are phase-aligned to each other.
22.2
Clocking in PCI Agent Mode
When the MPC8323E is configured as a PCI agent device, PCI_CLK is the primary input clock. In agent
mode, the CLKIN signal should be tied to GND, and the clock output signals, PCI_CLK_OUTn and
PCI_SYNC_OUT, are not used.
22.3
System Clock Domains
As shown in Figure 43, the primary clock input (frequency) is multiplied up by the system phase-locked
loop (PLL) and the clock unit to create three major clock domains:
The coherent system bus clock (csb_clk)
The QUICC Engine clock (ce_clk)
The internal clock for the DDR controller (ddr_clk)
The internal clock for the local bus controller (lb_clk)
The csb_clk frequency is derived from a complex set of factors that can be simplified into the following
equation:
csb_clk = [PCI_SYNC_IN × (1 + ~CFG_CLKIN_DIV)] × SPMF
In PCI host mode, PCI_SYNC_IN × (1 + ~CFG_CLKIN_DIV) is the CLKIN frequency.
The csb_clk serves as the clock input to the e300c2 core. A second PLL inside the core multiplies up the
csb_clk frequency to create the internal clock for the core (core_clk). The system and core PLL multipliers
are selected by the SPMF and COREPLL fields in the reset configuration word low (RCWL) which is
loaded at power-on reset or by one of the hard-coded reset options. See the “Reset Configuration” section
in the MPC8323E PowerQUICC II Pro Communications Processor Reference Manual for more
information.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC8323ECZQAFDCA 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Integrated Communications Processor Family Hardware Specifications
MPC8323EEC 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Integrated Communications Processor Family Hardware Specifications
MPC8323E-MDS-PB 功能描述:開(kāi)發(fā)板和工具包 - 其他處理器 MPC8323E PROCESSOR BOARD 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(lèi)型:I2C, SPI, USB 工作電源電壓:
MPC8323E-RDB 功能描述:開(kāi)發(fā)板和工具包 - 其他處理器 REFERENCE DESIGN PQII PR 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(lèi)型:I2C, SPI, USB 工作電源電壓:
MPC8323E-RDB 制造商:Freescale Semiconductor 功能描述:MPC8323E Integrated Multiservice Gateway
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