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| 型号： | MPC8323E-RDB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 63/82页 |
| 文件大小： | 0K |
| 描述： | BOARD REFERENCE DESIGN |
| 产品培训模块： | MPC8323E PowerQUICC II Pro Processor |
| 标准包装： | 1 |
| 系列： | PowerQUICC II™ PRO |
| 类型： | MCU |
| 适用于相关产品： | MPC8323E |
| 所含物品： | 参考设计板、软件和说明文档 |
| 相关产品： | MPC8323CVRADDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323CVRAFDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323CZQADDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323CZQAFDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323ECVRAFDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323ECVRADDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323ZQAFDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323ZQADDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323VRADDC-ND - IC MPU PWRQUICC II 516-PBGA MPC8323EZQAFDC-ND - IC MPU POWERQUICC II 516-PBGA 更多... |
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MPC8323E PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 4
66
Freescale Semiconductor
Clocking
The ce_clk frequency is determined by the QUICC Engine PLL multiplication factor (RCWL[CEPMF)
and the QUICC Engine PLL division factor (RCWL[CEPDF]) according to the following equation:
When CLKIN is the primary input clock,
ce_clk = (primary clock input × CEPMF)
÷ (1 + CEPDF)
When PCI_CLK is the primary input clock,
ce_clk = [primary clock input × CEPMF × (1 + ~CFG_CLKIN_DIV)] ÷ (1 + CEPDF)
See the “QUICC Engine PLL Multiplication Factor” section and the “QUICC Engine PLL Division
Factor” section in the MPC8323E PowerQUICC II Pro Communications Processor Reference Manual for
more information.
The DDR SDRAM memory controller operates with a frequency equal to twice the frequency of csb_clk.
Note that ddr_clk is not the external memory bus frequency; ddr_clk passes through the DDR clock divider
(
÷2) to create the differential DDR memory bus clock outputs (MCK and MCK). However, the data rate
is the same frequency as ddr_clk.
The local bus memory controller operates with a frequency equal to the frequency of csb_clk. Note that
lbc_clk is not the external local bus frequency; lbc_clk passes through the LBC clock divider to create the
external local bus clock outputs (LSYNC_OUT and LCLK[0:2]). The LBC clock divider ratio is
controlled by LCRR[CLKDIV]. See the “LBC Bus Clock and Clock Ratios” section in the MPC8323E
PowerQUICC II Pro Communications Processor Reference Manual for more information.
In addition, some of the internal units may be required to be shut off or operate at lower frequency than
the csb_clk frequency. These units have a default clock ratio that can be configured by a memory mapped
register after the device comes out of reset. Table 56 specifies which units have a configurable clock
frequency. Refer to the “System Clock Control Register (SCCR)” section in the MPC8323E PowerQUICC
II Pro Communications Processor Reference Manual for a detailed description.
NOTE
Setting the clock ratio of these units must be performed prior to any access
to them.
Table 57 provides the operating frequencies for the 8323E PBGA under recommended operating
conditions (see Table 2).
Table 56. Configurable Clock Units
Unit
Default Frequency
Options
Security core, I2C, SAP, TPR
csb_clk
Off,
csb_clk/2, csb_clk/3
PCI and DMA complex
csb_clk
Off,
csb_clk
Table 57. Operating Frequencies for PBGA
Characteristic1
Max Operating Frequency
Unit
e300 core frequency (
core_clk)333
MHz
Coherent system bus frequency (
csb_clk)133
MHz
QUICC Engine frequency (
ce_clk)200
MHz
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC8323E-RDB | 制造商:Freescale Semiconductor 功能描述:MPC8323E Integrated Multiservice Gateway |
| MPC8323EVRADDC | 功能描述:微处理器 - MPU 8323 NOPB PBGA W/ENC RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MPC8323EVRADDCA | 制造商:Freescale Semiconductor 功能描述:POWERQUICC, 32 BIT POWER ARCHITECTURE SOC, 266MHZ E300, QE, - Trays 制造商:Freescale Semiconductor 功能描述:IC MPU PWRQUICC 266MHZ 516BGA |
| MPC8323EVRAFDC | 功能描述:微处理器 - MPU 8323 NOPB PBGA W/ENC RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MPC8323EVRAFDCA | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Integrated Communications Processor Family Hardware Specifications |
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