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參數資料
| 型號： | MPC8272CVRPIEA |
| 廠商： | Freescale Semiconductor |
| 文件頁數： | 20/61頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MPU POWERQUICC II 516-PBGA |
| 標準包裝： | 40 |
| 系列： | MPC82xx |
| 處理器類型： | 32-位 MPC82xx PowerQUICC II |
| 速度： | 300MHz |
| 電壓： | 1.5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 516-BBGA |
| 供應商設備封裝： | 516-FPBGA（27x27） |
| 包裝： | 托盤 |
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MPC8272 PowerQUICC II Family Hardware Specifications, Rev. 3
Freescale Semiconductor
27
Clock Configuration Modes
7
Clock Configuration Modes
As shown in this table, the clocking mode is set according to two sources:
PCI_CFG[0]— An input signal. Also defined as “PCI_HOST_EN.” See Chapter 6, “External
Signals,” and Chapter 9, “PCI Bridge,” in the SoC reference manual.
PCI_MODCK—Bit 27 in the Hard Reset Configuration Word. See Chapter 5, “Reset,” in the SoC
reference manual.
Within each mode, the configuration of bus, core, PCI, and CPM frequencies is determined by seven bits
during the power-on reset—three hardware configuration pins (MODCK[1–3]) and four bits from
hardware configuration word[28–31] (MODCK_H). Both the PLLs and the dividers are set according to
the selected clock operation mode as described in the following sections.
NOTE
Clock configurations change only after PORESET is asserted.
NOTE: Tval (Output Hold)
The minimum Tval = 2 ns when PCI_MODCK = 1, and the minimum
Tval = 1 ns when PCI_MODCK = 0. Therefore, designers should use clock
configurations that fit this condition to achieve PCI-compliant AC timing.
7.1
PCI Host Mode
These tables show configurations for PCI host mode. The frequency values listed are for the purpose of
illustration only. Users must select a mode and input bus frequency so that the resulting configuration does
not exceed the frequency rating of the user’s device. Note that in PCI host mode the input clock is the bus
clock.
Table 16. SoC Clocking Modes
Pins
Clocking Mode
PCI Clock Frequency Range (MHz)
Reference
PCI_CFG[0]1
1 PCI_HOST_EN
PCI_MODCK2
2 Determines PCI clock frequency range.
0
PCI host
50–66
0
1
25–50
1
0
PCI agent
50–66
1
25–50
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| MPC8272CVRT | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications |
| MPC8272CVRTIEA | 功能描述:微處理器 - MPU 400 MHz 760 MIPS RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數據總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數據 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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MPC8272CZQ | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MPC8272 PowerQUICC II Family Hardware Specifications |
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| MPC8272CZQE | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MPC8272 PowerQUICC II Family Hardware Specifications |
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