參數(shù)資料
型號： MPC8250ACZQIHBB
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 200 MHz, RISC PROCESSOR, PBGA516
封裝： 27 X 27 MM, 1.25 MM HEIGHT, 1 MM PITCH, PLASTIC, BGA-516
文件頁數(shù)： 11/73頁
文件大小： 885K
代理商： MPC8250ACZQIHBB
MOTOROLA
MPC8250 Hardware Specications
19
Clock Conguration Modes
1.3
Clock Conguration Modes
The MPC8250 has three clocking modes: local, PCI host, and PCI agent. The clocking mode is set according
to three input pins—PCI_MODE, PCI_CFG[0], PCI_MODCK—as shown in Table 12.
In each clocking mode, the conguration of bus, core, PCI, and CPM frequencies is determined by seven
bits during the power-up reset—three hardware conguration pins (MODCK[1–3]) and four bits from
hardware conguration word[28–31] (MODCK_H). Both the PLLs and the dividers are set according to the
selected MPC8250 clock operation mode as described in the following sections.
NOTE
Clock congurations change only after POR is asserted.
1.3.1
Local Bus Mode
Table 13 shows the eight basic clock congurations for the MPC8250. Another 49 congurations are
available by using the conguration pin (RSTCONF) and driving four pins on the data bus.
Table 14 describes all possible clock congurations when using the hard reset conguration sequence.
Note also that basic modes are shown in boldface type. The frequencies listed are for the purpose of
illustration only. Users must select a mode and input bus frequency so that the resulting conguration does
not exceed the frequency rating of the user’s device.
Table 12. MPC8250 Clocking Modes
Pins
Clocking Mode
PCI Clock
Frequency Range
(MHZ)
Reference
PCI_MODE
PCI_CFG[0] PCI_MODCK1
1 Determines PCI clock frequency range. Refer to Section 1.3.2, “PCI Mode.”
1
—
Local bus
—
00
0
PCI host
50–66
0
1
25–50
01
0
PCI agent
50–66
0
1
25–50
Table 13. Clock Default Congurations
MODCK[1–3]
Input Clock
Frequency
CPM Multiplication
Factor
CPM
Frequency
Core Multiplication
Factor
Core
Frequency
000
33 MHz
3
100 MHz
4
133 MHz
001
33 MHz
3
100 MHz
5
166 MHz
010
33 MHz
4
133 MHz
4
133 MHz
011
33 MHz
4
133 MHz
5
166 MHz
100
66 MHz
2
133 MHz
2.5
166 MHz
101
66 MHz
2
133 MHz
3
200 MHz
110
66 MHz
2.5
166 MHz
2.5
166 MHz
111
66 MHz
2.5
166 MHz
3
200 MHz
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC8250ACZQIHBC 功能描述:微處理器 - MPU PWR QUICC II HIP4BZQ 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 最大時鐘頻率:536 MHz 程序存儲器大小: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC8250ACZUMHBC 功能描述:微處理器 - MPU POWER QUICC II HIP4C 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 最大時鐘頻率:536 MHz 程序存儲器大小: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC8250ACZUMHBC 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MPU 266MHZ 480-TBGA
MPC8250AVRIHBC 功能描述:微處理器 - MPU PWR QUICC II HIP4CVR 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 最大時鐘頻率:536 MHz 程序存儲器大小: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC8250AVVMHBC 功能描述:微處理器 - MPU PQ 2 HIP4 REV-C NO-PB 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 最大時鐘頻率:536 MHz 程序存儲器大小: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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
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